2013 Buyer's Guide & Directory

VOLUME 20 NUMBER 4 • QUARTER FOUR - 2012

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INMR

Issue 98 • Quarter 4 - 2012 • Volume 20 - Number 4

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2013 BUYER’S GUIDE & DIRECTORY

2013 BUYER’S GUIDE & DIRECTORY

INSULATORS • ARRESTERS • BUSHINGS • CABLE TERMINATIONS • FITTINGS • TEST EQUIPMENT • INSULATION MATERIALS • PRODUCTION MACHINERY

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TRUSTED INSULATORS

Xinjiang Xinneng TIANNING Electrical Engineering Isolating Materials Co., Ltd. No. 45, Taishan Road, Economic & Technical Development Zone Urumqi, Xinjiang, China 830026 Tel: ++86-991-2928153 路 Telefax: ++86-991-2928143 www.tenet-insulator.com路email: tenet_tn@163.com

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TRUSTED SUPPLIER

As one of China’s most respected and qualified insulator manufacturers, we understand that changing suppliers is not something to be done lightly.

That’s why we offer our new customers throughout the world the peace of mind that we have been supplying insulators to the highest voltage levels as well as highest quality standards for almost 20 years.

Our insulators have provided safe and reliable service on many of China’s most important lines, including critical UHV lines such as the Xiangjiaba-Shanghai ±800kV UHV DC Transmission Demonstration Project.

We have supplied as much as 80% of the new overhead network in Western China, including all the key lines for Xinjiang and Northwest Power Grid 750kV Interconnection Project.

Look into all the advantages we can offer at all voltages in terms of our unique solid state silastic manufacturing, timely delivery and reduced cost.

We hope you will agree that Tenet should be included among your preferred insulator suppliers.

A SUPPLIER OF INSULATORS YOU CAN TRUST. INMR Issue 98.indd 3

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Coming in the Q1, 2013 Issue of

INMR

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n an era when obtaining public approvals for new overhead line corridors is increasingly difficult, conventional past rules for designing towers no longer apply. It was accepting this reality that the transmission system operator in the Netherlands, TenneT – in cooperation with DNV Kema – recently embarked on an ambitious project to develop an entirely new tower, insulator and conductor arrangement that together would meet strict criteria of minimalism, high aesthetic appeal, much narrower corridor and, perhaps most important for a densely populated country, extremely low electromagnetic fields.

INMR meets line designers and takes you to see Wintrack – the bold resulting design due to be energized in March 2013 and that sets a high standard indeed for striking new lines befitting the 21st century.

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Coming in the Q1, 2013 Issue of

INMR

T

he fact that oil-impregnated paper technology continues to dominate most bushing applications does not imply that little is new when it comes to bushings. Quite the contrary.

Several years ago, few in the power transmission field could have predicted how rapidly voltage levels would rise in large power networks worldwide. Indeed the ongoing transition from EHV to 800 kV shows no signs of slowing but rather is picking up momentum.

With this change has come the need for bushings of substantial dimensions and designed to cope with all the related mechanical and electrical stresses, especially under DC. INMR visits HSP/Trench in Germany and reports on how one large bushings manufacturer is responding to such new demands.

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OR CO DER PY YO NO UR W

INMR’s Book, INSPIRING JOURNEY Designed to Inspire

T

wenty years spent traveling the world to visit all types of overhead lines and substations has done more than fill the pages of INMR with hundreds of interesting articles. Apart from observing how wide a range of possible designs and solutions exist for transmission and distribution networks, I’ve also been able to witness the diversity of human cultures and appreciate the natural beauty that is all around us.

To mark INMR’s 20th year in 2013, we are publishing a unique +330 page hardcover book showcasing our most outstanding photos of power lines and substations across many countries, combined with images of the fascinating people and places that surround them. It’s truly a treasure chest sure to interest and captivate anyone in the high voltage field.

And to top off each two-page photo spread, we’ve selected profound motivational and sometimes humorous quotations from some of history’s greatest thinkers.

Inspiring Journey: Ageless Wisdom, Beauty & Design is the result and INMR is proud to make this book available to power engineers and industry professionals across the globe.

To preview the book and to order your copy, please visit: www.inmr.com/inspiringjourney/ INMR Issue 98.indd 10

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in

2013

Each time a new year ‘rolls round’, there’s an opportunity to look at changes and improvements for the coming Volume, which in this case will be Vol. 21. The year 2013 marks our 20th anniversary and will also feature our 100th issue – a remarkable milestone since back in 1993 no one, myself included, imagined the fledgling new publication would have found its perfect niche.

There’s not much logic in tinkering greatly with a formula that has been demonstrated to work. So the format and style of INMR will continue as in the past, with practical technical articles that are useful and also easy to read since they are supported by numerous high quality photos. There’s an expression, “a picture is worth a thousand words” and this is especially true in the power industry. In fact, INMR’s competitive strength has always been and will remain our unique photos that take the reader directly to the scene, as if they are standing there themselves.

At the same time, periodic refinement and improvement are key to staying ‘ahead of the curve’. People in the power industry are very busy and we want to ensure that the time they devote to INMR must always be rewarding in terms of its content and style.

We hope to continue to earn the privilege of your time devoted to reading INMR and maintain its hard-earned status as among the industry’s most trusted sources of independent, objective information.

Thank you for your loyal and valued readership in our upcoming 20th year of publication.

Marvin L. Zimmerman Publisher

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Electrical Porcelain: No Ordinary ‘Commodity’ Although porcelain has long been an indispensable part of all types of high voltage equipment, its near total dominance over the substation has started to erode. Over the past two decades, composite housings have established a foothold in the industry and are seeing growth in such applications as instrument transformers as well as bushings, arresters and cable terminations. Still, porcelain remains ‘king’ in terms of share of all equipment insulation and this is not likely to change anytime soon.

Porcelain insulators should of course always be purchased based on competitive considerations of price and delivery lead times, assuming they meet basic international standards.

However, to label them ‘commodities’ ignores the fact that quality differences from one supplier to the next can still be substantial - even if all the standards are passed. It also greatly undervalues the critical role they play in the safe, long-term operation of very expensive network assets.

What seems to have changed, however, is the market’s perception of porcelain insulators. Today, with intense international competition and constant pressure to reduce costs, electrical porcelain is increasingly being regarded as a commodity.

But should porcelain insulators ever be labeled this way?

The term ‘commodity’ connotes something that has become so standardized that users make purchase decisions based solely on price and availability. Gasoline is a commodity and most drivers see no difference at all whether they fill up the tank at one station or another. Electrical porcelain, by contrast, is a far more differentiated product. For example, its final quality begins very early in the manufacturing process during the selection of key raw materials that make up its body and glaze, such as ball clay, kaolin and alumina (see article on p. 88). Then, each sequential step in production, if not handled correctly, risks introducing potential flaws, especially the critical firing process. Not every manufacturer has mastered the process control and quality assurance necessary to ensure a perfect product each time.

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Porcelain insulators used in these HV arrester housings may seem standard at first glance, but close inspection reveals unacceptable surface defect.

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PREVIEW

of this issue

Issue 98 Quarter 4 − 2012

14 Perspective

Volume 20 − Number 4

Cable Accessories

Electrical Porcelain: No Ordinary ‘Commodity’

44

Plug-in Solutions for Medium & High Voltage Applications

20 Editorial

Insulator Industry ‘Comes of Age’

44

24 Inside Track on Smart Grid One Tough ‘Balancing Act’

26 From the World of Testing

Utility Practice & Experience

48

Equipment Going Greater & Greener

Moroccan Power Utility Adjusts Priorities to Meet New Network Challenges

28 Silicone Technology Review Everything You Wanted to Know About Hydrophobicity

30 Reporting from CIGRE

48

Maintenance

64

CIGRE 2012

Comparison of Methodologies to Detect Damaged Composite Insulators

32 Transient Thoughts

Insulator Expertise Recognized

Insulators

34 Scene from China

Growing Importance of Monitoring Composite Insulators

36 Pigini Commentary

Most Insulator Failures Result from Improper Selection

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38 From the Research View Inter-Continental Transmission: Pipe Dream or Future Reality?

40 Woodworth on Arresters

Latest IEC, IEEE & CIGRE Arrester Activities

42 Focus On Cable Accessories What Impact on MV & HV Accessories of "Green" New Cable Insulation?

88 Advertisers AdvertisersininThis ThisIssue Issue

ABB Components & Insulation Materials 67 Alstom 37 Balestro 52 CSL Silicones - SiCoat Outside Back Cover Dalian Composite Insulator DCI 4, 57 Dalian HiVolt Systems 91 Dalian Insulator Group 18-19 Dalian Reliable Industrial 14 Dekuma Rubber & Plastic 59 Dextra Power 17 Dongguan Gaoneng Electric 1 DTR Corp.

87 EGU HV Laboratory 8 Glasforms 17 Hidro Jet 87

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HSP/Trench Group 81 Huayi Machinery Group 15 Hubbell Power Systems Inside Back Cover Hübers Verfahrenstechnik 87 Huntsman Advanced Materials 83 Imerys Ceramics 91 Integrated Engineering Software 119 Jinan Meide Casting 53 KEMA 27 MacLean Power Systems 11 Maxwell Technologies 43 Motic 69 Ofil 53 Omni LPS 51 Phenix Technologies 69

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Forensic Analysis of a Fractured 500 kV Composite Insulator

88

Raw Materials Play Crucial Role in Performance of Electrical Porcelain

2013 BUYERS GUIDE & DIRECTORY

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Central Index Quick Reference Charts Index of Suppliers by Category of Product Supplier Listings in Alphabetical Order

PK Insulators (Liling Huaxin) 9 QingZhou Shi Liwang Electric Technology 79 Reinhausen Power Composites 73 Rugao Dasheng Line Material 5 SGD La Granja 13 STRI 77 Salvi & C. 95 Shanxi Century Metal Industries 57 Shaanxi Taporel Electrical Insulation 25 Shandong Peiport Electric 85 Shenma Electric Power 6-7 Sichuan YiBin Global Group SYGG 71 Siemens, Arresters Div. Inside Front Cover TE Connectivity 45 Tianning Electrical Isolating Materials (Tenet) 2-3

Trench GmbH 61 Tridelta Überspannungsableiter 41 Ugur Turkyurt 140 Uvirco 69 Vogel moulds and machines 39 Volani Metais 102 Wacker Chemie 29 Wellwin Precision Moulds 15 Wenzhou Yikun Electric 33 Yizumi Precision Machinery 22-23 Xi’an Gaoqiang Insulation 31 Zhejiang Fuerte 57 Zhengzhou Jingwei Electric 63 Zhengzhou Xianghe Group Electric Equipment 21 Zibo Taiguang Electrical Equipment 35

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Insulator Industry ‘Comes of Age’ This issue contains INMR’s 19 th annual BUYER’S GUIDE & DIRECTORY, listing the leading suppliers of electrical insulators and related network components, hardware and equipment. Comparing this edition with the very first published in October 1994 one can quickly appreciate just how much this industry has changed in less than 20 years.

EDITORIAL EDITORIAL EDITORIAL

For example, some companies which dominated the international insulator business in the 1980s and early 1990s have receded into the background while others that didn’t even exist back then have burst suddenly and aggressively onto the scene.

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In addition, there are many companies from places such as China, India and Brazil that were essentially locally focused 20 years ago but who now do business on an international scale. More impressive still is the number of new manufacturers who have become active in this industry in recent years.

But, painful as all these adjustments were and despite the fierce nature of present competition, the insulator industry today is much stronger than it was two decades ago. Not everyone may agree with this assessment, especially given price levels that are much lower than they should be or the economic stagnation gripping some parts of the globe. Still, it is true.

For example, the quality of products has generally become much higher simply because any competitor with inferior products cannot survive too long in an open, transparent marketplace. Similarly, vocal opponents within the industry toward new insulator technologies have dropped former attempts to slow down the transition.

Painful as were all the adjustments made necessary by the fierce nature of present competition, the insulator industry today is much stronger than it was two decades ago.

But all these changes – while surprising and perhaps even remarkable given the short time frame over which they occurred – tell only part of how much the insulator business has evolved.

Back in the early 1990s, the industry was for the most part ‘shielded from the real world’ by a combination of discriminatory local standards and strong preferences by national customers such as power utilities and local electrical apparatus OEMs. Today, with broad acceptance of IEC standards, opening up of free trade and globalization of the OEM industry, all these protective barriers have essentially collapsed. And this has exposed the industry to the full and painful brunt of competitive forces.

Many industry players from the 1980s and 1990s could not cope with the rapid adjustments that the new market forces made necessary and soon disappeared from the scene. Insulator manufacturers in places such as

Indeed, seldom does one hear these days of manufacturers trying to discredit new technologies or to convince customers that only their technology is valid and reliable.

It seems they realize that the ‘technology genie is out of the bottle’ and there’s no point trying to squeeze him back in. In fact, unlike the past, insulator companies today are at the forefront in setting international standards for new insulator technologies – basically taking over this task from the power utilities.

So, perhaps it can be said that ‘shock treatment’ and bad times are sometimes necessary for any once sheltered industry to totally re-invent itself. To emerge more efficient and far stronger. Far better able not only to serve the long-term needs of its customers but also to satisfy the requirements of its employees and shareholders.

Marvin L. Zimmerman mzimmerman@inmr.com

INMR Issue 98 • www.inmr.com

ISSN 1198-7332, E-mail: info@inmr.com • Editor & Advertising Sales: Marvin L. Zimmerman: mzimmerman@inmr.com, 1-514-939-9540 中国地区联系方式：余娟女士 电话: 135 1001 6825 / juan.inmr@yahoo.cn Magazine Design: Cusmano Design and Communication Inc, 1-514-509-0888, E-mail: corrado@cusmanodesign.com Contents of this publication are protected by international copyrights and treaties. Reproduction of the publication, in whole or in part, without express written permission of the publishers is prohibited. While every effort is made to verify the data and information contained in this publication, the publishers accept no liability, direct or implied, for the accuracy of all information presented.

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Germany, Finland, South Africa, France, Spain, Italy, the U.K., Switzerland, Australia, Brazil, the U.S. and Canada entirely shut down operations. Others were re-structured or sold off just to stay alive.

Editorial

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One Tough ‘Balancing Act’

Inside Track on Smart Grid

The role played by Renewable Energy (RE) is only likely to increase in all major electricity markets. But truly large-scale incorporation of these sources into existing grids remains a complex task for grid operators and power supply utilities. For example, successful RE integration depends greatly on Electrical Energy Storage (EES). Therefore developing both small and large centralized as well as de-centralized EES systems will be essential in order to meet growing global energy demand.

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Today, most electricity is consumed as it is produced. As such, any imbalance between supply and demand leads to instability and lower quality of power supply. Power demand also depends on the time of day and season and prices vary accordingly. Moreover, electricity is often generated some distance from where it is consumed and has to be supplied to customers via the grid, with all the attendant risks of failure or network congestion.

Given the above considerations, although RE will certainly contribute to a growing share of total electricity use in the future, its large-scale integration will not be easy.

Other factors only add further complexity. Wind and solar generation are location dependent. They also experience intermittency in addition to a combination of uncontrollable variability and unpredictability.

Although on a system-wide level, RE power plants generate electricity (much as do all other types of power plant), there are fundamental differences. For example, RE power has distinct characteristics and requirements in generation, transmission and operations technologies compared to conventional generation. Understanding these differences and their interaction with other parts of the power system therefore becomes the basis for large-scale integration of RE into the grid to succeed.

As mentioned, large-capacity RE generation plants are usually located far from where the electricity will be consumed.

Therefore they rely on long-distance power transmission,

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generally AC (except for offshore wind farms that rely on highvoltage DC). In the future, ultra-high voltage AC and DC will become more common, both offering substantial advantages while adding yet more complexity.

Given the above, a number of new technologies will need to be put into place to increase flexibility and improve the efficiency of power systems that, by definition, must always balance generation and consumption. Part of this balancing act is now being achieved using conventional generation such as hydro, nuclear, gas- or coal-fired power plants, as well as pumped hydro storage, widely used but topically restricted. In the future this may increasingly also involve demand response with the help of Smarter Grids, expanded transmission capabilities and energy storage.

For its part, energy storage offers a broad range of uses and configurations. These can assist integration of RE in a number of ways, from allowing utilities to maintain a reliable energy supply by levelling consumption, to managing uncertainty in RE generation through building reserves, to flattening output from individual RE plants. With them in place, utilities will be able to adjust power quality, frequency and voltage as well as control fluctuations in energy demand and support users during any network disruptions.

Different EES systems are suited for different applications, offering flexibility ranging from only seconds to months.

Which system technology is ultimately used will then depend on its power and energy density. A system with a high power density is able to discharge large amounts of power on demand. By contrast, a system with a high energy density is able to discharge continuous energy over long periods of time.

Examples of the above include: flywheels and superconducting magnetic energy storage that provide instantaneous frequency regulation services to control variability; different types of batteries to help balance the grid for minutes or hours at a time; technologies such as pumped storage and compressed air that are used to mitigate weather uncertainties over hours and days; and several other technologies allowing storage of energy over days or even months for subsequent use.

The IEC has recently set-up a new Technical Committee (TC) that will develop the standards needed for EES systems not covered by any other organization. This TC will apply use cases and develop architectures and roadmaps to support industry in building affordable and reliable EES systems that can be incorporated into existing grids anywhere.

The IEC has also published a new White Paper on the largescale integration of RE and the use of large-capacity EES systems. Readers can download it at: www.iec.ch/whitepaper/gridintegration

Richard Schomberg IEC Chairman of the Smart Grid Strategic Group Chairman, TC 8 – Systems aspects for energy delivery Chairman, PC 118 - Smart Grid user interface Responsible for Smart Energy Standards at EDF-Group

Editorial

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Equipment Going Greater & Greener

from the world of TESTING

Events surrounding the recent opening of DNV Kema’s updated ZKU test laboratory in Prague offered me an opportunity to reflect on recent developments when it comes to power equipment. Of course, there’s too much to cover on a single page, but two trends really do stand out.

One is the scaling up of transmission while the second relates to growing awareness of the interaction between electrical apparatus and the environment.

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These days, the world is becoming ever more interconnected – and not only by communications, but by energy infrastructure as well. Large-scale transmission is now a booming business, increasing reliability of supply while also facilitating operation of the energy market. In the continued absence of high capacity storage, interconnectivity helps to better match supply with demand load. At the same time, the distances that separate generation and consumption are only growing longer, partly due to growing use of renewable energy sources and also because conventional generation is increasingly being sited in peripheral locations. This general tendency has led to higher system voltages on the one hand and to an increase of short-circuit power on the other.

In the high-power laboratory business, for example, there is a marked increase in demand these days for testing switchgear for 800 kV, the system voltage of choice in certain parts of the world. 1100 and 1200 kV systems, by contrast, will likely remain in the ‘pioneering phase’ for years to come.

At the same time, in distribution and other transmission systems, short-circuit current is rising, often to 63 kA, sometimes to 80-90 kA, and even to 100 kA in the vicinity of power plants. Generator circuit breakers are being tested that have to deal with fault currents of over 200 kA and we at KEMA, for example, have been working to develop test methods and facilities to cover type testing for such equipment.

Another common denominator in the power industry these days falls under the heading of environment and safety. In regard to the former, this works in two directions since the environment acts upon us in unpredictable ways while we in turn act upon the environment. Climate change concerns are calling for increased equipment performance including the need for temperature rise testing under higher than standardized ambient conditions. There’s also a trend toward higher mechanical endurance as well as robustness and greater seismic withstand requirements as well.

Most of all, growing attention on how electrical equipment impacts the environment is causing technical challenges both to developers and manufacturers. A clear tendency now exists, for example, to move away from use of SF6, a potent greenhouse gas. Indeed, in several countries, e.g. Australia, its import and use is subject to heavy taxation and import levies – even though many believe that, given proper handling, SF6 can still be applied in a sustainable way.

Alternatives to SF6 in distribution are solid or air insulation but, for transmission voltages, solutions must be found using alternative media. The best example here is the rapid development of vacuum switchgear for transmission voltages

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– a long-time practice in Japan but now also developing rapidly in China and Europe. At the recent CIGRE exhibition, various novel proposals of this technology could be admired while several pilot projects are now running worldwide.

KEMA has already performed tests with several designs of high-voltage vacuum switchgear. The general experience is that certain long time ‘goodies’ that are daily commodities in synthetic SF6 breaker testing cannot be used with vacuum circuit breakers because they react more sturdily. The simple solution is application of three-phase direct testing – probably the most elegant simulation of real service conditions.

However, above circa 120 to 130 kV, this requires too much power, even for the largest laboratories.

Apart from vacuum ‘moving to high voltage’, alternative gases such as pressurized CO2 are already under field trial. Such alternative technologies, however, become a major challenge for standardization since the interruption medium directly impacts breaker performance. Though it’s often intended that standards must treat test objects as ‘black boxes’, they nevertheless contain provisions that directly reflect certain features of the specific technology being applied.

In other applications, use of new materials is a direct spinoff from concerns about the environment. Biodegradable oil in transformers, for example, reduces not only the carbon footprint but also risk of fire. Amorphous metal transformers show significant reduction in energy losses compared to traditional silicon steel and are therefore now preferred in fast growing Asian markets.

Health and safety is yet another emerging topic when it comes to development of power equipment. Concerns related to fault arcs have led to a renewed look into testing and a new Internal Arc Classification system has been developed. In the event of a fault arc inside an installation, the resulting hot exhaust gases and flames must not endanger nearby personnel. Given more power and in ever-smaller installations, the rooms themselves could be at risk because of pressure rise due to any internal fault arc not being sufficiently vented. This is now under study by CIGRE WG A3.24 and a straightforward model has been developed for predicting pressure rise in the installation and within the installation room as a result of a fault arc.

Subtler are the possible effects on people of power frequency magnetic fields. Legislation in some countries has required replacing sections of overhead lines in populated areas by underground cables, giving rise to renewed study (to be confirmed by measurements) of the interaction between line and cable systems. Certain GIS installations, for example, are being optimized to produce very low external magnetic fields.

So, the overall message seems clear: all the prosperity that derives from electricity is there to be enjoyed – but with lower impact on the world around us.

Dr. René Smeets Rene.Smeets@dnvkema.com

Editorial

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Everything You Wanted to Know About Hydrophobicity* But Were Afraid to Ask

*

During the 1980s, the term hydrophobicity was so unfamiliar to those in the electric power industry that probably few could pronounce it let alone explain what it meant. But over the past two decades this exotic word, once reserved mostly for people like botanists, has become a ‘hot’ topic in the area of outdoor insulation. A brief review of why this is seems in order.

Silicone Technology

REVIEW

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What is hydrophobicity & what role does it play in outdoor insulation?

Hydrophobicity of a material is a measure of its intrinsic resistance to water flowing along its surface. A material is highly hydrophobic if it resists flow of water and conversely least hydrophobic (i.e. hydrophilic) if any dropped water easily forms tracks. The term derives from the Greek words hydro for water and phobus, meaning ‘fear’. Ergo, hydrophobicity is literally ‘fear of water’. This is, of course, a highly desirable property when it comes to the performance of any insulation material, especially in contaminated environments. Water beading on the surface significantly reduces leakage current and risk of pollution flashover during wetting events.

How is hydrophobicity measured?

One of the first and still most popular methods to assess the level of hydrophobicity of an insulation material in the field involves an interpretive scale popularized in the early 1990s

by STRI in Sweden. Several distinct classes were identified and measurements involve spraying water onto the insulator surface and comparing the resulting appearance with reference photos that best represent each hydrophobicity class – 1 through 7.

Another technique to evaluate hydrophobicity involves monitoring leakage current since this parameter is typically proportional to hydrophobicity. Basically, the greater the loss of hydrophobicity, the higher will be the leakage current.

In a laboratory setting, hydrophobicity can also be quantitatively evaluated by measuring the contact angle formed between a water droplet and the surface of the material. This parameter is a representation of surface tension in the interfaces between water and the material’s molecular structure. The lower the contact angle, the more wettable the surface. Contact angles below 35° mean a hydrophilic surface while from 90° up indicate growing measures of hydrophobicity – all the way to so-called ‘superhydrophobicity’ at 150°.

What accounts for the hydrophobicity of silicones?

Inorganic materials such as porcelain and glass are inherently hydrophilic while polymers such as ethylene propylene rubbers (EPRs) and special types of epoxy have varying degrees of initial hydrophobicity, depending on their molecular structure. Unfortunately, most such polymers will irreversibly lose this property over their service lives. The hydrophobicity of silicone materials, by contrast, derives from low molecular weight chemical chains (LMWs) at the surface. The greater the surface concentration of these, the better will be the hydrophobicity. Loss of hydrophobicity of silicone is due to temporary depletion of these components that are removed

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from the surface by factors such as excessive wetting, corona (from hardware and from water drops) and arcing activity on the surface.

Is a change in hydrophobicity status of silicone permanent?

As mentioned, rubber materials such as EPR tend to lose their initial hydrophobicity relatively quickly and also irreversibly.

Silicone, by contrast, has the unique ability to regenerate its original hydrophobic behavior thanks to continuous migration of the LMW components from the bulk material to the surface.

However, the presence of large amounts of these chains in the material is no guarantee that hydrophobicity will be restored.

Rather, this will depend on the material’s ability to transfer the LMW components from the bulk to the surface through natural diffusion processes that are proportional to the concentration gradient. This process is termed hydrophobicity recovery.

From experience to date, this desirable diffusion of LMW chains from the bulk to the surface will persist throughout the normal service life of a well-formulated silicone insulator.

What happens to hydrophobicity of silicone if a layer of pollution has built up on the surface?

Insulators operating in polluted conditions may soon experience a contamination layer built up on their surfaces. Here again, one of the highly valued properties of silicone is that the LMW chains have the ability to transfer through this pollution layer, effectively enveloping it and thereby restoring hydrophobicity to the surface – referred to as hydrophobicity transfer. This process, however, takes from hours to days depending on the rate of pollution accumulation.

Is hydrophobicity recovery and transfer the same for all silicones?

It is probably fair to state that almost all silicone rubber materials used in electrical insulators will have very good to excellent inherent hydrophobicity in their virgin condition. But it also true that different materials may have much different service performance when it comes to such matters as loss of hydrophobicity, hydrophobicity recovery and hydrophobicity transfer. One cannot assume that every silicone material will perform exactly the same over the insulator’s service life since each is typically a proprietary formulation that is unique to its manufacturer. Every supplier looks for a formulation (comprising the base silicone rubber, various fillers, binders and other ingredients) that meets an optimal balance of material cost, maximum productivity of the molding cycle, performance in the field and resistance to ageing. Some formulations do this very well while others ‘less well’.

Do other factors apart from formulation play a role in determining long-term hydrophobicity of silicone?

Yes and these typically relate to factors in the service environment, including discharge and corona activity, type of contaminants deposited in the pollution layer, temperature, humidity, and UV radiation. All of these, either individually or in combination, can impact hydrophobicity.

Hydrophobicity loss, recovery and transfer will be discussed more thoroughly in future columns.

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CIGRE 2012 This past session of CIGRE (International Council on Large Electric Systems) – a biennial event held in Paris – forcefully demonstrated the continued importance of the topics dealt within its 16 various Study Committees.

A total of some 3200 participants were registered for the session and more than 3600 toured the exhibition, with the number of exhibitors having grown to almost 200.

REPORTING FROM CIGRE

In Study Committee B2, Overhead Lines (OHL), the focus these days is on areas such as finding ways to increase public acceptance of new lines, enhancing capacity of existing lines and improving their reliability and availability. Over and above these goals, any new technical demands and requirements from the market automatically trigger set up of a new Working Group to prepare a Technical Brochure analysing the current state-of-the-art. Quite often, the results of such Technical Brochures end up as a new standard (usually within IEC).

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Participation at these sessions offers an excellent way to advance training of power industry personnel. During one week, for example, a typical participant can listen to diverse presentations in the Technical Sessions (one day for each Study Committee), make contributions of their own and have discussions with colleagues from all over the world. So, the knowledge gain is quite efficient, even if some interesting events take place simultaneously and cannot all be attended.

This CIGRE session also saw meetings of numerous Working Groups due to their members being reunited at this event.

In regard to composite insulators, Working Groups D1.27 (Materials) and B2.21 (Insulators) each had a full day session.

Most likely, this was the last meeting of B2.21, because just one duty is now left, namely finalization of the Technical Brochure Assessment of Composite Insulators by Means of Online Diagnosis. As Convenor, I am now preparing its final draft, after which the document will be sent to nominated reviewers and to all Study Committee members for evaluation and comment, before being released for publication.

Forthcoming events for SC B2 include the International Colloquium on UHV, which will be held in New Delhi next April, including a visit to the 1200 kV National Test Station, which will have been in operation for approximately one year by that time. Also, a CIGRE Symposium, Best Practice in Transmission and Distribution in a Changing Environment, will be held in Auckland, New Zealand next September 16 and 17, immediately following the 2013 INMR WORLD CONGRESS in Vancouver, Canada – allowing both to be part of one very useful and convenient travel program.

Last but not least, each CIGRE session features an official reception and this past one took place under the Pyramid du Louvre and included access to the fantastic art and antiquities section of this great museum – a very impressive evening.

Once a Paper is accepted by its author’s National Committee, it is submitted to Special Reporters who analyze it within the context of their respective Technical Sessions. Then, one or two questions are typically raised and every participant is given the opportunity to answer within a timeframe of 3 to 5 minutes. This has proven a very efficient process because, instead of lengthy presentations by authors, more contributions are possible and more opinions and experiences can be dealt with.

This year, Igor Gutman from STRI, Alberto Pigini, Jens Seifert from Lapp Insulators and myself prepared a joint Paper titled Assessment of the Condition of Overhead Line Composite

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Insulators. This reflected the current work within Working Group B2.21 on the subject and, after being evaluated by the Special Reporters, a short presentation was held to respond to their questions. Additionally, a poster session was scheduled earlier in the week during which the main aspects were displayed. A variety of such interesting topics were discussed within SC B2 including: use of UHV and HVDC to inter-connect long distances; Smart Grid as a generic terminology for making a network more efficient; and intelligent condition monitoring, to which the above-mentioned paper belonged.

Dr. Frank Schmuck frank.schmuck@sefag.ch

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Transient Thoughts

Insulator Expertise Recognized

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On my last trip to Sweden, I visited the Nobel Museum in Stockholm’s Gamla stan or old town. While I recognized some notable past contributors to the chemistry and physics of insulation systems, including Arrhenius (1903), Lord Rayleigh (1904), Thompson (1906) and van der Waals (1910), more recent prizewinners were not so familiar to me. Perhaps the closest link to a recent Nobel Laureate from an INMR perspective would be Dr. Paul Lauterbur, who worked at the Dow Corning Mellon Institute Laboratory. He was intrigued by how particles such as carbon black or silica improved the properties of silicone elastomers, before eventually branching out to develop magnetic resonance imaging – for which he shared the 2003 Nobel Prize in Medicine.

IEEE Task Forces to identify practical ways to test insulators under icing conditions, which then resulted in development of the IEEE Standard 1783, “Guide for Test Methods and Procedures to Evaluate the Electrical Performance of Insulators in Freezing Conditions”.

While Dr. Lauterbur’s research of silicone rubber took place during the 1950s and did not contribute to his becoming a Nobel laureate, there are two recent examples where the scientific community did acknowledge the contributions of insulator specialists. In Canada’s province of Québec, an organization called ACFAS (association francophone pour le savoir) was established in 1923 to recognize and promote research achievements. At a recent gala in Montréal, Professor Masoud Farzaneh of the Université du Québec à Chicoutimi was awarded this group’s Urgel-Archambault prize covering all physical sciences, mathematics, computer science and engineering.

Canadian research in this regard was supported by national and local governments, along with several power utilities and manufacturers of electrical equipment. In the U.S., it is the National Science Foundation (NSF) that provides funding to research and education in science and engineering. I was pleased to see that there are many NSF grants in the field of ‘lightning’, with a total of 33 awards that include such experts as Professors Krehbiel, Orville, Pahwa and Rakov. This support certainly reflects the importance of lightning protection in dayto-day operation of secure power networks. Unfortunately, a search for ‘insulator’ in the current NSF award database did not turn up any interesting projects in electrical engineering.

Still, it was a pleasant surprise to see that a well-known insulator expert, Professor Maciej Kumosa, along with his team at the University of Denver, have just received a grant to study the engineering properties of high-voltage polymer based composite conductors. Dr. Kumosa is known for his work in the area of brittle fracture, starting with investigation of field failures on EHV systems at the Western Area Power Administration (WAPA) in 1994.

This work was described in a pair of articles in the IEEE Electrical Insulation magazine (2005), covering research into the causes of brittle fractures as well as methods to prevent them.

Born in Iran, Professor Farzaneh completed his graduate studies in France before settling in one of Canada’s coldest regions in 1986. There, he was quick to realize the importance of solving reliability problems arising from ice and snow accretion on insulators and conductors. He joined an existing team that he later expanded into a much larger group (CIGELE) to address such issues, which only grew more relevant in 1998, following the region’s devastating ice storm.

Over the years, Masoud inspired and guided more than 220 professionals (myself included since we co-authored two books and co-operated in a series of interesting tests on the icing performance of line arresters). He has also led several

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CENGIVRE, an international center to study atmospheric icing on electric power networks, coordinates the work of Professor Farzaneh and his colleagues. Some of these researchers have a new initiative to study anti-icing materials (LIMA) with special focus on sub-micrometer dimensions. These practical nanoscale materials can be super-hydrophobic, with water drop contact angles so high that their surfaces repel all dirt and ice.

Maciej and his colleagues have practical experience as well as intimate knowledge of how power systems are constructed. They will therefore be able to review the combined effects of stressors such as ozone, pollution, moisture, elevated temperature, high mechanical stress and elevated electric field on the glass/polymer composite sheaths of composite conductors (PCCC). These conductors offer lower sag than traditional aluminum conductors with steel core (ACSR) because the polymeric core has a lower coefficient of thermal expansion than steel.

I congratulate Professors Farzaneh and Kumosa on the recent recognition of their outstanding work by ACFAS and NSF.

Dr. William A. Chisholm W.A.Chisholm@ieee.org

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Growing Importance of Monitoring Composite Insulators Composite insulators possess certain advantages over ceramic types and their application is growing rapidly.

For example, it’s estimated that composite insulators presently account for more than 1/3 of the total insulator population on all Chinese transmission lines. In the case of new lines, their share of all insulators installed is closer to 50% and when it comes to UHV they are by far the dominant type being used.

SCENE FROM CHINA

The earliest silicone composite insulators have been in service now for 40 years and there is almost 30 years service history in China. Given their spiraling use and the many years in service, research into methodologies for in-service monitoring of defects or damage is taking on prime importance (see article on page 62). There are a number of potential failures modes that represent possible hidden threats to the safe operation of composite insulators, including flashover, ageing, and mechanical failure.

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Research to find improved

Among the first category, lightning flashover is typically the in-service monitoring techniques most common threat to these insulators mainly because it must continue to ensure depends on dry-arc distance with little relationship to insulator material. If the dry-arc distance of a composite insulator is long-term reliable operation of the same as that of a porcelain or glass string, it has basically our growing population of the same lightning flashover withstand. While composite insulators cannot increase lightning flashover voltage, composite insulators. they will certainly not lower a line’s lightning performance.

Anyway, auto-reclosing in such cases is usually successful and therefore this potential problem has comparatively low Failure by fracture of the internal FRP core rod represents the impact on network reliability. most serious potential failure mode of a composite insulator Due to the superior hydrophobicity and hydrophobicity transfer and is also the most difficult to monitor for. To make the property of their silicone rubber housings (see page 26), situation even more complex, two uniquely different types composite insulators offer excellent pollution performance. of fracture have now been identified. One is the classical This translates into relatively few pollution flashovers, which brittle fracture, which has been the focus of much research is one of the principal reasons for their extensive application. over the years and has been successfully simulated in the On the other hand, flashovers caused by bird excrement laboratory. The other type has occurred several times in present a much bigger problem mainly because large birds China in recent years and results in a fracture section with release ‘streamers’ near the tops of insulators, i.e. essentially a much different appearance. As discussed in the article on equivalent to a section of the conductor ‘floating in air’, thereby page 72, a composite insulator with this failure mode was greatly distorting an insulator’s E-field distribution. Moreover, removed from a 500 kV AC line in Guizhou Province. One month if the bird streamer is close to the edge of the insulator, the prior to fracture, IR measurements had detected a localized distortion in E-field is even greater and more likely to cause temperature increase on this insulator. When voltage was flashover. Composite insulators are more prone to flashover applied to the fractured insulator in the laboratory, discharge due to bird streamers than are porcelain or glass strings since was detected at the location with the temperature increase. they have smaller shed diameters. Indeed, among flashover This demonstrates that this new type of fracture failure failures recorded as due to undetermined cause, most are can be detected through pass-by field inspection using a likely to have been triggered by birds. combination of IR thermography and UV camera. Indeed, several countries now employ helicopter inspection with both The second major category of threat to composite insulators types of equipment.

– ageing – involves occurrence of surface phenomena such as cracking or crazing under natural weathering. The ageing Although there are presently a variety of in-service monitoring of silicone rubber is often accompanied by a decrease in methods for composite insulators, few meet all the criteria hydrophobicity and a corresponding reduction in pollution of being simple, effective and convenient. Research to find flashover withstand. However, ageing can also be due to improved in-service monitoring techniques must therefore other factors, such as bird pecking that can damage some continue to ensure long-term reliable operation of our growing of the silicone sheds or sustained strong winds that can tear population of composite insulators. certain sheds depending on diameter and design. Mechanical Prof. Guan Zhicheng failure, the third main category of possible problem, basically Tsinghua University, Shenzhen Campus involves core fracture of a composite insulator, causing a dropped conductor. guanzc@tsinghua.edu.cn

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In-service monitoring of composite insulators basically involves inspection to identify the type and extent of damage associated with these possible failure modes. In the case of lightning flashover, a lightning location system is typically available which can assist maintenance staff to locate the affected tower. In China, the policy of power supply utilities is to identify which composite insulator experienced lightning flashover and to replace it so as to eliminate any risk of hidden resulting damage.

On-line leakage current monitoring of composite insulators is then usually used to evaluate their pollution flashover withstand. In regard to flashovers caused by bird streamers, pass-by inspection is used to look for nests on towers or the presence of large birds near lines. Similarly, when it comes to ageing and damage to silicone sheds, visual inspection is the main technique, with or without assistance by optical devices.

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Most Insulator Failures Result from Improper Selection At the recent CIGRE meeting in Paris and in particular during the Study Committee B2 session on Overhead Lines, there was much discussion on the still debated issue of the ‘stateof-the-art’ of composite insulator technology. A spectrum of contradictory case histories with these insulators was reported, ranging from complete satisfaction at one end to total dissatisfaction at the other. The only consensus was that there has been a lot of improvement compared to previous designs, which account for most of the unsatisfactory experience.

But some experts went much further, claiming that the reliability of the latest generation of composite insulators (the 5th for some suppliers) is essentially the same as for ceramic types.

P I G I N I Commentary

So, one might well ask: why is that more than four and a half decades after first being introduced, there is still lack of agreement on whether composite insulator technology has reached maturity or indeed will ever offer a valid alternative to ceramic insulators?

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In my opinion, the underlying issue behind such contradictory views on reliability is based on the fact that performance of any insulator depends mainly on choice of design given the intended service environment. And, in the case of composite insulators, this has not always been done properly. For example, inappropriate or too superficial a specification from the electrical standpoint may lead to flashover of ceramic insulators but can result in irreversible damage in the case of composite insulators.

Composite insulators offer a number of well-recognized advantages, however – unlike what was promoted originally – they are not ‘indestructible’. Quite the contrary. Therefore, to ensure performance comparable to or better than that expected of ceramic insulators, great care must be taken in their specification, handling and installation. In fact, most reported problems with these insulators where I was directly involved in failure analysis were due to deficiencies in specification and selection from the electrical point of view. Electrical design of composite insulators should not be made looking solely at their flashover performance during short-term tests but rather must be based on the risk of surface degradation from partial discharges which, over the long term can cause tracking, erosion and eventual failure.

This is a critical shortcoming since composite insulators are very vulnerable to damage should there be such continuous partial discharges and arcing activity on or near their surfaces.

For example, many of the documented failures have been due to insulators being installed without suitable shielding electrodes

Similarly, failures have sometimes been the result of inaccurate estimation of the real pollution service environment by users.

CIGRE Brochure 142-1999 (a highly recommended reference guide) explains that experience from laboratory ageing tests as well as field trials has confirmed that there are three classes of leakage current on composite insulators under normal wetting conditions: a. a low-value, highly intermittent class; b. a relatively high average current of a few mA, but far from values typical of pre-flashover conditions; c. a high current value class (i.e. some hundreds of mA) indicating that the insulator is nearing flashover.

While ceramic insulators are designed looking mainly at the ‘c type’ class of leakage current, composite units should be designed instead taking ‘b type’ currents into account. In fact, research has indicated that while class ‘a’ currents have little influence on long-term performance, class ‘b’ currents can lead to tracking and erosion – and possibly permanent failure.

As a result, there should always be sufficient design margin between withstand severity and actual environmental pollution whenever selecting composite insulators. The critical need is to limit leakage current over the full service life taking into account the possible influence of service stresses on surface hydrophobicity and wettability. Therefore, in the case of composite insulators (either AC or DC), the conventional approach based on pollution classes as defined in IEC 60815 is not recommended.

Rather, to assure satisfactory service performance, a statistical approach must be made that accounts for both environmental parameters and specific insulator characteristics. In particular, specification in terms of required creepage distance alone is not sufficient. For example, the efficiency of a profile may become very low if too much creepage is forced on a given arcing distance.

Indications as per IEC 60815 should ideally be regarded more as an ‘orientating tool’ but not as a substitute for the information that comes from testing.

For those composite insulators already installed on lines and where it is too late to change specifications, diagnostics based on measuring leakage current along selected units can help identify any insufficiency in design and trigger washing should average leakage current values reach the destructive class ‘b’ type.

While only the aspect of electrical design is considered in this column, suitable specification from the mechanical point of view is of course also important and possibly even more so than for ceramic insulators. Again, many reported failures, especially on recent generations of composite insulators, have been due to inaccurate mechanical specification or by mishandling and installation practices that do not take into account the permanent damage that can occur.

In principle, the maturity and intrinsic reliability of composite insulators can now be considered satisfactory and of the same high level as ceramic insulators. However, reliability in practice will depend greatly on whether the electrical and mechanical specifications are accurate and also account for their special characteristics, response to specific service stresses and methods of installation.

Failed insulator after tracking wheel test.

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to limit electric field gradients near their high voltage end (and even at their earth end in the case of very high system voltages).

Alberto Pigini pigini@ieee.org

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Inter-Continental Transmission: Pipe Dream or Future Reality?

From the Research View

Every two years, people involved in transmission of electricity gather in Paris for the General Session of CIGRE and discuss practical issues covering a range of diverse but related fields. This past August, over 3000 experts and decision-makers from within the industry and across nearly 100 countries took part. At the same time, the associated technical exhibition, which has grown considerably over previous years, allowed delegates to follow progress in services, tools, equipment and materials when it comes to electric power systems.

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Issues related to insulators and similar components were discussed during the sessions of Study Committees B2 (Overhead Lines) and D1 (Materials & Emerging Test Techniques). The topic of lightning protection and insulation coordination was also covered during the session of Study Committee C4 (Power System Technical Performance). For example, a joint paper by Frank Schmuck, Jens Seifert, Igor Gutman and Alberto Pigini during B2 reviewed the latest tools for condition assessment of composite insulators.

This triggered debate on the maturity and reliability of this technology (see Pigini Commentary on p. 36). While delegates agreed that there have been great improvements in design and performance of these insulators, substantial differences still exist when it comes to views regarding expected performance under polluted conditions.

Pollution performance of line insulators was also discussed within D1, where the effects of desert conditions and the critical role of optimal shed geometry for this environment were both reviewed in depth. It was also pointed out, in this regard, that complex test methods such as the dust cycle method are difficult to standardize and the focus should instead be placed on simpler tests, e.g. the solid layer method.

Also the need to standardize a test under conditions of heavy rain was proposed and preparing this will become the task of a newly established working group under Alberto Pigini.

However, what especially captivated my attention (as well as that of many other participants) was the Session’s opening speech by Liu Zhenya, President of the State Grid Corporation of China. The fact that Mr. Liu was awarded the honor of delivering the keynote address was certainly appropriate.

The whole world these days seems to be looking toward the growing UHVAC and UHVDC power networks in China as models for future development in this sector.

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Surprisingly, Mr. Liu’s presentation did not concentrate on all that has already been achieved. Instead he outlined his bold, if controversial, vision of how better exploitation of global energy resources could be achieved by mega-projects such as a ±1100 kV DC transmission highway linking central Asia and Europe.

Growing energy shortages in densely populated areas combined with the need to finally reverse ongoing dominance by fossil fuels have triggered new efforts to increase the share of renewable resources such as wind and solar. Nevertheless, in spite of the growing role of electricity grids in allocating energy, balancing supply and demand throughout the world cannot always be assured. A good example is Europe, where it is estimated that as much as 70% of the energy consumed by 2030 will have to be ‘imported’. Among the possible scenarios assumes direct transmission of electric energy from nearby continents, e.g. North Africa or the Middle East.

Referring to the fact that the cost-effective distance of a ±1100 kV DC line with 11 GW capacity is at least 5000 km, Mr. Liu pointed to Xinjiang in western China, Kazakhstan and even Siberia as all potential sources of electric power that could one day be transmitted to Europe. All these regions have excess energy resources, in both fossil and renewable forms, and the scenario foreseen assumes local electricity production and its transfer via direct or relayed links.

Given likely energy shortages after the closure of German nuclear power plants, Mr. Liu claims that inter-continental transmission offers competitive advantages versus the cost of connecting new wind parks in the North Sea to the country’s main grid. (Those looking for more details on this topic can search for the summary at: www.cigre.org.)

This vision certainly seems technically feasible since manufacturers of high voltage equipment are already well advanced in developing the equipment necessary for UHVDC networks. Engineers at ABB, for example, recently announced success in manufacturing and testing a 1100 kV converter transformer. Special attention is also being devoted to developing new insulation systems, where composite insulators will apparently play a major role. Moreover, new test sites are being set up to address the need of verifying the performance of these designs under real service conditions.

However, for Mr. Liu’s bold vision to succeed, the main issue may well turn out to be public acceptance as opposed to economics or technical feasibility. Even today, there are concerns in various parts of the world regarding security of supply and environmental impact of energy supplied from outside. In parts of Europe, these types of concerns stem from past experience with gas supplied from Russia, where the threat of ‘closing the valves’ presented a potent argument during energy related negotiations.

Does Europe have alternative solutions to meets its future energy needs? Perhaps not. But, whatever the answer, long-term regional stability as well as strong trust among international partners will be key prerequisites in order to one day turn the prospect of inter-continental transmission into reality.

Prof. Stanislaw Gubanski Chalmers University of Technology stanislaw.gubanski@chalmers.se

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Latest IEC, IEEE & CIGRE Arrester Activities

Woodworth on Arresters

A unique event dealing with surge arresters took place in mid October in San Diego, California. IEEE Surge Protective Devices Working Groups WG 3.3.11 and WG 3.4.14 met with IEC arrester standards Maintenance Team TC37-MT4. There was also a concurrent overview meeting of CIGRE A3.25. Such IEC-IEEE-CIGRE meetings are an excellent place to learn about what’s happening in the world of arrester standards and, below, I summarize what has been updated as a result of these efforts.

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A new edition of IEEE C62.11, the main standard for testing HV arresters, has now been completed and will be published later this year. This new edition is harmonized with the latest draft of the comparable IEC test standard, 60099-4. For the first time in the history of IEEE, a standardized test is available that specifies the thermal energy handling capability of a surge arrester. This new edition also includes the first ever test for impulse energy handling capability as well as an improved discharge voltage test.

The maintenance team met for nearly two days at this session, discussing comments from the last CD. The next edition of IEC 60099-4 moves now to the CDV stage and will be issued to the various national committees early next year for review, further comment and vote. The main focus of this latest edition is on improved energy tests where thermal and impulse energy withstand are now to be tested separately. From the reaction so far, it appears that the IEC community will be accepting this new approach to energy handling. The TOV tests are also being improved and simplified. Maintenance Team members agree that past ageing testing of disks can no longer be justified in the way the data was used to adjust voltages for other tests. So it has been eliminated. We are still struggling, however, with how to evaluate performance of samples in the ageing test so that all products are treated fairly. The next meeting will be held in June 2013 in Cardiff, U.K. The first edition of IEC 60099-9 HVDC Converter Station Arresters is also at the CDV stage and comments from the last CD were reviewed at this meeting. The standard basically applies solely to porcelain-housed arresters, cast resin arresters, polymer-housed arresters and gas-insulated metal enclosed arresters (GIS-arresters) used as DC-bus and DC-line/cable arresters. Until now, the only guidance in terms of testing these types of arresters had come from CIGRE brochure TB34, published in 1989. All things considered, the CIGRE brochure was clearly outdated so there is an obvious need for a formal new IEC standard.

Presently, CIGRE Working Group A.3.25 has produced the most advanced and useful arrester information with regard to testing and applications. Prof. Volker Hinrichsen and Max Tuczek at the Technical University of Darmstadt are associated with the CIGRE team and continue to produce superb and thought-provoking research. Research discussed at this meeting included: AC Impulse Testing The goal of this research is to quantify the effect of different types of impulse on varistor materials in an effort to find practical methods of separating good disks from bad disks during production. Presently, switching surge or high current impulses are used to assess varistor quality at time of

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manufacture. Preliminary data shows that a short 1-2 cycle impulse to the MOV material appears to have no lingering effect on the disks (i.e. does not degrade the disk from the surge).

But when there is a defective disk, this effectively causes it to fail. Although Professor Hinrichsen warns not to run out and start specifying this type of test until all the data is in, I’m still excited about the impact this research can have on the arrester industry. As we enter the 1000 kV era of transmission, the number of disks needed for an arrester increases dramatically.

A more effective means of separating out disks of only marginal quality is essential to assure high reliability.

Grading Ring Design We are learning that arresters without grading rings will indeed have hotter and cooler sections than arresters equipped with properly designed rings. However, much to the surprise of experts, the result of pushing the arrester beyond its thermally stable limit is not much different between a well-graded arrester and an ungraded arrester. Prof. Hinrichsen reports that his team will soon be modeling this with a sophisticated non-linear electro-thermal simulation tool. Imagine the space savings during installation and shipping of a 1000 kV arrester with small grading rings that grade the arrester just enough to provide corona suppression and no flashover issues during switching surge impulses.

Thermal profiles of high voltage arresters with various grading ring configurations.

Disk Ageing Several arresters that have been in service for 20 years have been tested to determine if ageing has had any effect on energy handling capability. Results so far show that there is very little ageing effect on MO type arresters. In one sample, there was a difference, but it appears not to have been related to age, but rather to initial manufacturing issues. To date, disks from only 10 arresters have been tested and it is hoped that more can be added to the database. In this regard, the CIGRE Team is looking for 1990 vintage MO type arresters that have seen years of service and which could be made available for this experiment. If you know of and can donate such units, please contact me.

Jonathan Woodworth Jonathan.Woodworth@ArresterWorks.com

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What Impact on MV & HV Accessories of “Green” New Cable Insulation?

The new generation of cable insulation material, presented for medium voltage cables at CIRED 2011 in Frankfurt and during Jicable 2011 in Paris, holds the promise of being a truly ‘green’ compound. For example, compared to conventional XLPE insulation, it apparently offers a reduced carbon footprint of more than 50%. There are also remarkable water and energy savings when it comes to its production process.

Table 1: Electrical Properties of MV & HV Cable Insulation Materials

Volume resistivity Loss factor

The operating temperature of HPTE is 110°C versus 90°C for XLPE while the critical temperature level is 130°C compared to 105°C. In the case of low temperatures, the material becomes more refractory than XLPE, which could create problems during winter.

Can existing medium voltage accessories be used on the new cable?

Fig. 1 illustrates one type of cable construction for the new material. In this case, the screen is a laminated aluminum foil and the cable is ‘radial watertight’. The manufacturer claims that the resistance of the insulating material against water treeing is at least the same as that of conventional XLPE.

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EPR

XLPE

HPTE

Ohm cm

1015

1015

1016

1016

10-3

3 to 9

5

< 0.4

0.25

–

3.5

3

2.3

2.3 + (0.1-0.3)*

transformation under mechanical compression.

Furthermore, the thickness required for insulation in HV applications would result in greater stiffness using HPTE. Combined with increased brittleness under low temperatures, the new material may not be as suitable for HV cables as is XLPE, in spite of its intriguing environmental benefits.

Professor Klaus-Dieter Haim University of Applied Sciences Zittau/Görlitz, Gemany KDHaim@hs-zigr.de

a Fig. 1: One possible construction of HPTE cable.

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Paper

The exciting new material is a polypropylene thermoplastic very very very elastomer, developed by Prysmian and already tested for Electric strength – good good good good a few years in applications from 10 kV to 36 kV in Italy and the Netherlands. Since this is a newly developed * according to modified PP polypropylene cable insulation, its acronym, according to its manufacturer, should be HPTE (High Performance All this suggests that existing types of joints and terminations (i.e. for the cable shown in Fig. 1 with special Thermoplastic Elastomer) instead of PP. earthing device) can be equally applied to the new Let’s focus on some of basic questions in regard to HPTE: insulation material. Moreover, the resistance of HPTE to oil, grease and chemicals meets required conditions What are its advantages and disadvantages for the application of heat-shrink slip-on or cold-shrink compared to XLPE and EPR? accessories – even for transition joints to paper-insulated Table 1 compares some basic characteristics of alternative cables. So, the answer to the above question is clearly ‘yes’. cable insulation materials. From this, it can be seen that there are no major differences between XLPE and the Is application of HPTE to high voltage cables new HPTE. One interesting point still to clarify, however, is foreseeable? comparative long-term behavior in the presence of partial In Fig. 2 b, the white colour just after cutting is a discharge activity. characteristic phenomenon indicating structural

F

CUS ON CABLE ACCESSORIES

Dielectric constant

Unit

b

Fig. 2: Sectional view of HPTE insulated conductor: a) smoothed after cutting; b) just after cutting.

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Plug-in Solutions for Medium & High Voltage Applications Air is the oldest and still most widely used insulation material in high voltage applications. Since introduction of other insulation including oil and SF6, however, a growing number of HV applications are being integrated into housings filled with these materials. Pluggable cable accessories are a perfect example of this trend and were developed to allow

easy connection to such integrated devices while at the same time keeping the device separate from the application itself. This overview, contributed

by Alexander Eigner and Christoph Lederle of TE Connectivity, discusses plug-in solutions now being used to connect medium and high voltage apparatus to power cables.

Modern plug-in systems consist of basically two main components: the insulator or bushing and the plug itself. The bushing provides the insulation containment of the equipment (e.g. the switchgear) and keeps the insulation gas in a separate vessel.

Consequently, it has to be able to withstand the pressure of the insulation gas while also transfering the power. Moreover, the defined interface of the bushing and the electrical element of the plug part must provide the insulation performance required.

connection between cable, bushing and separable connector.

The plug part of the system is made up of components typically found in almost every cable accessory, i.e. an electrical connection, a stress control element and the insulation body.

Electrical contact between the cable conductor and the bushing is then provided by the mechanical connection with the bushing, which is the link to the live part of the apparatus.

High Voltage Plug-in Solutions

In the case of HV applications, the overall arrangement remains similar to what is used at MV except that the insulator is limited to the inner cone version. The outer shape of the insulator is defined within IEC 62271-209 such that the system can be used in any application that complies with this standard (e.g. switchgear, transformer, back-to-back configurations, etc.). The inner shape, which is the counterpart of the stress control element, is however not defined. That means that the insulator and plug-in part basically have to be supplied by the same manufacturer but can still be changed ‘as a system’.

Moreover, this standardization allows for not only connection of power cables but also different applications such as blind plugs, test connectors and other apparatus.

High and medium voltage

plug in solutions Stress control systems these days are usually based on insulating and From the perspective of cable crossconductive silicones. The deflector section, there is no longer any within the plug body controls the practical limit and all existing HV electric field by means of shape and power cables up to 2500 mm2 can be capacitance whereas the surrounding connected. But at such large crosssilicone provides the required sections there are very demanding insulation thickness according to the technical requirements on the operating voltage. The combination of compressive force and method of connection. Mechanical shear bolt technology is silicone allows superior operating performance and also leads best suited to deal with such requirements and is therefore the to an oil-free connection. current standard for plug-in solutions. A typical application is gas insulated switchgear that benefits from the fact that Medium Voltage Plug-in Solutions switchgear and cable can easily be connected yet remain There are two widely-accepted and standardized bushing separable, thus enabling a pre-test of each according to its designs – outer and inner cone – each having its own own requirements and standards. Dry plug-in solutions are advantages. For example, the inner cone system normally therefore now replacing old wet type equipment terminations. provides higher mechanical stability whereas the outer cone system offers greater flexibility for installation on different Summary cable constructions. Plug-in type bushings are used for liquid Power demand is increasing worldwide yet existing installation filled transformers and all other types of medium voltage space remains the same. This leads to higher requirements systems with the relevant standards for these applications when it comes to power density of grids and associated electrical connections. Separable plug-in solutions are being EN 50180 and EN 50181. increasingly becoming established in distribution and In recent years, the Type C outer-cone bushing has become transmission applications to meet this challenge. This is the most common connection on distribution networks. because of the benefits offered compared to standard air Increasing energy density on such network has required or oil-insulated terminations and unscreened separable some modification to extend the range of this type of connection systems. Moreover, there is an ongoing evolution bushing from 630 A to 1250 A rated current. As a result, the of these plug-in solutions and modern separable connection separable connector must be designed to cope with this new systems offer much higher performance to meet the growing requirement so as to avoid becoming the ‘bottleneck’ of the requirements of present-day power grids. 

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UTILITY PRACTICE & EXPERIENCE

Moroccan Power Utility Adjusts Priorities to New Network Challenges

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With annual growth in electricity demand now standing at almost 10 percent, Morocco’s Office Nationale de l’Electricité et de L’eau Potable (ONEE – formerly known as ONE) faces quite different challenges from those of past years. For example, as a result of a sustained program (PERG) devoted to global rural electrification that began in 1995, the country has become among the most successful in the developing world in terms of bringing electrical energy to its far-flung rural communities. Similarly, stone-throwing vandalism – once a scourge on the network – has been reduced by 80 percent through selective replacement of glass cap & pin strings by composite insulators.

13 centuries ago. A second double interconnection project was completed in 1988 and 2009 to eastern neighbor Algeria, which itself is now also connected to Tunisia.

At the same time, ONEE has implemented important international interconnections. Two 400 kV lines, the first completed in 1997, the second in 2006, transmit power across the narrow Strait of Gibraltar – known in antiquity as the fabled Pillars of Hercules. These seven subsea cables (which include one spare) form a 12 km ‘sea bridge’ between Europe and North Africa and re-unite distinct cultures that first mixed

INMR Contributor and External Insulation Specialist, Raouf Znaidi meets ONEE management, engineering & operations staff to report on these and other issues.

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Today, challenges still face the ONEE but now relate more to its rapid demand growth and its highly diverse service environment that straddles two lengthy coastlines. Another increasing concern is how to minimize outages related to short circuits triggered by large birds such as storks.

Moreover, Morocco’s growing dependence on composite insulators has made it necessary to find ways to effectively monitor their condition.

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Photos: ONEE & Raouf Znaidi

Bardach.

Significant new T&D projects still lie ahead.

Power System Environment & Demand Growth

Based on its geography, most of Morocco enjoys a moderate subtropical climate. In the interior, however, temperatures can vary greatly, with cold rainy winters and summers that are dry and hot. In the Atlas Mountain Range, temperatures routinely drop below zero while, at the edge of the Sahara, it is dry and sometimes also bitterly cold.

Mean relative humidity over a typical year is about 78 percent. Annual precipitation averages 423 mm in the north but is negligible in the south.

Abdellatif Bardach is ONEE’s Central Director of Transmission and now also serves as Vice President of ‘MedGrid’ – a multi-national project established in 2010 to develop an electrical network that would provide North Africa and Europe with up to

20 GW of renewable energy, mostly from solar. He explains that demand for electricity in Morocco has increased steadily over the past years with projected shortterm growth in the range of 9.7% annually. Based on this, he expects current demand to double by 2020 and virtually quadruple by 2030.

To cope with such explosive growth, ONEE’s has launched an ambitious capital investment program that aims to expand the existing

Projected Changes in Energy Source at ONEE 2010 versus 2020 Hydro.

Figure 1: ONEE network.

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Oil

Gas

Wind

Solar

2010 27.9% 28.2%

27%

13.4%

3.5%

0

2020

10%

21%

14%

14%

14%

Coal 27%

Figure 2: Projected growth in transmission and distribution at ONEE.

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Almost 98 percent of Morocco’s rural settlements now have access to electricity – versus less than 20 percent in 1995.

Table 2: Global Rate of Rural Electrification 1995 to 2011 1995 2000 2002 2004 2006 2007 2009 2011 %

18

45

55

72

88

6677 MW of installed generation capacity to at least 13,000 MW by 2020. Moreover, Bardach indicates that this will be accomplished mainly through greater reliance on renewable energy sources, which by 2020 are together forecast to contribute 42 percent of total capacity.

96.5

97.4

21,548 km of transmission lines with 240 substations and more than 196,700 km of distribution lines. These include the dual interconnections with Spain and Algeria at 400 kV and 225 kV respectively”. Bardach and Fafouri For example, Brahim Fafouri, point to the success in bringing Division Head within the Central Transmission Directorate, reports electricity to over 32,000 dispersed rural communities and settlements that the budget allocated this past year to grid infrastructure has already across Morocco as one of the most visible results of similar investment resulted in a notable expansion initiatives undertaken over the past of the system. “As a result,” says Fafouri, “ONEE now operates over 15 years. “a number of new projects will be undertaken with the equivalent of Euros 2 billion allocated to expanding our grid and building new substations”.

Photos: ONEE & Raouf Znaidi

Bardach also explains that another key investment goal will be to further develop the country’s existing transmission infrastructure. “As during this past year,” he says,

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Morocco has been one of the most successful countries in the developing world in terms of bringing electricity to its many scattered settlements and villages.

Stone-throwing vandalism affecting glass strings in regions such as Kenitra was a huge problem during the 1990s.

Severe corrosion on hardware of 60 kV glass cap & pin disks due to aggressive service environment.

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The policy at ONEE for composite insulators is that these must be dimensioned to have the same specific creepage distances normally specified for glass strings.

ONEE Transmission System

Morocco has become a leader in North Africa in terms of service experience with composite line insulators.

The overhead transmission system in Morocco operates at 400 kV (1413 km), 225 kV (8389 km), 150 kV (147 km) and 60 kV (11,590 km), with the 400 kV network having undergone the most rapid development in recent years. Says Abdellah Mdarhri, Director of Engineering and Transmission Projects, “beginning in 1996, ONEE decided to expand this system and has already built hundreds of kilometers of new lines, dimensioned for 400 kV but which are still mostly being run at 225 kV. In the process, our operations staff and linemen have been gaining valuable experience in terms of maintenance issues such as insulator inspection, replacement and live line washing.”

Table 3: Annual Outage Rates/100 km in Morocco – 225 kV and 400 kV Systems 2006

2007

2008

2009

2010

2011

Up to Sept.

2012

225 kV

2.44

2.69

2.33

2.30

2.85

2.44

1.55

400 kV

0

2.67

0.23

0.60

0.28

0.14

0

As in other countries in the Maghreb, glass has traditionally been the dominant type of insulator specified on the Moroccan overhead transmission network. Porcelain, on the other hand, has been exclusively reserved for substation insulation. However, during the 1990s there was an epidemic of vandalism during which it was not uncommon to discover all 24 glass discs on a single 400 kV string shattered by rock-throwing. In some of the most affected regions, such as Kenitra, this resulted in outage rates as high as 12/100 km/year.

Today, this problem has been substantially reduced through the application of composite insulators.

According to Mohamed Mouchtakiri, System Operations Director, in the process ONEE has become a leader in North Africa in terms of numbers of such insulators installed and cumulative service experience with this technology. Regarding insulation level and coordination, the policy at ONEE for composite insulators is that these must be dimensioned to have the same specific creepage distances normally specified for glass strings.

Figure 3: Changes in annual outage rates on 225 kV and 400 kV lines – 2006 to 2012.

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Indeed, since 2008, ONEE’s external insulation strategy has been that new overhead lines at all voltage

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levels – including 400 kV – will be insulated mainly with composite insulators, especially in polluted areas or where there have been historic problems with vandalism. Mouchtakiri indicates that this policy has proven highly successful since it has resulted in improvements in almost all key performance indicators.

For example, yearly outage rates per 100 km on the Moroccan transmission network have declined to as low as 0.14 and 2.44 on the 400 kV and 225 kV systems respectively while average interruption time has also fallen dramatically.

Regional Transmission Directorate Faces Special Concerns

ONEE’s Northern Transmission Directorate, based in the coastal city of Tangiers, manages the grid in the northwest of the country. Regional Transmission Director, Abdellah Kabiri, explains that the transmission network around Tangiers and Kenitra represents more than half of all Morocco’s 400 kV lines and also 12 and 17 percent respectively of all 225 kV and 60 kV lines.

The region’s pollution is typically classified as very heavy (N4) and even exceptional (N5 and N6) according to zones established by ONEE and is dominated by sea-borne contaminants brought in by winds from the Atlantic. In addition, there are also pockets of agricultural and industrial pollution, especially during the dry season from May to October. To cope with service conditions dominated by such mixed pollution sources, the regional maintenance strategy consists of scheduled live washing twice each year for those lines still insulated with glass strings. Substations, by contrast, are typically less exposed and also better insulated so that washing is performed only once a year – mainly in June or July.

Photos: ONEE & Raouf Znaidi

Porcelain insulation at 400 kV cable termination station for interconnection with Spain has been dimensioned so that washing is required only once yearly in spite of proximity to coastline.

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Figure 4: Trend in average interruption time on feeders (without back-up connection) versus reinforced (backed up) lines at ONEE – 2005 to 2012.

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Photos: ONEE & Raouf Znaidi

Live washing at ONEE relies equally on helicopters and ground-based methods.

Because past problems of vandalism were concentrated in the region around Kenitra, initial operating experience with composite insulators in Morocco was mostly in the northwest region and actually dates back to the 1980s. Indeed, it was the generally satisfactory performance with the first generation of EPDM composite insulators that encouraged ONEE engineers to adopt and expand application of this technology to silicone rubber units.

Says Kabiri, “we moved toward composite insulators in a systematic way, beginning with selective replacement of glass insulators

Photos: ONEE & Raouf Znaidi

Ahmed Hamid, Head of the Transmission Division, reports that, in addition to traditional live washing techniques from trucks, ONEE recently adopted washing insulators using helicopters. Now, after some five-year’s experience with helicopter washing, each method is being used to about the same extent across the network. Regarding their relative efficiency, Hamid notes that, with traditional truck-based washing, a team of 5 linemen typically washes up to 40 glass strings per day while, with helicopters, this jumps to an average of 250 strings per day.

Inspection of E-field along composite insulator checks for any abnormalities.

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Figure 5: Result of investigation of insulator on 225 kV tower show high localized E-field between sheds 30 and 35 as well as between 40 and 45.

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Example of severe erosion on shank of composite insulator.

Photos: ONEE & Raouf Znaidi

225 kV composite insulators (one EPDM and the other silicone rubber) removed during inspection for closer investigation on the ground.

mainly at 60 kV. Then, with a growing body of experience in solving problems with pollution flashover and vandalism, their application was expanded to our 225 kV and 400 kV lines. As a result of this policy, we can state that outages due to vandalism are today little more than an unpleasant memory of the past.”

At the same time, Kabiri points out that, with a continually growing population of composite insulators, it has become important to conduct regular inspections to monitor their condition. “Our main assessment

strategy,” he says, “is similar to what is being done by the ONEE in general and is based on regular monthly inspection of our most important lines. These inspections involve IR cameras as well as electric field diagnostic devices specially designed for testing composite insulators. Together, they allow our staff to detect any degradation, even if not visible, or signs of ageing such as localized hot spots. Any units that are suspect are then replaced and sent for more thorough investigation by our technical team.”

58

Composite

%

Glass

%

400 kV

1920

41

2754

59

225 kV

1772

47

2001

53

60 kV

8650

61

5599

39

Total

12,342

54

10,354

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Figure 6: Result of thermographic inspection of substation in Kenitra.

Line maintenance staff based in Kenitra, to the south, remark on the relative difficulty of inspecting composite insulators in comparison with glass. Says Mustapha Fsihi, Head of Kenitra Transmission and Naima Rayhani Head of Maintenance Services, “with glass cap & pin strings, simple visual inspection was all that was needed to detect shattered glass disks in the field. Unfortunately, no such simple technique is yet available

Table 4: Distribution of Insulator Population Installed in Northern Transmission Directorate System Voltage

Photo: ONEE & Raouf Znaidi

“Ensuring reliable inspection of composite insulators requires a team experienced not only in the general behavior of each design but also sufficiently skilled to be able to correctly interpret the results.”

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Example of outage triggered by electrocution of stork.

for composite insulators, which tend to vary widely in their housing formulations and production techniques.”

of the E-field diagnostic device had identified them as potential problems. Two of these removed insulators (one in EPDM, the other silicone rubber) showed evidence of severe erosion and split sheds. But on the third there was no apparent external sign to prove that this unit was damaged in spite of unusual double peaks in electric field along its surface.

Birds Bring Yet Another Operating Challenge

Apart from dealing with pockets of

very heavy local pollution as well as remnants of past vandalism centered mostly in Kenitra, one of the new challenges in the north of Morocco has been finding ways to deal effectively with populations of migratory birds. Storks, in particular, have become a growing concern as these large birds fly southward from Europe and nest on towers, triggering some 80 percent of outages around Tangiers and more than 60 percent of those affecting Kenitra. Fsihi reports that accidental contact and electrocutions involving storks are

“Identifying any insulators that present a perceived high risk of failure is our main objective,” she explains. “This process will give ONEE more field experience with composite insulators installed on our lines in general and also increase knowledge among our technical personnel involved in their inspection. However, this task is made more difficult by the fact that our various suppliers all have different designs and housing materials. So, it may be necessary to interpret our findings in relation to each specific supplier.”

For example, just prior to the visit by INMR, several 225 kV composite insulators from different manufacturers had just been removed from service after both ground inspection and application

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Photos: ONEE & Raouf Znaidi

Given this, Rayhani believes that ensuring reliable inspection requires a team experienced not only in the behavior of each different design of composite insulator but also sufficiently skilled to be able to correctly interpret the resulting data.

Insulator inspections in Kenitra, says Rayhani, are normally conducted from the ground as well as from the tower and, as in Tangiers, include equipment for infrared thermography as well as for live measurement of the insulator’s electric field.

Examples of special insulator configurations at 60 kV intended to limit accidental short circuit by storks.

Table 5: Installation of Anti-Stork Composite Insulators – 2008 to 2012 Kenitra Region 2008

2009

2010

2011

2012

Total

Anti-Stork Insulator String

178

156

85

60

57

536

Additional Cost/ Kilo (Euros)

27

24

13

9

8.5

82,000

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Photos: ONEE & Raouf Znaidi

Examples of mixed insulators generation on 22KV systems including very old porcelain on 60KV systems.

now among his top local priorities – especially since the resulting outage rate represents the only performance indicator where the Kenitra Division has not met targets established by ONEE’s Head Office in Casablanca.

Says Fsihi, “we have researched a variety of countermeasures to prevent such incidents and protect the birds as well.” For example, since 2008 more than 536 special arrangements of composite and glass insulators strings have been installed at extra cost specifically to protect storks against accidental short circuit.

involves growing application of composite insulators, in most cases supplied from a local manufacturer.

However, one can still find examples of first generation designs of porcelain and glass insulators, still insulating – even under the harsh local service conditions.

Some towers of the existing old 22 kV systems in the northern section of Casablanca, for example, feature four standard disk glass insulators strings, corresponding to an insulation level more generally employed for 36 kV.

and analysis. He feels that all the practical information now being collected across ONEE’s network through ongoing line inspections and research into any failures identified will constitute an invaluable database. This will then assist future maintenance practices and also be helpful to engineers involved in insulator specification for future lines.

Says Bardach, “such a database will ideally also include laboratory investigations, in co-operation with the manufacturers, on expected residual lifetime of the insulators.

This will help us not only by verifying whether the decision to remove them from service was appropriate but also provide an objective measure of the reliability of the various diagnostic tools we are using.” 

Back at Head Office, Cental Transmission Director Bardach emphasises how important it is for the ONEE to have reliable technical information from the field in terms of diagnostics, inspection

External Insulation on 22 kV Systems As on transmission lines, the external insulation of ONEE’s distribution network now also

Table 6: Total Outages/Year by Cause − Kenitra Region 2008

%

2009

%

2010

%

2011

%

2012

%

Storks

36

56

27

29

24

31

23

24

19

18

Pollution

12

19

15

16

12

15

4

4.2

5

5

Bad Weather

6

9

24

25

16

2

22

23

7

7

Unknown

10

15

29

31

26

33

46

48

75

71

Total

64

95

78

95

106

Outage Rate/100km

2.9

4.3

3.5

4.3

4.8

Table 7: Outages/Month − Kenitra Region Cause

Jan

July

Aug

Sept

Oct

Storks

5

10

7

5

Pollution

4

3

2

6

Bad Weather Unknown

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Feb

Mar

April

1

May

June

4 6

5

6

5

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Nov

Dec

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MAINTENANCE

Comparison of Methodologies to Detect Damaged Composite Insulators As the rate of application of composite insulators on overhead lines has spiraled in recent years, accurate methods to monitor them for critical damage (especially internal defects) have taken on prime importance. Apart from the obvious impact on reliability of networks, trustworthy condition assessment is also important to assure the safety of maintenance personnel prior to live-line work.

Unfortunately, no single diagnostic technique has yet emerged that can identify all the possible types of damage that could exist in a composite insulator. As a result, a variety of complementary tools and procedures are typically employed.

Those methods that can be applied in-service are of greatest interest to power system operators since inspections can then be conducted with lines energized.

Photo: INMR ©

In recent years, CIGRE WG B2.03 (now disbanded) and IEEE 15.09.04.01 have both worked toward the goal of issuing a new, state-of-the art summary of the different diagnostic techniques for composite insulators. This overview by STRI’s Igor Gutman, 2012 Claude de Tourreil Memorial Award recipient, discusses these alternative techniques.

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Photos: INMR Š

Two types of damaged insulators removed from transmission lines in western Canada are apparent by visual inspection alone.

Visual Inspection

Visual inspection is still the most common technique being used for assessing the state of composite insulators. It is generally highly effective since many types of surface damage are easily observed during climbing inspections (or even from the ground, a helicopter or bucket truck using binoculars).

A number of practical guides have emerged to assist maintenance staff by providing detailed descriptions of typical defects that can occur along with selected photos of what specifically to look for.

Instrument-Based Diagnostics

IR thermography from helicopters is commonly used to verify the condition of conductor joints along an overhead line. It therefore seems logical to also inspect composite insulators during the same flyover. In fact, experience has demonstrated that IR inspection generally results in a higher detection rate of incipient problems than do other instrument techniques such as UV, acoustic or E-field detection.

Extensive research funded by several participating utilities was conducted in past years and combined laboratory, field and in-service inspection of composite insulators with known internal defects. This work resulted in practical guidelines for IR helicopter inspections that were later verified in Sweden, Norway, Japan and the U.S.

Photos courtesy STRI

During visual inspection, utility maintenance staff must examine the full length of the installed insulator. To make the process easier, the basic design of a composite insulator is divided into regions of interest (see Fig. 1).

Reference tables and profile diagrams are also included so that photos and definitions of interest can be located quickly with respect to any visible deterioration or

damage. Examples of such photos are shown in Fig. 2.

To perform visual inspection, the inspector should ideally be as close to the insulator as possible or, alternatively, employ binoculars or a telescope.

Fig. 1: Basic design schematic of composite insulator assists field personnel during visual inspection.

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Fig. 2: Photos serve as examples of types of damage that can be detected visually.

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under real operating conditions. Nevertheless, there is a need to continue accumulating information and these guidelines recommend: “any polymeric unit showing an internal temperature rise should be replaced and sliced open to verify the extent of internal defects”.

Helicopter outfitted with equipment for insulator diagnostics.

Fig. 3: Evaluation of composite line insulators containing intentionally placed defects by switching impulse.

Fig. 4: Examples of deliberate internal defects used to investigate effectiveness of IR detection (left: tracking mark/ right: channel with conductive moisture).

Moreover, it has also been demonstrated that helicopter-based IR inspection of composite insulators is effective even under cold and windy conditions. This correlates well with experiments conducted on defective insulators at Kinectrics in Toronto, as presented in Fig. 4 (left). Such defects had been basically ‘invisible’ to corona cameras as well as image intensifiers, yet their heat was clearly detectible.

Still, experience with IR detection has not always been consistent. One explanation is that the relative success in detecting an internal problem may relate to the specific type of defect being investigated. For example, some testing involved defects intended to simulate conductive or semi-conductive tracking marks or moisture ingress (as in Fig. 4). In other investigations, however, different internal defects were created through deliberate cracks in the rod or by placing channels between the rod and the rubber that were filled with lightly conductive moisture. Another method to simulate internal defect involved placing a semi-conductive strip of RTV material between the rod and rubber sheath.

Photos courtesy STRI

These defects were clearly detectable from a distance of about 30 m and the resulting overheating was between 2°C and 40°C, depending on type of defect.

In other research, the defects introduced during manufacture were tracking marks, created by 5-10 mA currents on the surface of the rods without primer under humid conditions. These types of defects were also easily detected in the laboratory but the overheating in this case was about 8°C. Fig. 5: Example of visible outer crack, originating from deliberate internal semi-conductive defect after about 2 years in service.

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The effectiveness of IR detection has been confirmed during another program where 39 composite line insulators with deliberately placed internal defects were tested under switching impulses (SI).

Preliminary investigation had shown that 11 of these insulators ‘ran hot’, i.e. displayed elevated temperatures during IR inspection. Subsequent diagnostics using positive SI then confirmed that most were indeed damaged (see Fig. 3). On the other hand, all 22 insulators that ‘ran cold’ successfully passed the SI tests. Based on this work, it was concluded that, for the specific types of defects investigated, IR thermal detection is superior to visual inspection or other techniques.

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Basically, as long as a defect is hidden inside the insulator and produces heating, IR can be considered the most effective diagnostic method. However, once

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photo courtesy Wallace Vosloo, Eskom

the internal defect ‘opens’ and starts to produce corona activity (see example in Fig. 5), ultra-violet diagnostics become preferable.

Light Amplification Devices Night Vision Observations of insulators at night with an image intensifier (normally having a light gain of at least 20,000X) can reveal surface discharges or corona activity. But development of these devices was only a first step in light-amplification diagnostics since power companies prefer to conduct insulator testing during the day. Such devices later appeared on the market as daylight UV cameras or simpler commercially available day or night cameras used for inspecting insulators.

Fig. 6: Example of night/day camera intended to observe animals and birds. Capture of discharge activity by this device.

A recent example came from the utility Eskom in South Africa, where a camera originally intended for observation of creatures was used to detect discharge activity along insulators. This camera, equipped with motion and infrared detectors, automatically starts recording and can therefore also be used to investigate bird-induced outages (see Fig. 6).

Fig. 7: Principle of operation of daylight UV camera.

Fig. 8: Example of detection of defect by daylight UV camera.

Combined UV & IR Vision (Multi-Camera) The multi-camera allows studying electromagnetic radiation emitted in the visual, infrared (IR) and ultraviolet (UV) wavelengths. Together with its low weight (2.6 kg) and portability, the main benefit is the possibility to easily combine UV/visual or UV/ IR images. The device resembles a standard video camera (as in Fig. 9 left) and operates with three 2D light sensors having different spectral sensitivities (IR, UV and visual light) – all combined with electronics for control and suitable optics. Signals recorded are presented as video or still images after processing.

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Photos courtesy STRI

Daylight Vision (UV) Daylight UV cameras allow corona to be identified during the day as well as at night by blocking out sunlight and then superimposing an image of the corona over the object being inspected. Although corona discharges can be seen in daylight, it is impossible to determine their exact location without the ability to overlay the image of the corona over that of the affected insulator or structure. Such cameras therefore employ bi-spectral imaging using a UV beam splitter to divide the incoming image into two. One image is sent through the solar blind filter to eliminate sunlight, then through an image intensifier and a charge-coupled device. The other is sent through a standard video camera. The two are then processed and combined in a mixer, resulting in an image of the corona exactly as it appears on the structure or component under investigation. This makes it possible for maintenance personnel to pinpoint the exact location of corona and take corrective action (see Fig. 8).

Fig. 9: View and principle of operation (right) of multi-camera (UV/IR).

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Table 1: Practical Application of Alternative Diagnostic Techniques in Service Type of Diagnostic Visual IR UV E-Field

Ground Bucket Truck Tower Yes Yes Yes No

Yes Yes Yes No

Yes Yes Yes Yes

Air Yes Yes Yes No

The visible and UV channels have a common line of sight, while the IR channel has a separate aperture.

UV mirrors are used to split and deflect light onto the UV detector. To allow the high level of amplification needed, collected light is filtered to extinguish wavelengths outside the band of direct interest.

The capabilities of the camera for practical measurements in service were confirmed during field tests performed in Sweden by STRI. From these, it was obvious that the camera is a flexible tool facilitating identification of problems that give rise to corona detectable by emitted UV radiation.

At the same time, the IR channel allows identifying problems resulting in an abnormal temperature increase.

Such a camera is recommended more for use from the ground (e.g. for inspecting substations) since helicopter fly-by inspection would likely require more sensitive techniques.

E-Field Measurement Fig.10: Examples of detection by multi-camera (UV/IR).

Top left: porcelain cap & pin insulator with crack near cap; Top right: UV detection; Bottom right: IR detection.

Fig. 11: E-field probe and example of on-line detection of internal defects at STRI’s climate hall.

When a composite insulator is electrically defective, the electric field changes in the vicinity of the defect. A portable, manually operated diagnostic apparatus has been designed for this purpose and is used with the insulator still in service. The principle of operation is based on the AC axial electric field along the insulator. The measurement and recording unit is U-shaped with a mounted field probe. Faulty regions of the insulator are recognized by a noticeable decrease in AC electric field.

Experiments conducted at STRI showed that the E-field probe had a detection rate similar to that of the UV camera and identified most defects located at the fitting. This was also the only diagnostic tool that could clearly detect a ‘floating potential’ defect, i.e. moisture in the middle of an insulator. The E-field probe, however, cannot detect low severity defects near the fitting due to its sled construction that is obstructed by the corona ring. It therefore does not allow measurements closer than about 15 cm (i.e. the first four sheds from both ends) from a fitting equipped with corona rings. EPRI is apparently working to modify the device so as to allow more accurate measurements.

Comparison of Ground/Air Applications Photos courtesy STRI

As shown in Table 1, most diagnostic methods discussed above can be performed either from the ground or from the air.

Fig. 12: Examples of mini-helicopters: (left) controlled by professional pilots; (right) controlled automatically by GPS program.

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Normally, most aerial inspections of overhead lines are performed by helicopters moving at speeds of at least 20-30 km/h. Different power companies employ different techniques, from only fly-by to hovering at the tower. Other flying apparatus, such as small planes, gyroplanes or even dirigibles can also be considered.

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Table 2: Practical Application of Alternative Diagnostic Techniques - On-line/Off-line.

Type of Diagnostic

On-line

Off-line

Visual

Yes

Yes

IR

Yes

No

UV

Yes

No

E-Field

Yes

No

Comparison of On-Line/Off-Line Applications

In order to generate heat (detectable by IR) or corona (observable by UV), the insulator being inspected should be energized. In the case of certain defects (e.g. flashunder) the line might be switched off and not be able to be re-energized due to the failed insulator. In such a case, only visual inspection can and should be performed (refer to Table 2).

A theoretical alternative, as proposed by some in the industry, is to equip insulators with some kind of flashover indicator, e.g. a bright red colored glass insulator with special properties so that it would explode if the E-field along the ‘protected’ composite insulator increases between 20 and 50%.

Diagnostics Before Live-Line Work

A specific of all live-line work (LLW) is that the critical defect size depends on the configuration and maximum slow front voltage value assumed during LLW. Investigations have indicated that conductive type defects of up to about a third of the insulator length are still acceptable in this regard. Moreover, even if such defects were originally internal, they would most likely induce some visible surface deterioration (as in Fig. 5). Therefore visual inspection should always be the first option, even if it could lead to rather conservative conclusions.

at many utilities because of lack of manpower, the same diagnostic methods are generally applied for porcelain as for composite insulators.

Summary

The main diagnostic techniques for detecting defective insulators (especially of the composite type) have not changed for the past 15 years and include: visual inspection and hydrophobicity assessment; IR detection; UV detection; and E-field measurements. While visual inspection and hydrophobicity assessment are already quite well standardized, the other methods rely on experienced professionals, especially when it comes to interpreting results.

There is no single optimal method for the diagnostics of insulators. IR thermography and UV detect principally different physical properties (i.e. heat and enhancement of electric field in the form of corona). A combination of the two or use of a multi-camera will therefore provide maximum data for the remote inspection of composite insulators.

Most of these diagnostic methods are applicable from the ground or from a helicopter used for aerial inspections (or indeed a variety of more exotic aircraft). All methods should be performed when the line is energized, however, in cases where this is not possible, special selfdestructive devices can be considered.

Damaged glass insulators can be easily detected visually, while in the case of porcelain insulators the same basic diagnostic techniques are valid as used for composite insulators. 

Quantitative condition assessment of composite insulators can be performed using UV/IR cameras while E-field measurements can serve to increase the level of information in specific cases. Given this, it should be possible to safely carry out LLW on overhead lines, whether equipped with ceramic or composite insulators.

Applicability Diagnostic Methods to Different Types of Insulators

Diagnostics of glass cap & pin insulators is relatively easy since insulators usually fail by shattering and the damaged stubs can be identified by visual inspection using binoculars. The matter is more complicated for porcelain cap & pin insulator strings. In this case pinholes through the porcelain shell and/or between the cap and the pin cannot be visually identified. Detection of defective units requires diagnostics, such as so-called ‘buzz testing’, E-field measurement, UV or IR detection.

Taking into account that ‘buzz testing’ is no longer in use

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Fig. 13 Example of self-destructing indicator of composite insulator condition for 220 kV.

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INSULATORS

Photo: INMR ©

Forensic Analysis of a Fractured 500 kV Composite Insulator

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Introduction When people think of mechanical failure of a composite insulator, there is a tendency to think only of brittle fracture.

However, recent evidence suggests that the incidence of classical brittle fracture has been significantly reduced through better materials and product designs. Still, other factors such as the inability of the specified insulator to cope with dynamic line stresses or improper molding of the housing over the core rod can also result in fracture-type failures. The features of the failed insulator in this case differ substantially from what is normally seen during brittle fracture.

This contribution was provided by Dr. Bernhard Lutz, INMR Columnist Prof.

GUAN Zhicheng as well as Prof. WANG Liming of the Graduate School of Tsinghua University in Shenzhen and by Dr. ZHANG Fuzeng of the China Southern Power Grid. It deals with the case of a 500 kV AC composite insulator that fractured yet showed none of the characteristics associated with brittle fracture. One of the objectives behind their forensic analysis was to provide test data to allow comparison with any similarly fractured insulators appearing on other networks. Another goal was encourage both manufacturers and power grid operators to focus more on the quality of the critical sheath-core interface to avoid premature interfacial ageing.

By comparison with porcelain or glass, there is still only relatively limited service experience with composite insulators operating at very high voltages. In this regard, whenever a failure of such a unit occurs, it is important to conduct a thorough analysis of the root causes and contributing mechanisms. This is the best way to ensure that product designs as well as manufacturing/ quality control practices by the industry adjust to this information from the field.

The fracture failure in question took place in November 2010 on a composite insulator after 5 years’ service on a 500 kV AC line in Guizhou Province of China – an area of light pollution severity as defined in IEC 60815. Previous inspection of the line using of an IR camera (conducted only some two months before the incident) had identified a minor ‘hot’ spot along this unit located from 1.5 to 2 m from the live end fitting. However, apart from the slightly elevated temperature observed, i.e. ∆T = 1…2 K, there were no other indications of imminent failure.

Photos: Tsinghua University

More infomation on this topic can be found in [1] and [2]

[1] B. Lutz, L. Cheng, Z. Guan, L. Wang, F. Zhang, “Analysis of a fractured 500 kV composite insulator – Identification of aging mechanisms and their causes”, IEEE Trans. Dielectr. Electr. Insul., submitted for publication [2] B. Lutz, Z. Guan, L. Wang, F. Zhang, Z. Lü, “Water absorption and water vapor permeation characteristics of HTV silicone rubber material”, IEEE Intl. Symp. Electr. Insul. (ISEI), paper 023, June 2012

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Figure 1: Fracture location - high voltage portion (top), opposite side (bottom).

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Photos: Tsinghua University

The insulator, with length of 5.315 m and core and sheath diameters of 30 mm and 40 mm respectively, was installed in a double ‘V’ suspension assembly, so there was no line drop since the parallel insulator did not fail nor show any evidence of degradation. The point of fracture was located 300 mm from the live end fitting and the core exhibited regions of darker color. Especially striking was the fact that there were no classic signs of brittle fracture (e.g. smooth planar fracture surface) and that the degraded core showed a degree of porosity. This indicated that an entirely different ageing mechanism was likely involved in this particular failure.

Figure 2: Example of internally initiated sheath punctures before (left) and after dabbing by a needle.

In total, 25 punctures of the sheath occurred along a 1.1 m portion from the high voltage end fitting. About half of these were filled by eroded, porous silicone rubber (SIR) material that dropped off easily after dabbing with a needle. The punctures were the result of an erosion mechanism that probably originated from internal defects.

Photos: Tsinghua University

IR & UV Imaging

Surface Pollution & Hydrophobicity The pollution on the surface of both the fractured and the undamaged parallel insulator of the double string were determined by ESDD and NSDD measurements performed according to IEC 60815-1 (i.e. upper and bottom surfaces of two sheds at three different positions along the insulator: namely near the HV fitting, in the middle and near the ground end). It was found that ESDD and NSDD values on the bottom shed surface near the failed insulator’s live end were some 5 times higher than on the undamaged parallel insulator. Differences in degree of pollution at the middle and ground end portions of the two insulators were significantly less.

Table 1: ESDD, NSDD & Hydrophobicity Class (HC) Along Fractured Insulator & Parallel V String Insulator Position

Insulator

ESDD up/bottom (mg/cm1)

NSDD up/bottom (mg/cm1)

HC up/ bottom

Fractured 0.015 / 0.040 0.285 / 0.487 5/6 Before dismantling and cutting open the fractured insulator HV side for analysis, both IR and UV imaging were performed Parallel 0.010 / 0.008 0.182 / 0.050 5/4 under an AC test voltage of 550 kV/√3 = 318 kV applied Fractured 0.014 / 0.012 0.122 / 0.083 6/3 Middle to the broken end without grading rings. After 5 minutes, part Parallel 0.011 / 0.007 0.048 / 0.046 5/2 areas with higher surface temperature (i.e. ∆T = 2…3 K) Fractured 0.011 / 0.009 0.131 / 0.093 6/3 Ground were observed at a distance of 880 to 1040 mm side from the broken end (Fig. 3 left). At this position, the Parallel 0.012 / 0.009 0.040 / 0.026 2/2 insulator also exhibited sheath punctures from which corona activity was clearly detectable (Fig. 3 right).

The explanation for this, given two identical insulators installed in close proximity to one another, could be the enhanced electric field strength on the failed unit due to conductive internal defects located near the fracture point. In environments with little wind exposure, enhanced pollution deposition is known to occur in regions of high electric field due to the dielectrophoretic forces acting on airborne particles.

Figure 3: Temperature distribution (left) and corona sources (right) along the fractured composite insulator under 318 kV AC test voltage.

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These findings confirm the presence of conductive interfacial defects having a length of almost one meter that shifted the high voltage potential toward the ground end. Moreover, the electric field strength was high enough to initiate corona discharges at sheath punctures located far from the HV side fitting. The presence of these conductive interfacial defects was confirmed by measuring DC resistance between different puncture points using a multimeter. Resistivity values obtained fell within a range of 1 MΩ to 120 MΩ, the lower range measured at shorter distances between the punctures.

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The hydrophobicity class (HC) at different positions was then determined using the spray method according to IEC TS 62073. No significant differences were found in HC values on the upper shed surface at the HV side of both the fractured and the parallel insulator. However, the failed insulator’s bottom shed surface was found to

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be almost completely hydrophilic (HC 6) – likely the result of the high pollution at this position.

Removal of Sheath Removing the SIR sheath after cutting was fairly easy since almost no adhesion remained between the sheath and the core rod. Nevertheless, some residue of core material was stuck to the concave sheath surface, indicating that the mechanical strength of the FRP core material (i.e. of the microscopic interfaces between the glass fibers and the resin matrix) had degraded.

The results of this investigation emphasize the importance of good adhesion between sheath and core of composite insulators in determining their long-term service performance.

Black spots could be observed around the puncture area on surfaces of both the concave SIR sheath and the core. Furthermore, some regions of the core’s surface exhibited the same porosity and similar dark color as the fracture point and these spots were rather conductive (R < 100Ω). Similar degradation of the interface could also be found when dismantling more punctured portions of the insulator. Since conductive interfacial defects can trigger sheath cracks and punctures, those observed along the portion of 1.1 m from the HV end were probably initiated by a growing internal track.

Figure 4: Sheath puncture (left) and degraded interface area around LV side of puncture (right).

Removal of the SIR sheath at non-punctured portions of the insulator revealed further regions with weak adhesion (see Fig. 5). However, this time there were no blackened and colored spots, nor residues of the core material on the concave sheath surface. This indicated that it was the macroscopic sheath-core interface that was weak rather than the microscopic glass fiber-resin matrix interfaces.

Standardized Tests on Core Two standardized tests were carried out on the core material, i.e. the dye penetration test and the water diffusion test according to IEC 62217.

Figure 5: Areas of weak adhesion between sheath and core. 3.9 m from fracture point (left), 1.2 m far from fracture point (right).

Three degraded as well as three non-degraded core material samples were cut from different parts of the fractured insulator. The degraded material was obtained from a sheath puncture area some 800 mm from the point of fracture while the non-degraded material was cut from the insulator’s ground end. Not surprisingly, the degraded core samples did not pass the dye penetration test. Indeed, after only 3 minutes the dye had reached the upper surface (see Fig. 6), penetrating rapidly through capillaries within the darkened portion of the core due to degradation of its microscopic interfaces.

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Photos: Tsinghua University

Dye Penetration Test

Figure 6: Degraded core material 3 min after start of dye penetration test.

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Table 2: Water Diffusion Test On Core Material* Sample Number

Position

Sheath Removed?

Current after 1 min (mA)

1

middle

yes

0.024

2

middle

yes

0.027

3

middle

yes

0.025

4

ground end

yes

0.024

5

ground end

yes

0.025

6

middle

no

1.087

7

middle

no

1.718

8

middle

no

1.278

9

ground end

no

>2

10

ground end

no

1.818

All non-degraded core samples passed the test such that no dye was visible on their surface after allowing 4 hours for possible penetration to occur. Failure of the degraded core material in the dye penetration test confirmed the presence of degraded microscopic interfaces 800 mm from the point of fracture.

Water Diffusion Test A total of 10 samples were cut from the failed insulator. The SIR sheath of some samples had been removed for the tests in order to compare the results with samples with the sheath still attached. The location of the cutting was chosen randomly in the middle and ground end portions of the failed insulator.

Results after boiling in water for 100 h according to IEC 62217 are presented in Table 2.

Leakage current through samples with the SIR sheath exceeded 1 mA and these therefore failed the test.

By contrast, samples without the sheath had leakage currents between 0.024 and 0.027 mA and therefore passed. These results confirm the weak adhesion at the sheath-core interface that had already been observed when removing the sheath and which played a critical role in the entire degradation process.

* With and without sheath cut from different positions of the fractured insulator

Scanning Electron Microscopy Test samples made up from different parts of the core material were produced by turning with a lathe or cutting with scalpels. These methods generated 1 mm thick core disks as well as colored (degraded) and white (non-degraded) core material directly from the fracture point respectively (see Fig. 7).

Figure 7: Degraded (left: 850 mm from fracture) and nondegraded (4.4 m from point of fracture) parts of core.

Photos: Tsinghua University

Figure 8: SEM image of degraded part of core cut from a position 850 mm from fracture point (view parallel to glass fibers).

Figure 9: SEM image of degraded (left) and non-degraded (right) core material (view perpendicular to glass fibers).

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The dark spots at the degraded core sample (see Fig. 7) indicate interfacial degradation along the glass fibers but are not present along the non-degraded core.

It is noteworthy that interfacial degradation of the insulator progressed during service to core sections some distance (i.e. 850 mm) from the fracture point before failure occurred. These dark spots could also be identified using SEM as areas with higher erosion around glass fiber bundles (see Fig. 8). In the case of the degraded core, the surface roughness and porosity of the glass fibers appeared higher than on non-degraded material (see Fig. 9). Moreover, a large proportion of fibers in the degraded core became exposed to the environment while fibers within nondegraded core material remained embedded in the resin. These SEM results confirm that the microscopic glass fiber-resin interfaces were severely degraded and this progressively reduced the mechanical strength of the insulator core until fracture finally occurred.

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Chemical Analysis In order to better understand the interfacial degradation mechanisms observed in this incident, chemical analysis of the core material was performed using Fourier Transform Infrared (FTIR) spectroscopy.

The transmission of light versus wave number w in cm-1 was plotted (a transmittance unit of 1 represents no absorbance of light with the wavelength 1/w).

An FTIR analysis of degraded (samples #2 and #3) and non-degraded core material (sample #1) was performed. The spectral curves were then normalized to the same base so that peaks could be directly compared and allocated to different concentrations of molecular groups having different degrees of light absorption. The following conclusions can be drawn, based on results:

Figure 10: FTIR spectrum of non-degraded (white) and degraded (colored) core material at fracture location.

Table 3: FTIR Transmittance Peaks & Wave Numbers* Absorbing Group

Wave Number (cm-1)

Transmittance Peak Unit #1

#2

#3

Si(OH)4

472-475

0.99

0.96

0.63

HNO3

1385

0.99

0.96

0.86

C=O

1627-1638 1736

0.97 0.98

0.96 0.93

0.92 0.90

-CH2 + -CH3

2920-2932 2962-2970

0.98 0.98

0.97 0.96

0.96 0.95

-OH

3440-3500

0.92

0.93

0.81

* for non-degraded and degraded core material cut from the fracture location, #1: white core material sample cut from live portion, #2: colored core material sample cut from live portion, #3: colored core material sample cut from ground portion

1. The degraded core material exhibited a higher concentration of silicic acid Si(OH)4 as indicated by decreased transmittance at 472â&#x20AC;Ś475 cm-1. This most probably resulted from glass corrosion and ion exchange processes at the microscopic glass fiber-resin interfaces â&#x20AC;&#x201C; mechanisms which both loosen the microscopic interface structure and require the presence of water.

The latter mechanism is due to the replacement of metal anions in the glass fibers (e.g. Na+) by previously dissociated hydroxyl ions (OH-). Glass corrosion results from diffusion of water into the glass surface with subsequent breaking of the Si-O-Si bonds.

2. The degraded core material also exhibited a higher concentration of nitric acid (HNO3) as seen from decreased transmittance at 1385 cm-1. This likely resulted from partial discharge (PD) activity in combination with absorbed moisture as well as ozone generation.

3. The degraded core had a higher concentration of carbonyl (CO: 1627-1638 cm-1) and hydroxyl groups (OH: 3440-3500 cm-1) as well, probably resulting from hydrolysis of the resin material due to absorbed moisture.

It is important to note that all the above mechanisms require the presence of water and lead to degradation of the microscopic glass fiber-resin interfaces. Failure of this composite insulator was therefore triggered by moisture that became present within the core material as well as the core-sheath interface.

Figure 11: TG curves for degraded sheath material scratched of a puncture (#5) and non-punctured sheath material (#6).

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Thermal Analysis Thermal analysis of degraded and non-degraded sheath material was done using thermogravimetry (TG).

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Non-degraded sheath material showed two expected phases of weight loss (see Fig. 11) due to dehydration processes of the aluminum hydroxide Al(OH)3 filler.

A similar loss of weight, however, did not take place in the case of the degraded (i.e. already dehydrated) material scratched from near the sheath puncture. This confirmed the assumption that the sheath punctures were caused by thermal degradation and internally initiated tracking and erosion during service. External sources of puncture, e.g. lightning stroke or flashover, could therefore be excluded.

Photos: Tsinghua University

Degraded material was scratched from inside a sheath puncture (sample #5) while non-degraded material was obtained by cutting a portion of sheath along a nonpunctured region (sample #6).

Figure 12: Permeation test set-up.

Water Vapor Permeation of the Silicone Material The water vapor permeation property of HTV silicone rubber material was also investigated during the forensic analysis since water ingress played a major role in terms of ageing of the core material. Newly manufactured HTV silicone rubber disks with a thickness of 1 mm were used as samples representing the same material as the sheath of the fractured insulator. These samples were used as lids for glass cups by gluing them on the aperture with a viscous impregnationgrease (see Fig. 12). The glass cup contained a packet of drying agent in order to maintain constant relative humidity below 3%. The RH and the temperature were monitored continually during the experiment.

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No defect present

Water absorption in sheath and core Material quality

The amount of permeated water vapor Q(t) was determined regularly after starting the test by measuring the weight of the drying agent in the cups. From Fig. 13, it can be seen that the amount of permeated water Q(t) increased linearly over time at different RH values and that the slope of the curves and thus the rate of permeation dQ(t)/dt decreased with the relative air humidity. The rate of permeation dQ(t)/dt could then be used to calculate the permeation coefficient (P) which characterizes the water permeation behavior of the HTV silicone rubber material.

Rainy or humid period Defect present

The glass cups were placed in plastic boxes including different salt solutions to adjust to constant relative humidity (RH). An almost constant RH gradient between the surroundings and inner volume of the glass cups was thus established, causing continuous permeation of water vapor through the HTV samples and along the glued contact surface, respectively.

Using a second glass cup, this time with a glass lid, it was determined that permeation rate along the glued contact surface was negligible.

Figure 13: Amount of water vapor Q(t) permeating through 1 mm thick HTV SIR disks at different relative humidity (RH), T = 296 Âą 3 K.

Water vapor permeation into air filled defects + condensation

Water Induced defect formation

Hot spot formation due to enhanced conductivity and current density

Sheath splitting by temperature stress and partial discharge activity

Core exposure to environment (initiation of further aging)

Sheath puncturing and growth of interface defects by tracking and erosion process

Figure 14: Flow chart of water induced ageing process.

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A P value of 1∙10-7g cm-1s-1cmHg-1 could be assigned to the HTV silicone rubber material tested at relative humidity greater than 60%. Since this value exceeds the permeation coefficient of glass fiber reinforced resin by six orders of magnitude, water vapor permeates much faster through the HTV silicone rubber material examined than through the fiber reinforced plastic (FRP). In the case of SIR materials with high permeation coefficients, the insulator sheath cannot be considered a significant barrier against water vapor permeation.

This may be particularly critical for any insulators with internal defects, such as weak sheath-core adhesion.

Discussion of Results The results of the analysis reveal that the fractured insulator exhibited weak sheath-core adhesion and that subsequent degradation mechanisms were accelerated by the presence of water. Both findings proved decisive in terms of explaining the initiation and progression of insulator ageing.

Water can penetrate inside composite insulators either in the liquid or vapor state. During rainy seasons, liquid water accumulating on insulator surfaces first enters the SIR sheath through a diffusion process. However, due to the relatively slow water diffusion process in FRP materials (compared to SIR), the amount of absorbed liquid water is normally too small to initiate severe degradation of the core. Still, if core materials and coupling agents are used that are prone to hydrolysis or if silicone rubber housings have greater water absorption characteristics, long-term degradation of the sheath-core interface due to the presence of water cannot be excluded.

Absorbed water can further accumulate within internal defects such as voids, cracks and air gaps, thereby creating localized regions with higher electric conductivity and dielectric constant. During humid seasons and in the presence of such defects, water vapor permeation through the silicone rubber sheath will be more critical in initiating the degradation processes than water absorption. Consequently, air filled defects at the sheath-core interface or inside the core can become filled with water vapor rather quickly and which then becomes prone to condensation.

As soon as the defects (particularly in regions of high electric field) have been wetted, the degradation process will proceed according to the schematic shown in Fig. 14, namely: 1. Hot spot formation 2. Sheath splitting 3. Sheath puncture and defect growth by tracking and erosion processes 4. Core exposure to environmental factors, e.g. rain or acids and acceleration of ageing until the point of fracture.

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This process emphasizes the important role of the sheath-core interface when it comes to the long-term service performance of composite insulators. The fractured insulator studied in this analysis exhibited regions with weak sheath-core adhesion from which sheath splitting and puncturing were triggered by water ingress. Indeed, the vulnerability of composite insulators to sheath splitting where there are weak sheath-core interfaces has already been demonstrated with samples that included intentionally placed defects.

After sheath splitting and puncture, further ageing occurs due to exposure of the core to environmental factors. Degradation of the core material by corrosion, ion exchange and hydrolysis as well as by interfacial tracking can then proceed until the point where fracture of the composite insulator finally occurs.

Conclusions In this contribution, a fractured 500 kV (AC) composite insulator with fracture characteristics different from brittle fracture was analyzed by optical, chemical, thermal and standardized methods. The mechanical strength of the core material was degraded by water induced ageing processes, i.e. ion exchange, glass corrosion and hydrolysis. Interfacial tracking at microscopic (glass fiber-resin) and macroscopic (sheathcore) interfaces was identified as a further degradation mechanism.

The origin of the failed insulator’s degradation process is assumed to have been the relatively weak adhesion detected between its sheath and core – making it especially prone to water accumulation by water vapor permeation and subsequent condensation. The observed sheath punctures and interface tracks consequently developed from sheath splitting caused by partial discharges and localized heating (hot spots) near wetted defects at the sheath-core interface. Once sheath puncture occurred, further water induced ageing of the thus exposed core could only accelerate.

The results of this investigation emphasize the importance of good adhesion between the sheath and core of composite insulators when it comes to their long-term service performance. Further research on nondestructive on and offline detection of weak sheath-core adhesion is therefore required.

In order to address the ageing process identified above during routine online monitoring, it is recommended focusing on the detection of hot spot phenomena with IR cameras during or after rainy and humid seasons.

Insulators exhibiting any hot spots and sheath punctures should then be replaced as soon as possible. 

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Raw Materials Play Role in Performance of Electrical Porcelain Most power engineers are familiar with porcelain as an outstanding insulating material used for over a century in myriad overhead line and substation applications. What is much less known, however, is that the performance of electrical porcelain depends as much on the raw materials that make up its mass as it does on maintaining a well-controlled manufacturing process. Too often, there is the perception that these materials are little more than ‘common dirt’ when, in fact, their composition and physical parameters must be tightly regulated and monitored from the moment they are extracted from the ground.

INMR meets with experts at Imerys – the Frenchbased industrial minerals giant and one of the world’s major suppliers of specialized raw materials, including ball clays, for the porcelain insulator industry – to examine the important role that raw materials actually play.

Photos: INMR ©

Ball mills (top) are the starting point for mixing the raw materials into homogeneous watery slurry. After filter pressing into cakes (center), air is removed from the mass under vacuum in a pug mill where desired electrical and processing properties are created (bottom).

Given its extraordinary lifetime, it seems only fitting that the origins of porcelain should be in the distant past.

Indeed, the ball clay that makes up a large proportion of a porcelain insulator’s mass is the result of natural forces that have been at work since the Earth’s Eocene Period – some 45 million years ago. Over the millennia, sediments from kaolinite-rich rocks, washed down from hills and were trapped in areas such as coastal deltas where they settled and accumulated underground – only awaiting discovery and extraction.

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According to Neil Mifflin, Technical Manager in charge of the quality control laboratory at the UK Ball Clay Operations in the county of Dorset, the confluence of all these conditions is quite rare in the world and accounts for the scarcity of high quality ball clay deposits. He goes on to note, however, that this area of southern England has long been known to contain ball clays with properties considered ideal for applications in the ceramics industry. In fact, the region was mined as far back as Roman times and during the 1700s rose to prominence

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When it comes to electrical porcelain used in HV line and equipment insulators, the required attributes of ball clay are quite demanding.

Ball clay being mined at quarry in Dorset.

by supplying raw materials to Josiah Wedgwood, a pioneer in the production and technology of ceramics.

The term ‘ball clay’ apparently also has its roots in history since the malleable material was originally sold in the form of small cubes, which during handling became ever more spherical.

Given such considerations, it is not unusual that a quarry used to supply ball clay for certain ceramic applications might not be considered ideal for others.

For example, Mifflin notes that Povington Pit is well suited to meet the special needs of electrical porcelain as well as refractories and tiles, whereas nearby Imerys quarries in Devon supply ball clay mainly for sanitary and table ware.

Eugen Alexa is responsible for Imerys sales of raw materials to the world’s ceramic insulator industry.

He reports that porcelain’s high mechanical and dielectric strength combined with its inertness to the environment have long made it the preferred electrical insulating material. Still, Alexa explains that the specific composition of electrical porcelain can vary significantly depending on application, with a number of categories of porcelain, including C110, C111, C112, C120, C130 and C140. C110 is mainly clay rich in silica (SiO2) whereas C112 contains cristobalite, an SiO2 variant with a different crystal structure. The masses most commonly used for MV and HV insulators are C110, C120 and

Photos: INMR ©

When it comes to electrical porcelain used in high voltage line and equipment insulators, the properties required of ball clay are typically very demanding. Here, the focus is on high strength and plasticity as well as good drying behavior, with minimal presence of organic matter. The importance of good drying can better be appreciated if one considers that most of the production lead time for porcelain made by the classical wet process is dictated by how rapidly the extruded ‘green’ body, with relatively high moisture content, dries to the point where it can be turned on lathes and later fired.

Other required key ball clay parameters include fine grain size and low residue content. Together, all these characteristics allow it to be shaped into large pieces without deformation and fired in a kiln with no release of gases that might cause unwanted porosity in the body.

Moreover, these essential properties must be consistent from one batch to the next. Says Mifflin, “the most important factor for users is that all the critical parameters of the ball clay remain constant. That’s why we must perform quality control at every step whenever anything is done to the clay either while mining or during subsequent processing.”

Porcelain used in critical substation applications such as breakers must have uniformly high mechanical strength.

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Table 1: Typical Proportions of Raw Materials by Type of Porcelain Used for Electrical Insulators* Material

C110

C120

C130

Ball Clay

30

30

30

Kaolin

20

10

10

Feldspar

25

20

25

Quartz

25

20

–

Alumina

–

20

35

Mining ball clay for electro-porcelain requires machine operators to plan from which layers to extract to ensure consistent quality material downstream.

* percent by weight

C130, the latter two having a relatively high content of alumina (Al2O3).

The raw materials components that are key to the shaping processes of porcelain insulators are the ball clays and kaolins. Ball clay is regarded as the most critical of the three in as much as it is the most difficult to source and, if not just right in properties, can lead to a range of problems during production. For example, it should have higher plasticity than kaolin, resulting from its more complex chemical structure, and have particle sizes that measure only some 2 microns across. At the same time, it must have low content of carbon and good drying behavior.

Says Alexa, “the ceramic body is usually prepared according to a strictly followed ‘recipe’ which involves a compromise in the relative amounts of different ingredients to meet such goals as long service life, ease of production or some combination of low cost and sufficient performance.” A typical formulation for the porcelain will contain varying proportions of ball clay, kaolin (for ‘green’ strength and plasticity to allow easier handling), feldspar (a flux that helps sintering in the kiln), and fillers such as quartz, alumina or calcined bauxite (intended to modify properties, such as imparting additional mechanical strength). A variety of secondary materials are also used to facilitate processing including water and additives such as binders, which are burned off in the kiln during firing at temperatures of up to 1300°C.

Photo: INMR ©

Kaolin, like ball clay, is also formed naturally over millions of years and is typically larger in particle size but with lower contamination by unwanted materials such as metal oxides. Ideally, it must be consistent in having high alumina content as well as low levels of free quartz, with a distribution of particle sizes that fall within a narrow prescribed range. Imerys claims to be the world

Shaping porcelain in its ‘green’ state requires high plasticity whereas achieving all desired end properties depends on complete vitrification in the kiln.

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leader when it comes to kaolin extraction and application, sourced from mines as far afield as Brazil, France, New Zealand, Thailand, Ukraine, the UK and the US. Apart from these main ingredients, feldspar (mainly from potassium rich grades) is also present and plays an important role in reducing vitrification of the ceramic body. Potash feldspar is recommended due to its contribution to a lower pyroplasticity, thereby allowing even very heavy insulators to withstand their weight during the critical firing process. To be suitable for this role, the feldspar must be low in sodium oxides.

Extraction of ball clay at Povington Pit planned long in advance, from mapping out deposits to restoring land to its original state.

Finally the porcelain body also contains fillers such as calcined alumina, generally the most expensive material in the formulation, or alternatively lower cost quartz – both intended to increase firing as well as bending strength. Generally, bodies with higher contents of alumina have proportionately less kaolin (see Table 1).

of any metallic impurities. A glaze gives a smooth, non-porous coating that minimizes the adherence of atmospheric pollutants and permits their easy removal by wind and rain. Also, since a glaze is in slight compression over the porcelain, overall mechanical strength of the insulator is increased.

Reviewing all these various raw materials, Alexa notes that the main objective is to arrive at the optimal mix to ensure adequate plasticity and workability of the porcelain body in its ‘green’ unfired state, given constraints associated with subsequent drying and firing. Yet another important factor is achieving a good match in thermal expansion of the body with the applied surface glaze, whose primary functions are protection and increasing the insulator’s final mechanical strength by as much as 30 percent.

According to specialists at the Imerys mine in Dorset, the process of extracting and controlling the physical parameters of such raw materials is more complex than one might guess. In the case of ball clay, for example, identifying deposits and then planning for their extraction is usually measured in decades, not years. Bore holes are sunk into unexploited areas some 50 meters apart and core samples taken to assess their properties in the laboratory. This allows the mine operator to develop an accurate 3-D representation of reserves, showing the location and depth of different types of clays. Moreover, the planning must go all the way through to subsequent restoration since, in places

Photo: INMR ©

Glazes are typically prepared in ball mills or annular gap mills with water and a variety of components including quartz, feldspar, dolomite, kaolin and zircon.

There is also some iron oxide added for color as well as chemicals such as binders and flocculants. They then go through a screening process with magnetic elimination

Chunks of mined ball clay are shredded before mixing and processing in silos to ensure consistent parameters for porcelain manufacture.

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“The key in our business is maintaining product consistency since the porcelain insulator industry wants to be served with consistent materials.”

like England, public authorities require a detailed scheme of how quarries will be returned to their original state after mining. As a result, there is always a balance between extracting only desired materials from the pit with an ongoing program of subsequent re-filling using unwanted materials from what make up the ‘tip’.

Similarly, once extracted and shredded, all clays are carefully analyzed to ensure their composition and properties remain constant. This involves a process where each material sample is tagged with its own I.D. number, dried and milled into powder for subsequent testing. Among the main parameters measured, for example, are surface area and chemical composition.

Modulus of rupture, which involves a 3-point bending test, is also performed to assess mechanical strength, as are firing tests of prepared disc samples with 8 percent moisture content.

Photos: INMR ©

David Heys, a ceramic scientist working at the fullfledged ceramic technology centre in nearby Devon, says “the key in our business is maintaining product consistency from pit to pit since the porcelain industry demands to be served with consistent materials. Even though we are fortunate in that we have consistent components from our mines, we still need ongoing geological expertise to confirm what we are really getting in our ball clays and to interpret any variability.” Heys emphasizes that continuous testing and planning of extraction are both essential in this regard.

Alexandre Sevagen, Ceramic Technologies Manager for Imerys Ceramics echoes this sentiment. “In our business,” he explains, “we try to understand what is key and design our products accordingly. In the case of electrical porcelain, higher plasticity of the clay means a better product and since every layer in our mines offers different quality, we have to extract from each and then mix to achieve the consistency required. In fact, we work at a 20-year level in our planning not only to make sure we always have the right products available for customers but also to be in a position to develop new products.” 

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Ball clay samples from different areas of mine are tagged, dried and milled into powder for testing using techniques such as N2 absorption and X-ray fluorescence to measure surface area and identify relative amounts of components.

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2 0 1 3 BU Y E R ’ S G U I D E & D I R E C TO RY

INDEX

C E N T R A L

96 QUICK REFERENCE CHART FOR PRODUCTS OFFERED

BY SUPPLIERS

99 INDEX OF SUPPLIERS

BY TYPE OF PRODUCT

99

101

101

Suspension Long-Rod Type Insulators Long-Rod Type Insulators - Porcelain Long-Rod Type Insulators - Polymeric/Composite Line Post Insulators Line Post Insulators - Porcelain Line Post Insulators - Polymeric/Composite

101

101

101

Railway Insulators Railway Insulators - Porcelain/ Glass Railway Insulators - Polymeric/Composite Station Post Insulators Station Post Insulators - Porcelain/Glass Station Post Insulators - Polymeric/Composite Switch / Bus Insulators Switch / Bus Insulators (All Materials)

101

Insulators for Arresters Insulators for Arresters - Porcelain Insulators for Arresters - Polymeric/Composite Insulators for Bushings Insulators for Bushings - Porcelain Insulators for Bushings - Polymeric/Composite

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MATERIALS for INSULATORS & INSULATION ENHANCEMENT Coatings/Greases for Insulators Materials & Components for Insulators & Insulation Enhancement

Strain / Guy Insulators (All Materials)

Cutouts Cutouts

CABLE TERMINATIONS Cable Terminations, Porcelain Cable Terminations, Polymeric/Composite

100 Strain / Guy Insulators

Dead-End Insulators Dead-End Insulators - Porcelain/Glass Dead-End Insulators - Polymeric/Composite

BUSHINGS Bushings - Porcelain Bushings - Polymeric/Composite

Pin Type Insulators Pin Type Insulators (All Materials) Spool Insulators Spool Insulators (All Materials)

ARRESTERS Arresters, Porcelain-Housed Arresters, Polymeric/Composite-Housed

ELECTRICAL INSULATORS Suspension Disc Type Insulators Disc Type Insulators - Porcelain Disc Type Insulators - Glass

Insulators for Cable Terminations Insulators for Cable Terminations - Porcelain Insulators for Cable Terminations Polymeric/Composite

102

METAL FITTINGS & HARDWARE for INSULATORS, ARRESTERS, BUSHINGS & OVERHEAD LINES

102

PRODUCTION MACHINERY

102

TESTING EQUIPMENT

102

MISCELLANEOUS COMPONENTS & EQUIPMENT

103 LISTING OF SUPPLIERS IN ALPHABETICAL ORDER

2013 Buyer’s Guide & directory

12-11-20 4:03 PM

pagina sa

A point of reference in the power transmission field

Manufacturing Design Quality

SALVI Fittings on 765kV Quad Bundle Conductor Transmission Line

International standards

There are many good reasons to select SALVI. Our production processes are in the fore-front of the technique and they guarantee the highest quality levels in compliance with the most severe international standards. For this reason we are able to export our hardware and damping systems all over the world including countries subject to extreme environmental conditions. We are also able to realize hardware and fittings for very special projects such as large rivers or lakes crossings and damping devices for special structures like bridges, stadiums etc. Moreover we are always supporting our customers also during the installation stages thanks to design and development capacity of our technical department.

A. Salvi & C. S.p.A Milan (Italy) salvi@salvi.eu www.salvi.eu

www.sicame.com

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China

Cooper Power Systems

United States

CSL Silicones

Canada

CST Insulators

Brazil

Deccan Enterprises

India

Dekuma Rubber and Plastic Technology

China

Desma Elastomertechnik

Germany

Dextra Power

Hong Kong

Dongguan Gaoneng Electric

China

Electroporcelana Gamma

Colombia

Elektroporcelán Louny

Czech Republic

EMC Pacific

Australia

Eximprod Grup

Romania

Georg Jordan

Germany

Glasforms

United States

Global Insulator Group

Ukraine

Haefely Test

Switzerland

Hidro Jet Equipamentos Hydráulicos

Brazil

Hipotronics

United States

Hivolt Power System

China

HSP Hochspannungsgeräte & Trench Bushing

Germany

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• • • • •

• • • •

Misc. Components & Equip.

Changsha Guoli Electric Equipment

Testing Equipment

China

Production Machinery

CEE Installations

Fittings & Line Hardware

Italy

Insulating Materials

Cedaspe

Cable Accessories

United Kingdom

Bushings

Bastion Glassfibre

• •

• •

• • • •

Arresters

Turkey

Cutouts

Ankara Seramik

Hollow Core Insulators

Italy

Switch/Bus Insulators

Alstom Grid - Passoni & Villa

• • •

Station Post Insulators

India

Railway Insulators

Aditya Birla Insulators

Dead-End Insulators

Switzerland

Spool/ Strain/Guy Insulators

ABB Components & Composites

Pin Type Insulators

Country

Line Post Insulators

Company Name

Suspension Insulators

QUICK REFERENCE CHART FOR PRODUCTS OFFERED BY SUPPLIERS

• •

•

• • • • • •

• • • • • •

•

• •

• • •

• • • • • • • • • • • • •

• • •

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

• • • • • •

• •

• •

•

•

•

• • • •

• • •

•

• • • • • • •

2013 Buyer’s Guide & directory

12-11-20 4:03 PM

China

Jinan Meide Casting

China

K-Line Insulators

Canada

KALE Group

Turkey

Kuvag Isola Composites

Germany

Lapp Insulators

Germany

MacLean Power Systems

United States

Maxwell Technologies

Switzerland

Meansun Machinery & Mould

China

Meister International

United States

Mekufa

Netherlands

Midsun

United States

Modern Insulators

India

Motic (Xiamen) Electric Group

China

Newell-PSN

United States

Norsk Teknisk Porselen

Norway

Ofil

Israel

Omni LPS

Korea

Pars Electrical Transmission Equipment

Iran

Pfisterer

Switzerland

Phenix Technologies

United States

• • • •

• • •

•

• • •

• •

•

• •

• • • • • • • • • • • • • •

• • •

• • • • • • • • • • • • •

• •

• • • •

• • • • • • • • • •

•

• •

• • •

• • • • • • • • • • • • •

• • •

• •

• •

• • • •

• • • • • • • • • • • • • • • • • •

• • • • • • •

• • • •

•

• •

• •

2013 Buyer’s Guide & directory

2013_1913.indd 97

Misc. Components & Equip.

Jilin LongXin Electrical Equipment

Testing Equipment

Italy

Production Machinery

Isoelectric

Fittings & Line Hardware

Canada

Insulating Materials

Integrated Engineering Software

Cable Accessories

India

Bushings

Insulators & Electricals Company

• • • •

Arresters

Brazil

Cutouts

Indústria Eletromecânica Balestro

Hollow Core Insulators

Switzerland

Switch/Bus Insulators

Huntsman Advanced Materials

Station Post Insulators

Germany

Railway Insulators

Hübers Verfahrenstechnik

Dead-End Insulators

• •

Spool/ Strain/Guy Insulators

United States

Pin Type Insulators

Hubbell Power Systems

Company Name

Line Post Insulators

Country

Suspension Insulators

Misc. Components & Equip.

QUICK REFERENCE CHART FOR PRODUCTS OFFERED BY SUPPLIERS

•

•

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Austria

Seves Group - Sediver

France

SGD La Granja

Spain

Shaanxi Collaboration Eletric Power Tech.

China

Shaanxi Taporel Electrical Insulation Tech.

China

Shanghai Himalayal

China

Shanxi Century Metal Industries

China

Sichuan YiBin Global Group SYGG

China

Siemens

Germany

Suzhou Porcelain Insulator Works

China

TE Connectivity

Germany

Titan

China

• • • • • • • • •

• • • • • • •

Turkey

Uniflex Hydraulik

Germany

Uvirco Technologies

South Africa

Vogel Moulds and Machines

Switzerland

W.S. Industries

India

Wacker-Chemie

Germany

Wenzhou Yikun Electric

China

Xiameter from Dow Corning

United States

Yangzhou Xinyuan Electric

China

Yizumi Rubber Machinery

China

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•

•

• • • • •

•

• • • • • •

• • • • • • • • • • • •

•

• • •

• • • • • • • •

• •

• • •

•

•

• • • •

• •

•

Tridelta Überspannungsableiter/Parafoudres Germany/France Ugur Turkyurt

•

Misc. Components & Equip.

Seves Group - PPC Insulators

•

Testing Equipment

Italy

Production Machinery

Salvi & C.

Fittings & Line Hardware

United States

Insulating Materials

RHM International

• • •

Cable Accessories

France

•

Bushings

REP International

Arresters

Germany

Cutouts

Reinhausen Power Composites

Hollow Core Insulators

India

Switch/Bus Insulators

Radiant Enterprises

Station Post Insulators

Canada

Railway Insulators

Positron

Dead-End Insulators

Canada

Spool/ Strain/Guy Insulators

Polycast

Pin Type Insulators

Country

Line Post Insulators

Company Name

Suspension Insulators

QUICK REFERENCE CHART FOR PRODUCTS OFFERED BY SUPPLIERS

• •

• •

•

•

• •

•

•

•

•

• •

•

•

• •

•

2013 Buyer’s Guide & directory

12-11-20 4:03 PM

Misc. Components & Equip.

Index of Suppliers By Type of Product ELECTRICAL INSULATORS

Dongguan Gaoneng Electric - China

Indústria Eletromecãnica Balestro - Brazil

Elektroporcelan Louny - Czech Republic

Isoelectric - Italy

SUSPENSION INSULATORS

Eximprod Grup - Romania

Jilin LongXin Electrical Equipment - China

Disc-Type Suspension Insulators - Porcelain

Hivolt Power System - China

K-Line Insulators - Canada

Aditya Birla Insulators - India

Hubbell Power Systems - United States

Lapp Insulators - Germany

Ankara Seramik - Turkey

Isoelectric - Italy

MacLean Power Systems - United States

Changsha Guoli Electric Equipment - China

Jilin LongXin Electrical Equipment - China

Mekufa - Netherlands

CST Insulators - Brazil

K-Line Insulators - Canada

Pfisterer - Switzerland

Electroporcelana Gamma - Colombia

Lapp Insulators - Germany

Radiant Enterprises - India

Elektroporcelan Louny - Czech Republic

MacLean Power Systems - United States

Seves Group - Sediver - France

Hivolt Power System - China

Mekufa - Netherlands

TE Connectivity - Germany

Insulators & Electricals Company - India

Pfisterer - Switzerland

KALE Group - Turkey

Radiant Enterprises - India

PIN TYPE INSULATORS

Lapp Insulators - Germany

Seves Group - Sediver - France

(All Materials)

Meister International - United States

Siemens - Germany

Aditya Birla Insulators - India

Newell-PSN - United States

TE Connectivity - Germany

Ankara Seramik - Turkey

Norsk Teknisk Porselen - Norway

Ugur Turkyurt - Turkey

Changsha Guoli Electric Equipment - China

Seves Group - PPC Insulators - Austria

Wenzhou Yikun Electric - China

CST Insulators - Brazil

Suzhou Porcelain Insulator Works - China W.S. Industries - India

LINE POST INSULATORS

Deccan Enterprises - India Dongguan Gaoneng Electric - China

Line Post Insulators - Porcelain

Electroporcelana Gamma - Colombia

Disc-Type Suspension Insulators - Glass

Aditya Birla Insulators - India

Elektroporcelan Louny - Czech Republic

CST Insulators - Brazil

Ankara Seramik - Turkey

EMC Pacific - Australia

Electroporcelana Gamma - Colombia

Changsha Guoli Electric Equipment - China

Global Insulator Group - Ukraine

Global Insulator Group - Ukraine

CST Insulators - Brazil

Hivolt Power System - China

Hivolt Power System - China

Electroporcelana Gamma - Colombia

Isoelectric - Italy

Newell-PSN - United States

Elektroporcelan Louny - Czech Republic

Jilin LongXin Electrical Equipment - China

Norsk Teknisk Porselen - Norway

Hivolt Power System - China

Meister International - United States

Seves Group - Sediver - France

Insulators & Electricals Company - India

Newell-PSN - United States

SGD La Granja - Spain

KALE Group - Turkey

Norsk Teknisk Porselen - Norway

Sichuan YiBin Global Group SYGG - China

Lapp Insulators - Germany

Radiant Enterprises - India

Meister International - United States

Seves Group - PPC Insulators - Austria

Modern Insulators - India

Seves Group - Sediver - France

Newell-PSN - United States

SGD La Granja - Spain

Norsk Teknisk Porselen - Norway

W.S. Industries - India

Long-Rod Type Suspension Insulators Porcelain Aditya Birla Insulators - India CST Insulators - Brazil Elektroporcelan Louny - Czech Republic Insulators & Electricals Company - India KALE Group - Turkey Lapp Insulators - Germany Meister International - United States Modern Insulators - India Newell-PSN - United States Seves Group - PPC Insulators - Austria TE Connectivity - Germany Long-Rod Type Suspension Insulators Polymeric/Composite Aditya Birla Insulators - India CST Insulators - Brazil Deccan Enterprises - India

Radiant Enterprises - India Seves Group - PPC Insulators - Austria

SPOOL INSULATORS

Suzhou Porcelain Insulator Works - China

(All Materials)

TE Connectivity - Germany

Ankara Seramik - Turkey

W.S. Industries - India

Changsha Guoli Electric Equipment - China CST Insulators - Brazil

Line Post Insulators - Polymeric/Composite

Electroporcelana Gamma - Colombia

Changsha Guoli Electric Equipment - China

Elektroporcelán Louny - Czech Republic

CST Insulators - Brazil

MacLean Power Systems - United States

Deccan Enterprises - India

Meister International - United States

Dongguan Gaoneng Electric - China

Newell-PSN - United States

Elektroporcelan Louny - Czech Republic

Norsk Teknisk Porselen - Norway

EMC Pacific - Australia

Seves Group - PPC Insulators - Austria

Eximprod Grup - Romania

W.S. Industries - India

Hivolt Power System - China Hubbell Power Systems - United States

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Index of Suppliers By Type of Product STRAIN/GUY INSULATORS

(All Materials) Ankara Seramik - Turkey Changsha Guoli Electric Equipment - China Deccan Enterprises - India Dextra Power - Hong Kong (China) Electroporcelana Gamma - Colombia Elektroporcelán Louny - Czech Republic Isoelectric - Italy Jilin LongXin Electrical Equipment - China K-Line Insulators - Canada MacLean Power Systems - United States Meister International - United States Newell-PSN - United States Norsk Teknisk Porselen - Norway Pfisterer - Switzerland Seves Group - PPC Insulators - Austria W.S. Industries - India

DEAD-END INSULATORS Dead-End Insulators - Porcelain/Glass CST Insulators - Brazil Electroporcelana Gamma - Colombia Newell-PSN - United States Norsk Teknisk Porselen - Norway TE Connectivity - Germany Dead-End Insulators - Polymeric/Composite CST Insulators - Brazil Deccan - India Electroporcelana Gamma - Colombia Eximprod Grup - Romania Hivolt Power System - China Hubbell Power Systems - United States Indisol Isolantes Eléctricos - Portugal Indústria Eletromecãnica Balestro - Brazil Isoelectric - Italy K-Line Insulators - Canada MacLean Power Systems - United States Meister International - United States Mekufa - Netherlands TE Connectivity - Germany Wenzhou Yikun Electric - China

CUTOUTS

(All Materials) Changsha Guoli Electric Equipment - China Cooper Power Systems - United States CST Insulators - Brazil Electroporcelana Gamma - Colombia EMC Pacific - Australia Hivolt Power System - China Indústria Eletromecãnica Balestro - Brazil Pfisterer - Switzerland Radiant Enterprises - India Wenzhou Yikun Electric - China

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RAILWAY INSULATORS Railway Insulators - Porcelain/Glass Aditya Birla Insulators - India Ankara Seramik - Turkey CST Insulators - Brazil Electroporcelana Gamma - Colombia Elektroporcelan Louny - Czech Republic Global Insulator Group - Ukraine Insulators & Electricals Company - India KALE Group - Turkey Lapp Insulators - Germany Modern Insulators - India Newell-PSN - United States Seves Group - PPC Insulators - Austria Seves Group - Sediver - France SGD La Granja - Spain Suzhou Porcelain Insulator Works - China TE Connectivity - Germany W.S. Industries - India Railway Insulators - Polymeric/Composite Aditya Birla Insulators - India CST Insulators - Brazil Deccan - India Elektroporcelan Louny - Czech Republic EMC Pacific - Australia Eximprod Grup - Romania Georg Jordan - Germany Hubbell Power Systems - United States Isoelectric - Italy Jilin LongXin Electrical Equipment - China K-Line Insulators - Canada KALE Group - Turkey Lapp Insulators - Germany MacLean Power Systems - United States Mekufa - Netherlands Norsk Teknisk Porselen - Norway Pfisterer - Switzerland Seves Group - Sediver - France TE Connectivity - Germany Wenzhou Yikun Electric - China

STATION POST INSULATORS Station Post Insulators - Porcelain/Glass Aditya Birla Insulators - India Ankara Seramik - Turkey Changsha Guoli Electric Equipment - China CST Insulators - Brazil Electroporcelana Gamma - Colombia Elektroporcelan Louny - Czech Republic Hivolt Power System - China Insulators & Electricals Company - India KALE Group - Turkey Lapp Insulators - Germany Meister International - United States Modern Insulators - India Newell-PSN - United States

Norsk Teknisk Porselen - Norway Pfisterer - Switzerland Radiant Enterprises - India Seves Group - PPC Insulators - Austria Suzhou Porcelain Insulator Works - China TE Connectivity - Germany W.S. Industries - India Station Post Insulators - Polymeric/Composite Changsha Guoli Electric Equipment - China Elektroporcelan Louny - Czech Republic EMC Pacific - Australia Eximprod Grup - Romania Georg Jordan - Germany Hubbell Power Systems - United States Indústria Eletromecãnica Balestro - Brazil Isoelectric - Italy K-Line Insulators - Canada Lapp Insulators - Germany MacLean Power Systems - United States Mekufa - Netherlands Norsk Teknisk Porselen - Norway Radiant Enterprises - India Seves Group - PPC Insulators - Austria Seves Group - Sediver - France TE Connectivity - Germany Titan - China Wenzhou Yikun Electric - China

SWITCH/BUS INSULATORS

(All Materials) Ankara Seramik - Turkey Electroporcelana Gamma - Colombia Elektroporcelan Louny - Czech Republic Eximprod Grup - Romania Georg Jordan - Germany Global Insulator Group - Ukraine Hivolt Power System - China Hubbell Power Systems - United States Isoelectric - Italy K-Line Insulators - Canada Lapp Insulators - Germany MacLean Power Systems - United States Meister International - United States Newell-PSN - United States Norsk Teknisk Porselen - Norway Polycast - Canada Radiant Enterprises - India Suzhou Porcelain Insulator Works - China TE Connectivity - Germany Titan - China W.S. Industries - India Wenzhou Yikun Electric - China

INSULATORS FOR ARRESTERS Insulators for Arresters - Porcelain Electroporcelana Gamma - Colombia

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Index of Suppliers By Type of Product Elektroporcelan Louny - Czech Republic Insulators & Electricals Company - India Lapp Insulators - Germany Newell-PSN - United States Norsk Teknisk Porselen - Norway Radiant Enterprises - Italy Seves Group - PPC Insulators - Austria W.S. Industries - India Insulators for Arresters - Polymeric/Composite Elektroporcelan Louny - Czech Republic Isoelectric - Italy Lapp Insulators - Germany MacLean Power Systems - United States Norsk Teknisk Porselen - Norway Radiant Enterprises - Italy Reinhausen Power Composites - Germany Titan - China

INSULATORS FOR BUSHINGS Insulators for Bushings - Porcelain ABB Components & Composites - Switzerland Aditya Birla Insulators - India Ankara Seramik - Turkey Changsha Guoli Electric Equipment - China Electroporcelana Gamma - Colombia Elektroporcelan Louny - Czech Republic Insulators & Electricals Company - India KALE Group - Turkey Lapp Insulators - Germany Newell-PSN - United States Norsk Teknisk Porselen - Norway Radiant Enterprises - India Seves Group - PPC Insulators - Austria Suzhou Porcelain Insulator Works - China TE Connectivity - Germany W.S. Industries - India Insulators for Bushings - Polymeric/Composite ABB Components & Composites - Switzerland Changsha Guoli Electric Equipment - China Elektroporcelan Louny - Czech Republic Hivolt Power System - China Isoelectric - Italy Lapp Insulators - Germany MacLean Power Systems - United States Norsk Teknisk Porselen - Norway Radiant Enterprises - India Reinhausen Power Composites - Germany TE Connectivity - Germany Titan - China

INSULATORS FOR CABLE TERMINATIONS Insulators for Cable Terminations - Porcelain Elektroporcelan Louny - Czech Republic Insulators & Electricals Company - India

Lapp Insulators - Germany Modern Insulators - India Newell-PSN - United States Norsk Teknisk Porselen - Norway Insulators for Cable Terminations Polymeric/Composite ABB Components & Composites - Switzerland Elektroporcelan Louny - Czech Republic Lapp Insulators - Germany MacLean Power Systems - United States Mekufa - Netherlands Norsk Teknisk Porselen - Norway Pfisterer - Switzerland Reinhausen Power Composites - Germany TE Connectivity - Germany

ARRESTERS Arresters - Porcelain-Housed Hivolt Power System - China Hubbell Power Systems - United States Pars Electrical Transmission Equipment - Iran Radiant Enterprises - India TE Connectivity - Germany Tridelta Überspannungsableiter/Parafoudres Germany/France Wenzhou Yikun Electric - China Arresters - Polymeric/Composite-Housed CEE Installations - China Changsha Guoli Electric Equipment - China Cooper Power Systems - United States Eximprod Grup- Romania Hivolt Power System - China Hubbell Power Systems - United States Indústria Eletromecãnica Balestro - Brazil Isoelectric - Italy MacLean Power Systems - United States Omni LPS - Korea Pars Electrical Transmission Equipment - Iran Radiant Enterprises - India Seves Group - Sediver - France Siemens - Germany TE Connectivity - Germany Tridelta Überspannungsableiter/Parafoudres Germany/France Wenzhou Yikun Electric - China

BUSHINGS Bushings - Porcelain ABB Components & Composites - Switzerland Ankara Seramik - Turkey Cedaspe - Itialy Electroporcelana Gamma - Colombia

Elektroporcelan Louny - Czech Republic Hivolt Power System - China HSP Hochspannungsgeräte & Trench Bushing Group - Germany Radiant Enterprises - India Bushings - Polymeric/Composite ABB Components & Composites - Switzerland Alstom Grid- Italy Cedaspe - Itialy Dongguan Gaoneng Electric - China Elektroporcelan Louny - Czech Republic EMC Pacific - Australia Georg Jordan - Germany Hivolt Power System - China HSP Hochspannungsgeräte & Trench Bushing Group - Germany Hubbell Power Systems - United States Isoelectric - Italy Meister International - United States Mekufa - Netherlands Polycast - Canada Radiant Enterprises - India RHM International - United States

CABLE TERMINATIONS Cable Terminations - Porcelain TE Connectivity - Germany Cable Terminations - Polymeric/Composite ABB Components & Composites - Switzerland CEE Installations - China Cooper Power Systems - United States Pfisterer - Switzerland TE Connectivity - Germany

MATERIALS for INSULATORS & INSULATION ENHANCEMENT Coatings/Greases for Insulators CSL Silicones - Canada Midsun Group - United States Newell-PSN - United States Wacker-Chemie - Germany Xiameter from Dow Corning - United States Materials & Components for Insulators & Insulation Enhancement ABB Components & Composites - Switzerland Bastion Glassfibre Rod & Sections - United Kingdom Dextra Power - Hong Kong (China) Dongguan Gaoneng Electric - China Glasforms - United States Huntsman Advanced Materials - Switzerland Kuvag Isola Composites - Germany

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Index of Suppliers By Type of Product Materials & Components for Insulators & Insulation Enhancement MacLean Power Systems - United States Midsun Group - United States Motic (Xiamen) Electric Group - China Newell-PSN - United States Reinhausen Power Composites - Germany Shaanxi Taporel Electrical Insulation Tech. - China Titan - China Wacker-Chemie - Germany Xiameter from Dow Corning - United States

METAL FITTINGS for INSULATORS, ARRESTERS, BUSHINGS & OVERHEAD LINE APPLICATIONS Ankara Seramik - Turkey Cooper Power Systems - United States Dextra Power - Hong Kong (China) Dongguan Gaoneng Electric - China Electroporcelana Gamma - Colombia Elektroporcelan Louny - Czech Republic Global Insulator Group - Ukraine Hidro Jet Equipamentos Hidráulicos - Brazil Jinan Meide - China MacLean Power Systems - United States Pfisterer - Switzerland Salvi & C. - Italy Shaanxi Collaboration Eletric Power Technology- China Shanxi Century Metal Industries - China Siemens - Germany TE Connectivity - Germany Ugur Turkyurt-Turkey Volani Metais Indústria e Comércio - Brazil W.S. Industries - India

Siemens - Germany Uvirco Technologies - South Africa Yangzhou Xinyuan Electric - China

MISCELLANEOUS COMPONENTS & EQUIPMENT ABB Components & Composites - Switzerland Ankara Seramik - Turkey Cedaspe - Itialy CEE Installations - China Elektroporcelan Louny - Czech Republic Georg Jordan - Germany Indústria Eletromecãnica Balestro - Brazil K-Line Insulators - Canada MacLean Power Systems - United States Maxwell Technologies - Switzerland Omni LPS - Korea Pars Electrical Transmission Equipment - Iran Pfisterer - Switzerland Radiant Enterprises - India RHM International - United States TE Connectivity - Germany Wenzhou Yikun Electric - China

PRODUCTION MACHINERY Dekuma Rubber and Plastic Technology - China Desma Elastomertechnik - Germany Hübers Verfahrenstechnik - Germany MeanSun Machinery & Mold - China REP International - France Uniflex Hydraulik - Germany Vogel Moulds and Machines - Switzerland Yizumi Rubber Machinery - China

TESTING EQUIPMENT Haefely Test - Switzerland Hipotronics - United States Integrated Engineering Software - Canada Ofil - Israel Omni LPS - Korea Pars Electrical Transmission Equipment - Iran Phenix Technologies - United States Positron - Canada Shanghai Himalayal - China

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ABB Components & Composites Head Office: P.O. Box 8131, CH-8050 Zurich, SWITZERLAND

www.abb.com/electricalcomponents www.abb.com/composites Key Contact Personnel: Components: Lars Liden Lars.Liden@se.abb.com Composites: Mattias Lundborg Mattias.Lundborg@se.abb.com Quality Certification: ISO 9001 and 14001 Total Number of Employees: 2000 + Total Annual Sales: Over USD 800 million Manufacturing Plants: 22 manufacturing plants in 13 countries Major Markets Served (2012): Worldwide Range of Products Offered: See below

COMPONENTS Bushings: IEC/IEEE/ANSI for AC/DC applications up to 1200 kV for transformer (oil-air, oil-oil, oil-SF6), switchgear (air-SF6), generator (air-gas), traction and general application (air-air). Condenser designs available oil-impregnated and resin-impregnated (dry) either with porcelain or composite insulators. Non-condenser designs are available up to 72 kV. Annual Production Capacity for Bushings: Over 60,000 pieces Tap Changers: Load and de-energized tap changers of both conventional and vacuum type for AC/DC applications up to 1200 kV and 1000 MVA transformers. Vacuum OLTC suitable for use with environmental friendly liquids. Meeting all available international and national standards.

Annual Tap Changer Production Capacity: Over 3000 pieces Location of Manufacturing Plants: Guarulhos, Brazil; Hefei, China; Vadodara, India; Moscow, Russia; Ludvika, Sweden; Alamo Tennessee, USA; Micafil Zurich, Switzerland; Montebello, Italy

COMPOSITES Components: Machined parts from composite laminates for transformers, generators and high voltage equipment Filament Wound Products: Tap changer cylinders, insulating rods for HV breakers, loops for surge arrestes, tubes and shafts Vacuum Injected Parts: Tubes and rods for GIS and DTB applications Hollow Composite Insulators: 72 kV - 1100 kV and above for HV breakers, bushings, instrument transformers and cable termination applications Annual Production Capacity for Hollow Composite Insulators: Over 20,000 pieces Location of Manufacturing Plant: Piteå, Sweden Please see ad on page 67

Aditya Birla Insulators (A Unit of Aditya Birla Nuvo Ltd.)

Location of Manufacturing Plants: 1) P.O.Meghasar, Taluka: Halol, Dist. Panchmahals, Gujarat State 389330 INDIA Telephone: (91) 2676 221002 Telefax: (91) 2676 223375 E-Mail: abi.substation@adityabirla.com, abi.export@adityabirla.com abi.doemstic@adityabirla.com 2) P.O.Prabhas Nagar, Rishra Dist. - Hooghly, West Bengal, 712249 INDIA Telephone: (91) 33 27623535, 26729413 Telefax: (91) 33 26722705 E-Mail: abi.transmission@adityabirla.com

www.adityabirlainsulators.com Key Contact Personnel: Vikas Khosla, Chief Marketing Officer vikas.khosla@adityabirla.com Harleen S. Minhas, Head of Exports harleen.minhas@adityabirla.com Tushar Balar, General Manager (Export) tushar.balar@adityabirla.com Debashis Chakraborty, General Manager (Domestic) d.chakarborty@adityabirla.com Year Founded: 1967 Total Number of Employees: 3651 Quality Certification: ISO 9000 & 14001 (Both plants), Rishra Plant: SA 8000 & OHSAS 18001 Total Annual Sales: Over USD 125 million Percent of Sales in Export Markets: 30% Major Export Markets Served (2012): Europe, United States, Africa, Asia Pacific, Middle East, Central & South America Range of Products Offered: Electrical Insulators: Porcelain & Polymeric

INSULATORS (Porcelain) Suspension Disc-Type Insulators: Normal, Open Profile & Antifog Type, Mechanical Strength up to 420 kN, Creepage Distance up to 690 mm, Applicable Standard: IS, IEC, BS, ANSI & Australian specifications.

Long-Rod Type Insulators: Up to 800 kV, Creepage: 25 & 31 mm / kV IS, IEC, ANSI specifications.

Line-Post Insulators: Up to 66 kV, Creepage: 25 & 31 mm / kV IEC & ANSI specifications Pin-Type Insulators: Up to 69 kV Mechanical Strength : 10 kN, Creepage Distance: Up to 1080 mm, Applicable Standard : IS, IEC, BS, ANSI, AS VDE specifications.

Railway Insulators: Up to 25 kV IS, IEC & RDSO specifications.

Station Post Insulators: Up to 1200 kV IS, IEC & ANSI specifications Hollow Insulators: For SF6 Circuit Breakers, Instrument Transformers, Condensor Bushings. Maximum height in one unit construction upto 2600 mm. Maximum diameter 775 mm.

Annual Production Capacity: 62,500 MT

INSULATORS (Polymeric) Long-Rod Type Insulators: Up to 400 kV IS & IEC specifications Railway Insulators: Up to 25 kV IS, IEC & RDSO specifications Annual Production Capacity: 45,000 MT

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Alstom Grid

Head Office & Manufacturing: 1.0.S.B. Osmanli Caddesi No. 15, Sincan, PO Box 06930, Ankara, TURKEY Telephone: (90) 312 267 37 77 Telefax: (90) 312 267 27 77 E-Mail: info@ankaraseramik.com

Head Office & Manufacturing: Viale Suzzani 229, I-20162 Milano, ITALY Telephone: (39) 02-661 221 Telefax: (39) 02-647 0906 E-Mail: rpv@alstom.com

www.grid.alstom.com/home Key Contact Personnel: Zohir Benhammou, Unit Managing Director zohir.benhammou@alstom.com Eugenio Falcone, Sales & Mktg. Manager eugenio.falcone@alstom.com Year Founded: 1923 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 50 to 100 million Percent of Sales in Export Markets: 85% Major Export Markets Served (2012): China, Brazil, Turkey, Germany, Korea, United States, India Range of Products Offered: AC/DC bushings solutions for all applications

BUSHINGS For all applications, cost effective solutions to facilitate the electric stress control of equipment. AC or DC solutions offer customer benefits : longer life time and higher reliability, increased safety, no maintenance and installation flexibility.

• Epoxy resin bonded paper for voltages up to 36 kV for generators • Oil-impregnated paper for voltages up to 1200 kV for power transformers and through-wall applications • SF6 insulated up to 550 kV for GIS, GIL and dead tank circuit breakers • RIP - Resin Impregnated Paper Bushings for power transformers

INTRODUCTION Alstom Grid generated sales of over 3.6 billion in 2010, employing 20,000 people at more than 90 manufacturing sites worldwide - making it among the top three groups specializing in electricity transmission: More than 100 years of experience in the development of world electrical grids, advanced technologies and expertise in key domains such as power electronics, ultra high voltage, direct current interconnections, integration of renewables into the grid and network management solutions.

Please see ad on page 37

www.ankaraseramik.com Key Contact Personnel: Ilhami Sahin, Chairman of the Board ilhami@ankaraseramik.com Neval Karsidag, General Manager neval@ankaraseramik.com Nazan Karsidag, Foreign Trade Manager nazan@ankaraseramik.com Year Founded: 1996 Total Number of Employees: 250 Total Number of Factory Workers: 180 Quality Certification: ISO 9001:2008, ISO 14001 Percent of Sales in Export Markets: 35% Major Export Markets Served (2012): Worldwide Range of Products Offered: Electrical Insulators (Porcelain & Polymeric), Metal Fittings, Transformer Accessories

INSULATORS (Porcelain) Suspension Disc-Type Insulators: Up to 120 kN IEC 383 and ANSI C29.2 standart or fog type with or without zinc sleeve Line-Post Insulators: Up to 36 kV, hominal bending strength 12.5 kN Station Post Insulators: Up to 420 kV, IEC 60273 and special types according to the customer’s drawings Bushing Insulators: Up to 52 kV transformer bushing with metal kits Pin-Type Insulators: Up to 36 kV IEC 383, ANSI C29.5 & C29.6 and special types according to the customer’s drawings Spool Insulators: IEC 383 and ANSI C29.3 and special types according to the customer's drawings Strain/Guy Insulators: IEC 383 and ANSI C29.4 and special types according to the customer's drawings Railway Insulators: Special types according to the customer's drawings Switch Insulators / Bus Insulators: Up to 36 kV and and special types according to the customer's drawings Annual Production Capacity for Insulators: 10,000 tonnes

BUSHINGS (Porcelain) Transformer Bushings, DIN Standards & EN Standards: Up to 52 kV and special types according to the customers drawings Transformer Bushings, ANSI Standard: Up to 44 kV and special types according to the customers drawings Capacitor Bushings: Up to 200 kV BIL and and special types according tothe customers drawings Porcelain for Current-Limiting Fuses: Wall bushings according to the customers drawings

TRANSFORMER ACCESSORIES (Bushing Kits) Bosta Electric Holding Company Head Office & Manufacturing: 3-403, Yi Xiang Ju, Yi He Mei Di, No. 9 Su Yuan Dadao, Jiang Ning Kai Fa Qu, Nanjing, 211100, CHINA Telephone: (86) 25 8656 0586 Telefax: (86) 25 8656 0516 Mobile: (86) 13901596389 E-Mail: samsmith2008@163.com Home Page on the Internet: www.bostaelectric.com

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MV/HV electrical apparatus (breakers, current/voltage transformers, panel/switch boards) as a manufacturer of termination connectors and other active parts made in copper, bronze, brass, aluminium according to customer’s drawing.

FITTINGS Hardware and fittings for OHL distribution transmission lines, galvanized or stainless steel hardware.

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Bastion Glassfibre Rod & Sections Ltd.

Head Office: 12 Harvey Close, Crowther Industrial Estate, Washington, Tyne & Wear NE38 OAB, UNITED KINGDOM Telephone: (44) 191 4166394 Telefax: (44) 191 4154961 E-Mail: gf-admin@bastion-ltd.co.uk Home Page on the Internet: www.bastion-ltd.co.uk Key Contact Personnel: Jeff Redmayne, Director Debbie Orr, Admin. Manager debbie.orr@bastion-ltd.co.uk Year Founded: 1973 Total Number of Employees: 28 Total Number of Employees in Production: 21 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 3 to 5 million Percent of Sales in Export Markets: 65% Major Export Markets Served (2012): Europe & Asia Materials or Components for Insulators: Epoxy bonded ECR type glass, unidirectional reinforced rods.

CEE Power Systems Head Office & Manufacturing: No.20 Jinzhou North Road, Golden Mountain Industrial Zone, Fuzhou, Fujian, 350002 CHINA Telephone: (86) 591-8384 9865, (1) 505-792-6746 (Office in America) Telefax: (86) 591-8384 9869, (1) 505-771-9137 (Office in America) Email: ceepower@ceepower.com

www.ceepower.com Key Contact Personnel: Sunny Yang, Foreign Trade Manager Ellen Hao, Office in America

Cedaspe S.p.A. Head Office: 1, Via Colombara, Frazione Pedriano, I-20098 S.Giuliano Milanese (MI), ITALY Telephone: (39) 02 9820 4411 Telefax: (39) 02 9820 4422 E-Mail: sales@cedaspe.com

www.cedaspe.com Key Contact Personnel: G. F. Giorgi, Director - Tech. & Marketing Mgr. A. Giorgi, Director - Production Mgr. M. Manera, Purchasing Mgr. G. Astengo, Sales Mgr. Year Founded: 1967 Total Number of Employees: 60 Total Number of Employees in Factory Production: 40 Quality Certification: ISO 9001 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 90% Major Export Markets Served (2012): Belgium, India, Germany, Brazil, Turkey, Singapore Range of Products Offered: Bushings (porcelain, composite), and Accessories for Power Transformers

sunny@ceepower.com ellen@ceepower.com hyL5485@gmail.com Year Founded: 1993 Total Number of Employees: 600 Number of Employees in Production: 450 Quality Certification: IEEE 386, EN 50180/50181,DIN47636, IEC 60502-4, etc.

Our separable connectors have passed KEMA type tests Total Annual Sales: USD 50 to 60 million Percent of Sales in Export Markets: 10% Major Export Markets Served (2012): Saudi Arabia, Mexico, Indonesia, Vietnam, Peru, Korea, Australia Range of Products Offered: Separable Cable Connectors, Cold-Shrinkable Cable Accessories

SEPARABLE CABLE CONNECTORS 600 A Separable Cable Connector Electrical Characteristics: Voltage Rating & Characteristics: 15 kV 25 kV 35 kV Standard Voltage Class: 15 kV 25 kV 35 kV Max. Rating Phase-to-Phase: 14.4 kV 26.3 kV 36.6 kV Max. Rating Phase-to-Ground: 8.3 kV 15.2 kV 21.1 kV AC 50 Hz 1 Minute Withstand: 39 kV 40 kV 50 kV DC 15 Minute Withstand: 53 kV 78 kV 103 kV BIL and Full Wave Crest: 95 kV 125 kV 150 kV ≤10 pcs ≤19 pcs ≤26 pcs Partial Discharge: Current Rating & Characteristics: 15 kV 25 kV 35 kV 600 A Interface: 600 A 600 A 600 A

M.O.V SURGE ARRESTERS The arresters are molded with high quality EPDM or silicon rubber insulating materials and designed as per IEC 60099-4:1991 standard, including M.O.V elbow surge arrester, bushing surge arrester, shielded sub-surge arrester, shielded fore-surge arrester and shielded sub-surge arrester with silicone rubber.

RUBBERIZED ALUMINUM BAR

BUSHINGS

Designed for low voltage underground cable connection. Fabricated from 6061-T6 aluminum with molded EPDM rubber. Fully insulated and watertight.

- Porcelain or Composite Solid Type Oil Filled Bushings for Power Transformers, from 1 kV up to 52 kV, from 250 A up to 12,500 A - Accessories for Transformers Annual production capacity for Bushings: 500,000 bushings/year

Indoor and outdoor terminations, up to 36 kV, for connecting three or single core power cable to indoor medium voltage apparatus like switchgear, KIOSK substation, transformer…etc.

COLD SHRINKABLE CABLE ACCESSORIES

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Changsha Guoli Electric Equipments Co., Ltd Head Office: 13/F, Tianxin Huating Buliding, 48 CaiE Road, Changsha, Hunan, CHINA Telephone: (86) 731-8442 8423/8442 8723 Telefax: (86) 731-8442 8253 Location of Manufacturing Plant: No. 01, Sifeng Town, Liling City, Hunan, CHINA Telephone: (86) 731-2352 5018/2352 5019 E-Mail: geccn@126.com, guolianworks@yahoo.com

www.geccn.cn / www.glccn.cn Key Contact Personnel: Huang Wei, General Manager guolianworks@yahoo.com Huang Hai Bo, Int’l Sales Manager geccn@126.com Zhang Pei San, Plant Manager glccn@126.com Year Founded: 1995 Total Number of Employees: 520 Quality Certification: ISO 9001 Percent of Sales in Export Markets: 70% Total Annual Sales: USD 10 million Major Export Markets Served (2012): United States, Korea, Spain, Middle-East, Kenya, South Africa etc.

Range of Products Offered: Electrical Insulators (Porcelain/Polymeric)

INSULATORS (Porcelain/Polymeric) Suspension Disk-Type Insulators: All types Line-Post Insulators: ANSI, IEC type Station Post Insulators: TR-205, TR-208, TR-210, TR-216, TR-278, TR-287, TR-288, TR-304, up to 500 kV Pin-Type Insulators: Up to 36 kV Spool Insulators: LV & MV Strain / Guy Insulators: LV & MV Cutouts: Up to 38 kV Insulators for Hollow Bushings: Up to 500 kV Number of Employees in Insulator Production: 460 Annual Production Capacity for Insulators: Porcelain Insulators: 1,500,000 pcs Composite Insulators: 80,000 pcs

Cooper Power Systems Head Office: 1045 Hickory St, Pewaukee, WI 53072-3792, UNITED STATES Telephone: (1) 262-691-0070 Telefax: (1) 262-691-8277

www.cooperpower.com Key Contact Personnel: Karen Leix, Marketing Manager karen.leix@cooperindustries.com Quality Certification: ISO 9001 Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): Europe, Africa, Southeast Asia, South America and North America

ARRESTERS Key Contact Personnel: Alice Stage, Global Product Manager alice.stage@cooperindustries.com Range of Products Offered: • Low voltage, medium, and high voltage surge arresters • Gapless and gapped MOV arresters Class 1, 2, 3, and 4 • Porcelain housed 3-360 kV arresters • Silicone rubber 3-240 kV arresters

CABLE ACCCESSORIES Key Contact Personnel: Chris Decker, Global Product Manager christopher.decker@cooperindustries.com Range of Products Offered: • 200 A, 15 and 25 kV deadbreak connectors • 400 A, 36 kV deadbreak connectors • 630 A, 25 and 36 kV deadbreak connectors • 600/900 A, 25 and 25 kV deadbreak connectors • 630 A, 42 kV deadbreak connectors • 200 A, 15, 25, and 35 kV loadbreak connectors • 600 A, 15 and 25 kV loadbreak connector system

CUTOUTS Key Contact Personnel: Tim Brenny, Global Product Manager timothy.brenny@cooperindustries.com Range of Products Offered: • Universal cutouts • Arrester combinations • Loadbreak HX type cutouts • Polymer and porcelain Type L cutouts

ARRESTERS

SALES REPRESENTATION IN FOREIGN MARKETS

Arresters: Up to 500 kV

Australia & Pacific Islands: Smithfield Tel: (2) 8787 2779 Fax: (2) 9609 2746 Brazil: Sao Paulo Tel: (15) 3481 9135 China: Shanghai Tel: (21) 6275 8655 Europe, Africa & Middle East: Athens, Greece Tel: (210) 964 6332 Fax: (210) 964 6363 Latin America: Querétaro, Mexico Tel: 52 442 211 3800 Pacific Rim: Singapore Tel: 6273 8225 Fax: 6273 8550 Taiwan: Taipei Tel: (2) 2758 4530 Fax: (2) 2758 4535 USA & Canada: Waukesha, WI Tel: (1) 877 CPS INFO, (262) 691 9330

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CST Insulators

Head Office & Manufacturing: Av. Dr. Jorge Duprat Figueiredo, 901 B. Moranquim, Pedreira - SP, 13900-000, BRAZIL Telephone: (55) 19-3852 9900 Telefax: (55) 19-3893 1742 E-Mail: cst@cst-isoladores.com.br Home Page on the Internet: www.cst-isoladores.com.br

CSL Silicones Inc. (Si-COAT) Head Office & Manufacturing: 144 Woodlawn Road West, Guelph, Ontario N1H 1B5, CANADA Telephone: (1) 519-836-9044 Telefax: (1) 519-836-9069 E-Mail: info@cslsilicones.com

www.si-coat.com Key Contact Personnel: Faisal Huda, President & CEO fhuda@cslsilicones.com Chris McConnery, Operations Mgr. cmcconnery@cslsilicones.com Moe Ragbir, Technical Services Mgr. mragbir@cslsilicones.com Year Founded: 1979 Total Number of Employees: 33 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 85% Major Export Markets Served (2012): Qatar, Israel, India, Taiwan, China, Saudi Arabia, U.A.E., U.S.A., Italy, Australia, Turkey, Brazil Range of Products Offered: Materials for Insulators and Insulation

MATERIALS FOR ELECTRICAL INSULATORS Si-COAT 570 RTV high voltage insulator coating Total Number of Employees in Production: 22 Production Capacity: 4,000 metric tonnes of insulator coatings Please see ad on Outside Back Cover

Key Contact Personnel: Amarildo Manias, Export & Import Manager amarildo@cst-isoladores.com.br Celso Sertório, Commercial Manager csertorio@cst-isoladores.com.br Manoel Rodrigues, Export Department manoel@cst-isoladores.com.br Viviane Bonamin, Export & Import Department viviane@cst-isoladores.com.br Year Founded: 1953 Total Number of Employees: 300 Quality Certification: ISO 9001:2000 through British Standards Institution Total Annual Sales: USD 20 to 30 million Percent of Sales in Export Markets: 30% Major Export Markets Served (2012): USA, Canada, Argentina, Chile, Uruguay, Venezuela, United Kingdom, Peru, Ireland, U.A.E. Range of Products Offered: Electrical Insulators (Porcelain, Glass and Composite for Brazil and Latin America, and Porcelain or Glass recovered with Coat RTV-HVIC, Technical Assistance and Development of Projects.

INSULATORS (Porcelain, Glass and Composite) Suspension Disc-Type Insulators: Toughened glass, from 11 kV to 500 kV and from 40 kN to 300 kN; porcelain from 11 kV to 132 kV and from 40 kN to 133 kN (30,000 lbs); ANSI, IEC, BS standards and special designs (AC, DC) Line-Post Insulators: ANSI 57-1, 57-2, 57-3, 57-4, 57-5, 57-11, 57-12, 57-13, 57-21, 57-22, 57-23; IEC and BS standards Pin-Type Insulators: From 1 kV to 72 kV as per ANSI (from 15 to 69 kV) BS standards and special designs Spool Insulators: From ANSI 53-1 to 53-4 and BS standards Dead-End Insulators: All types according to ANSI, IEC and BS standards Cutouts: From 6 kV according to ANSI standard Railway Insulators: According to customer specifications Solid Core Station Posts: ANSI, IEC standards and special designs up to 800 kV nominal voltage, and solid core cap and pin replacement insulators Long-Rod Insulators: Porcelain from 7.5 to 69 kV (50 to 120 kN) and silicone insulators from 15 to 220 kV (50 to 160 kN) all end fittings types Cap & Pin Insulators: ANSI standards and special designs Number of Employees in Insulator Production: 250 Annual Production Capacity for Insulators: 7800 tonnes

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TM

Total Solution Provider For Insulator Makers

Deccan Enterprises Private Limited Head Office & Manufacturing: B58-60 Assisted Private Industrial Estate, Balanagar, Hyderabad 500037 INDIA Telephone: (91) 40 2387 0111 Telefax: (91) 40 2377 8699 E-Mail: sales@deccan.in Home Page on the Internet: www.deccan.in Key Contact Personnel: Vikas Jalan, JT. Managing Director vjalan@deccan.in A S Rao, Director (Tech) asrao@deccan.in M N Rao, General Manager (Sales) mnrao@deccan.in Year Founded: 1966 Total Number of Employees: 150 Number of Employees in Production: 100 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: Less than 10% Major Export Markets Served (2012): Kenya, Nigeria, Uganda, Ghana, Middle East Range of Products Offered: Polymeric (Composite) Insulators INSULATORS; Long-Rod Type Insulators : 765 kV - 1200 kV up to 420 kN UHV insulators 66 kV - 400 kV up to 210 kN for transmission 11 kV - 33 kV up to 120 kN for distribution As per customer requirement for creepage, sectional length with ball & socket, tongue & clevis and ball eye end fittings as per IEC, IS, REC or customer specifications.

Line-Post Insulators: Up to 400 kV, 8 kN as per IEC specifications Pin-Type Insulators: 11 kV - 33 kV pin insulators up to 12.5 kN as per IEC and REC specifications Strain / Guy Insulators: Up to 220 kV, 120 kN as per IEC specifications Dead-End Insulators: Up to 765 kV Railway Insulators: 25 kV Bracket, Stay and Tension insulator, Sectioning insulator, Operating Rod, Post Insulator as per IEC & RDSO specifications

Dekuma Rubber and Plastic Technology (Dongguan) Ltd. Head Office & Manufacturing: Yinzhu Rd., Zhouwu Industrial Park, Dongcheng District, Dongguan, Guangdong Province 523118, CHINA Telephone: (86) 769 2266 7183 Telefax: (86) 769 2266 7227 E-Mail: info@dekuma.com

www.dekuma.com Key Contact Personnel: Foster Yi, Overseas Marketing foster_yi@dekuma.com Total Number of Employees: 500 Percent of Sales in Export Markets: 30% Major Export Markets Served (2012): Worldwide Range of Products Offered: Production machinery

PRODUCTION MACHINERY Equipment for Rubber Injection Machine and Moulds Equipment for Silicone Processing: For both solid and liquid silicone rubber Provider of moulds and machines, including special design machine for hollow insulators Please see ad on page 59

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Klöckner Desma Elastomertechnik GmbH Head Office: An der Bära, Fridingen, 78567 GERMANY Telephone: (49) 7463-834-0 Telefax: (49) 7463-834-186 E-Mail: sales@desma.biz Address of Manufacturing Plants: Desma USA, Inc: 2195 Arbor Tech Drive, Hebron, KY 41048 UNITED STATES Telephone: (1) 859-525 6610 Telefax: (1) 869-525 8972 Klockner Desma Machinery Pvt. Ltd.: Plot No. 10, Road No. 1, GIDC, Kathwada, Nr. Torrent Power Substation, Ahmedabad, 382430 INDIA Telephone: (91) 79-2290 1782 Telefax: (91) 79-2290 1785 Desma Rubber Injection Machinery (Wuxi) Co. Ltd.: No. 227 Chengnan Road, Hall no. 5, Whangzhuang Industrial New Area, Jiangsu, Wuxi 214028 CHINA Telephone: (86) 510-8536 1118 Telefax: (86) 510-8536 2992 Desma Slovakia s.r.o.: Šebešt'anová 262, Považská Bystrica, 214028 SLOVAKIA Telephone: (421) 42-430 7200 Telefax: (421) 42-432 0327

www.desma.biz Key Contact Personnel: Martin Schürmann, Managing Director martin.schuermann@desma.biz (Sales, Marketing, Administration) Harald Schmid, General Sales Manager harald.schmid@desma.biz Harald Zebedin, Managing Director harald.zebedin@desma.biz (Design, Engineering, Manufacturing) Olaf Steinwede, Head of Production olaf.steinwede@desma.biz Volker Krell, Head of Design & Development volker.krell@desma.biz Rainer Kirschnick, Head of Mold Shop rainer.kirschnick@desma.biz Year Founded: 1965 Total Number of Employees: 480 Number of Employees in Production: 300 Quality Certification: ISO 9001:2008 Total Annual Sales: Over USD 100 million Percent of Sales in Export Markets: 70% Major Export Markets Served (2012): USA, China, India, Europe Range of Products Offered: Injection molding machines for making rubber and silicone insulators

Dextra Power Head Office: 1901 TungWai Commercial Building, 109 Gloucester Rd. Wanchai, Hong Kong, CHINA Telephone: (852) 2820 5224 Telefax: (852) 2519 0852 E-Mail: power@dextragroup.com

www.dextragroup.com/power Key Contact Personnel: Arnaud de Surville, Managing Director a.de.surville@dextragroup.com Pierre Hofmann, Business Engineer PHofmann@dextragroup.com Total Number of Employees: 200 Quality Certification: ISO 9001: 2008 Percent of Sales in Export Markets: 95% Major Export Markets Served (2012): USA, Brazil, Colombia, Italy, Spain, Australia, Mexico, Serbia, France Range of Products Offered: Components for Electrical Insulators (Glass, Porcelain, Polymeric)

INSULATORS (Polymeric) Guy Strain Insulators: Fiberglass guy strain insulators, from 67kN (15,000lbs) to 157kN (35,000lbs) / from 300mm (12”) to 3600mm (144”) Materials or Components for Insulators: FRP Rods (E-Glass, ECR-Glass, PE-resin, Epoxy-resin…), Metal Fittings (Ball, Socket, Clevis, Eye, Tongue…)

INSULATORS (Glass) Materials or Components for Insulators: Galvanized Pins for suspension Disc-type insulators (with or without Zinc-Ring)

INSULATORS (Porcelain) Materials or Components for Insulators: Galvanized Pins for suspension Disc-type insulators (with or without Zinc-Ring)

SALES REPRESENTATION IN FOREIGN MARKETS India: india@dextragroup.com Thailand: thailand@dextragroup.com Middle East: middleeast@dextragroup.com Europe: europe@dextragroup.com North America: america@dextragroup.com South America: brasil@dextragroup.com Please see ad on page 17

Sales Representation in Foreign Markets USA: Scott Early Email: scott.early@desma.biz CHINA: Weiming Ong Email: weiming.ong@desma.biz INDIA: Arun Mankodi Email: arun.mankodi@desma.biz EUROPE: Harald Schmid Email: harald.schmid@desma.biz Additionally assisted by several agencies to handle the market in Europe. For addresses and contacts please see at our website: http://www.desma.biz/en/kontakt/vertretungen.html (agencies) Here the contacts for Middle East, Eurasia, Asia etc. can be found, too.

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Electroporcelana Gamma S.A.

Head Office & Manufacturing Facility: Carrera 49 N° 67-sur 680 Sabaneta, Antioquia, COLOMBIA Telephone: (574) 305 80 00 Telefax: (574) 372 56 86 E-Mail: myepes@corona.com.co Home Page on the Internet: www.gamma.com.co

Dongguan Gaoneng Electric Co., Ltd. Head Office & Manufacturing: Jinghui Road No. 2, Niushan Foreign Trade Economy Industrial Park, Dongcheng District, Dongguan City, Guangdong, 523012 CHINA Telephone: (86) 769 2263 8453 Telefax: (86) 769 2229 1877 E-Mail: export@gaonengelectric.cn

www.gaoneng.com Key Contact Personnel: Wang Muxi, General Manager wangmx@sznari.com Zhao Tianren, Assistant Chief Engineer ztr@gaonengelectric.cn Du Daoming, Marketing Manager dggnddm100w@163.com Zhang Fan, Export Sales Manager export@gaonengelectric.cn Year Founded: 1994 Total Number of Employees: 400 Total Number of Factory Workers: 250 Quality Certification: ISO 9001: 2008 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 32.77% Major Export Markets Served (2012): India, USA, England, Spain, France, Iran Range of Products Offered: Composite insulators, bushings

INSULATORS (Composite) Long-Rod Type Insulators: From 10 kV to 1000 kV Line-Post Insulators: From 20 kV to 220 kV Pin-Type Insulators: From 10 kV to 35 kV Materials or Components for Insulators: Metal End Fittings, Grading Ring, Silicon Rubber, Locking Pin, ECR Rod Coatings for Insulators: Silicon Rubber Total number of employees in production of insulators: 250 Annual production capacity for insulators: Approx. 1.6 million pieces of 110 kV standard insulators

BUSHINGS Switch Bushings for Outdoor Switch: Specified electric current: 630 A Heat stabilizes electric current: 20 kA Please see ad on page 1

Key Contact Personnel: Mauricio Yepes, CEO myepes@corona.com.co Christopher Seguin, VP Sales North America cseguin@rochester.rr.com Juan Pedro Tascon, VP Sales Latin America jptascon@corona.com.co Year Founded: 1962 Total Number of Employees: 350 Quality Certification: ISO 9001:2008 Others Certifications: ISO 14001:2004, OHSAS 18001:2007, BASC, CTPAT Total Annual Sales: USD 20 to 30 million Percent of Sales in Export Markets: 75% Major Export Markets Served (2012): Canada, USA, México, Guatemala, Venezuela, Costa Rica, El Salvador, Honduras, Nicaragua, Dominican Republic, Panama, Ecuador, Bolivia, Brazil, Argentina, Paraguay, Chile, Singapore, Taiwan, Korea, Vietnam, Peru, Cuba, Philippines, Saudi Arabia Range of Products Offered: Electrical Insulators (Glass, Porcelain, Polyethylene, Polymeric and Hybrid), Porcelain Bushings INSULATORS (Porcelain): Suspension Disc-Type Insulators: Up to 120 kN, ANSI C29.2, standard or fog type, with or without zinc sleeve Line Post Insulators: Up to 69 kV tie top and clamp top, mounting studs avaible, ANSI C29.7 and special types according to customer designs Pin-Type Insulators: Up to 35 kV, mounting studs avaible, ANSI C29.5 & C29.6 and special types according to customer designs Pin Post Insulators: Up to 25 kV and special types according to customer designs, mounting studs avaible Spool Insulators: ANSI C29.3 and special types according to customer designs Strain/Guy Insulators: ANSI C29.4 and special types according to customer designs Dead-End Insulators: Up to 44 kV, ANSI C29.2 Railway Insulators: Special types according to customer designs Station Post Insulators: Up to 72 kV, ANSI C29.9 and special types according to customer designs Annual Production Capacity for Porcelain Insulators: 8000 tonnes INSULATORS (Polymeric, Polyethylene and Hybrid): Dead-End and Suspension: Up to 230 kV, 160 kN Hybrid Pin Type: 15 kV porcelain body and silicone sheds Polyethylene: Tie Top Pin insulators and spacers Polymer Line Post Fiber Glass Guy Strain: Up to 70 kN. Lenghts from 12” to 144”. All hardware mixes available Annual Production Capacity for Polymeric Insulators: 300,000 units INSULATORS (Glass): Suspension Disk-Type: Up to 300 kN, IEC 383-1, standard or fog type BUSHINGS (Porcelain): Transformer Bushings, DIN Standard: Up to 52 kV and special types according to customer designs Transformer Bushings, ANSI Standard: Up to 44 kV and special types according to customer designs Capacitor Bushings: Up to 200 kV BIL and special types according to customer designs Recloser Bushings: Up to 38 kV 150 kV BIL and special types according to customer designs Porcelain for Current - Limiting Fuses: According to customer designs Insulators for Cutouts: Up to 200 kV BIL and special types according to customer designs Insulators for Surge Arresters: Up to 35 kV and special types according to customer designs Switch Insulators / Bus Insulators: Up to 35 kV and special types according to customer designs Other Bushings: According to customer designs Annual Production Capacity for Bushings: 7000 tonnes FITTINGS: Eye nuts, hanging rings, clamps, studs, thimbles EQUIPMENT: Polymer distribution surge arrester, porcelain and polymer cut out fuses, distribution hookstick switches

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Elektroporcelán Louny a.s.

Head Office & Manufacturing Plant: Postoloprtská 2951, Louny 440 15, CZECH REPUBLIC Telephone: (420) 415 622 111 Telefax: (420) 415 622 112 Location of 2nd Manufacturing Plant: Merklin Plant: Merklin 36234, CZECH REPUBLIC Telephone: (420) 353 678 111 Telefax: (420) 353 618 231 E-Mail: info@epl.cz Home Page on the Internet: www.epl.cz, www.worldofinsulators.com Key Contact Personnel: Miroslav Novotný, General Manager novotny.m@epl.cz Petr Milota, Executive Manager milota.p@epl.cz Jirí Bláha, Sales & Marketing Manager blaha.j@epl.cz Michal Kosina, Financial Manager kosina.m@epl.cz Josef Popelka, Purchase Manager popelka.j@epl.cz Year Founded: 1950 Total Number of Employees: 214 Total Number of Factory Workers: 162 Quality Certification: ISO 9001, ISO 14001, OHSAS 18001, Q1 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 84% Major Export Markets Served (2012): Germany, Italy, Slovakia, Russia, Switzerland, Poland, USA, Netherlands Range of Products Offered: Electrical Insulators (Porcelain/Polymeric) INSULATORS (Porcelain/Polymeric): Suspension Disc-Type Insulators: Max. 120 kN Long-Rod Type Insulators: According to IEC 433, mechanical strength 160 kN Line Post Insulators: According to IEC 720, up to 35 kV, mass C130 according to IEC 672 Pin-Type Insulators: Up to 35 kV Spool Insulators: According to DIN or BS standard Strain/Guy Insulators: According to DIN or BS standard Railway Insulators: Up to 35 kV, mass C130 according to IEC 672 Station Post Insulators: According to IEC 273 Insulators for Bushings: All up to 730 kV Switch Insulators / Bus Insulators: According to demand Insulators for Arresters: All up to 730 kV Insulators for Cable Terminations: All up to 730 kV Other Types of Insulators: Instrument transformers Materials or Components for Insulators: Assembling sets for transformer bushings and bolted joint for line post types of insulator Number of Employees In Insulator Production: 162 Annual Production Capacity for Insulators: Up to 6000 T BUSHINGS: Up to 30 kV Number of Employees In Bushings Production: 28

WORLD BuShIngS WORLDCLASS CLASS InSuLAtORS InSuLAtORS AnDAnD BuShIngS

StROngeR LIghteR SmARteR StROngeR LIghteR SmARteR

EMC Pacific Pty. Ltd. Head Office: 2 Abbotts Road, Dandenong South, Victoria 3175, AUSTRALIA Telephone: (61) 3 8792 5200 Telefax: (61) 3 9706 6634 E-Mail: sales@emcpacific.com.au

www.emcpacific.com.au Key Contact Personnel: Andrew Sorensen, Managing Director asorensen@emcpacific.com.au Michael Schauer, Production & Maintenance Manager mschauer@emcpacific.com.au Gordon Chessum, Technical R&D Manager gchessum@emcpacific.com.au Year Founded: 1996 Total Number of Employees: 50 Quality Certification: ISO 9001 Major Export Markets Served (2012): Australia, New Zealand, United States, Canada, Philippines, Malaysia Range of Products Offered: World Class PH-CEP Insulators and Bushings

INSULATORS (Polymeric) Line Post Insulators: PH-CEP Polymeric resin 11 kV to 72 kV, medium to very high pollution. Tested to IEC & AS 62217, AS/NZS2947, AS 4899, AS 4435-4, IEC 61952, ANSI C29.5 & CEA LWIWG-02 Pin-Type Insulators: PH-CEP Polymeric resin 11 kV to 36 kV, very high pollution. Tested to IEC & AS 62217, AS/NZS2947, AS 4899, AS 4435-4, IEC 61952, ANSI C29.5 & CEA 11 LWIWG-02 Cutouts: PH-CEP Polymeric resin 27 kV, very high pollution, 216 kV BIL. Tested to ANSI C37.42, IEEE C37.41 Railway Insulators: PH-CEP Polymeric resin 1500 VDC. Tested to IEC & AS 62217, Railcorp standards EP 08000019 SP & EP 08000021 SP Station Post Insulators: PH-CEP Polymeric resin 11 kV to 72 kV, 200 mm to 770 mm high, high to very high pollution, standards: IEC & AS 62217, AS 4398, IEC 60168 Other types of Insulators: Integrated cross arm insulators, PH-CEP polymeric resin, 11 kV to 69 kV, Integrated Clamp Top Materials or Components for Insulators: All EMC Pacific products are manufactured from permanently hydrophobic cycloalipahtic epoxy resin (PH-CEP), a strong yet light material rendered permanently water repellent by a patented silica treatment process.

Total Number of Employees in Insulator Production: 40

BUSHINGS (Polymeric) PH-CEP polymeric resin 3.3 kV to 36 kV, straight, offset transformer type, transformer primary type, seperable connector type, through type, well type

Insulators, Arresters, Bushings & Cable Accessories A Not-to-be Missed Power Industry Event To Mark in Your Calendar Vancouver, Canada, September 8-11, 2013

SALES REPRESENTATION IN FOREIGN MARKETS CANADA & USA: EMC Pacific Holdings Ltd. Tel (1) 250 752 5051, E-mail: sales@emcpacific.com PHILIPPINES: Power Equipment & Supplies Inc. Tel (63) 2 937 3135 NEW ZEALAND: Cuthbert Stewart Limited Tel (64) 4 568 6156.

For information on how to participate please contact: info@inmr.com

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Eximprod Grup Srl.

Head Office: Str. Bistritei, Nr. 3 Buzau 120038, ROMANIA Telephone: (40) 238 710 242 Telefax: (40) 238 710 384 E-Mail: office@eximprod.ro Home Page on the Internet: www.epg.ro Key Contact Personnel: Gheorghe Manole, General Director gheorghe.manole@eximprod.ro Gabriel Enachescu, Commercial Dir. gabriel.enachescu@eximprod.ro Mihai Manole, Sales Manager mihai.manole@eximprod.ro Year Founded: 1994 Total Number of Employees: 300 Total Number of Factory Workers: 200 Quality Certification: ISO 9001, ISO 14001, OHSAS 18001 Total Annual Sales: USD 10 to 15 million (insulators and arresters only) Major Export Markets Served (2012): Germany, Bulgaria, Scandinavia, Switzerland Range of Products Offered: Electrical Insulators (Polymeric) INSULATORS (Polymeric): Suspension Long Rod Type Insulators: 110 - 400 kV, mechanical ratings 120, 160, 210 kN, IEC Station Post Insulators: 123, 145 kV, 8 kN Line Post Insulators: 20 kV, upon request Dead-End Insulators: 20 kV, upon request Railway Insulators: Dead-end, post, 25 kV and upon request Station Post Insulators: 20 - 145 kV Switch Insulators / Bus Insulators: 20 kV Other Types of Insulators: 20 kV and 110 kV interphase spacers, hardware for insulator strings Number of Employees In Insulator Production: 40 ARRESTERS: 20 kV, polymer housed, IEC class 1, 2 Number of Employees In Arrester Production: 10

Georg Jordan GmbH Head Office & Manufacturing: Industriestraße 20, D-53721 Siegburg, GERMANY Telephone: (49) 2241-30 98 0 Telefax: (49) 2241-30 98 38 E-Mail: info@georg-jordan.de

www.georg-jordan.de Key Contact Personnel: Ulrich Jaegers, General Manager u.jaegers@georg-jordan.de Georg Jenke, Sales Manager g.jenke@georg-jordan.de Winfried Schütz, Production Manager w.schuetz@georg-jordan.de Stefan Jutz, Technical Manager s.jutz@georg-jordan.de Rolf-Peter Hiltpold, Quality Manager p.hiltpold@georg-jordan.de Year Founded: 1950 Total Number of Employees: 150 Quality Certification: ISO 9001 Other Certifications: ISO 14001 Total Annual Sales: USD 30 million Manufacturing Plants: Germany, Malaysia Major Export Markets Served (2012): Europe, Asia, South America Range of Products Offered: Electrical Insulators, Bushings, Custom Mouldings

INSULATORS (Polymeric)

Unique, High-Resolution T&D Photos for Catalogues Advertising Conferences Calendars Presentations Books Promotions

Railway Insulators: Cycloaliphatic epoxy Station Post Insulators: Up to 110 kV in epoxy Switch and Bus Insulators: Up to 110 kV in epoxy Other Types of Insulators: Capacitive insulators, custom designed insulators in aromatic and cycloaliphatic epoxy

BUSHINGS Bushings up to 52 kV in aromatic and cycloaliphatic epoxy

SALES REPRESENTATION IN FOREIGN MARKETS Contact Head Office

One source can meet all your needs.

INMR

Please Contact Kenny Ho at: info@inmr.com

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Glasforms Inc. Head Office: 1226 Lincoln Avenue, San Jose, California 95125, UNITED STATES Telephone: (1) 408-297-9300 Telefax: (1) 408-297-0601 E-mail: sales@glasforms.com Manufacturing Plant: 3850 Pinson Valley Pkwy, Birmingham, AL 35217, UNITED STATES

www.glasforms.com Key Contact Personnel: Peter F. Pfaff, President Barry M. White, Vice President, Sales barryw@glasforms.com Miles Hume, QC Manager milesh@glasforms.com Year Founded: 1978 Total Number of Employees: 300 Quality Certification of Plants: ISO 9001:2008 Total Annual Sales: More than USD 50 million Percent of Sales in Export Markets: 30% Major Export Markets Served (2012): Canada, Asia, Europe, South America, Australia & Mexico Range of Products Offered: Materials for Producing Electrical Insulators & Apparatus

MATERIALS FOR ELECTRICAL INSULATORS E-CR & E-Glass fiber reinforced epoxy, vinylester and polyester composite core rod, 12 mm to 120 mm dia. for suspension, line post, dead end, guy strain, railway and switch insulators. Also tubes, bars, ovals, and custom profile shapes in pultrusion and filament wound tubes for other electrical insulating applications; surge arrester housing/ components; motor and fuse tubes; busbar covers; tool handles; cross arms; guy strain and arm bracket insulator rod Annual Production Capacity: 10,000 tonnes Total Employees in Production: 100 Please see ad on page 17

Global Insulator Group LLC LLC "Global Insulator Group" (GIG) is the company that manages distribution and promotion of products of JSC «Yuzhnouralsky Insulators and Fittings Plant», Russia and "Lviv Insulator Company Ltd. ", Ukraine manufacturers of glass and porcelain insulators, line fittings for overhead transmission lines and switchgears, stations and substations with voltages from 0.4 kV to 1150 kV. Head Office: 13/10 Novokonstyantynivska str., Kyiv, 04080, UKRAINE Telephone: (38) 044 206 56 50, (38) 044 206 56 53 Telefax: (38) 044 206 56 51 Manufacturing Plants: JSC Yuzhnouralsky Insulators & Fittings Plant: 1, Zavodskaya Street, Yuzhnouralsk, Chelyabinsk Region 457040, RUSSIA Lviv Insulator Company, Ltd: 301, Zelena Street, Lviv, 79066, UKRAINE E-mail: ved@gig-group.com

www.gig-group.com Key Contact Personnel: Alexander Puchkov puchkov@gig-group.com Year Founded: 2006 Total Number of Employees: 2795 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 50 to 100 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): Europe, Africa, South America, Asia-Pacific regions, Russia and CIS countries Range of Products Offered: Insulators (Glass & Porcelain), Line Fittings

INSULATORS (Glass & Porcelain) Suspension Disc-Type Insulators: Toughened glass insulators of standard, antifog and aerodynamic profiles with mechanical strength from 40 kN to 530 kN. Russian & International Standards: ISO 9001, IEC 120, 305, 372, 383, 575, ANSI C29.2, CAN, BS Pin-Type Insulators: Porcelain insulators with mechanical strength from 8 kN to 13 kN, nominal system voltage from 0.4 kV to 35 kV Railway Insulators: Glass insulators types: U70E, U120B, PSD70E Switch Insulators / Bus Insulators: Porcelain insulators 100 Hz/10 kV: IOR 10-7,5; Iov-1-750 Total Number of Factory Employees: 2480 Total Annual Production Capacity for Glass Insulators: 38,000 tons

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Telephone: (55) 51 3637 4000 Telefax: (55) 51 3637 4040 E-Mail: hidrojet@hidrojet.ind.br

www.hidrojet.ind.br Key Contact Personnel: Rafael Ströher, Market Latin America rafael@hidrojet.ind.br Ronaldo Ruschel, Market U.S. ronaldo.ruschel@hidrojet.ind.br Alexander Berzaghi, Market Europe alexander.berzaghi@microinox.com.br Year Founded: 1980 Total Number of Employees: 640 Total Number of Employees in Production: 570 Quality Certification: ISO 9001:2008, ISO 14001:2004, OSHAS 18001:2007 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): USA, Europe, Canada, India Range of Products Offered: Connectors and Fittings

Hidro Jet Equipamentos Hidráulicos Ltda.

FITTINGS Electrical hardware, connectors and fittings for insulator industries, casting and machining for hydraulic bodies, casting and machining for automotive parts, casting (general), hot dip galvanizing and machining.

Annual Production Capacity: 14,000 tons Please see ad on page 87

Main Office: RS 452, Km 2, Number 3101, Feliz, RS, 95770-000, BRAZIL

Hipotronics, Inc.

Haefely Test AG

Head Office & Manufacturing: Birsstrasse 300, 4052 Basel, SWITZERLAND Telephone: (41) 61 373 4111 Telefax: (41) 61 373 4912 E-Mail: sales@haefely.com Home Page on the Internet: www.haefely.com

Head Office & Manufacturing: 1650 Route 22 North, PO Box 414, Brewster, New York 10509 UNITED STATES Telephone: (1) 845-279-3644 Telefax: (1) 845-279-2467 E-Mail: sales@hipotronics.com Home Page on the Internet: www.hipotronics.com

HIGH-VOLTAGE TEST PRODUCTS: Haefely provides the test, measurement and diagnostic equipment for a wide range of electrical applications. Test systems for laboratory, factory and field use are available.

As a single source supplier we unify powerful resources from design, development, engineering, marketing and support - from high-voltage design over electronics to software in one company.

Key Contact Personnel: Reinhold Grob, Managing Director sales@hipotronics.com Ryan Bares, Sales, Marketing & Product Development Manager sales@hipotronics.com Bill Davis, Finance Manager sales@hipotronics.com Dick Connell, Vice President of Technology sales@hipotronics.com Charlie Consalvo, Manufacturing Manager sales@hipotronics.com Courtney Dulude, International Sales Engineer sales@hipotronics.com Year Founded: 1962 Total Number of Employees: 100 Percent of Sales in Export Markets: 75% Major Export Markets Served (2012): Worldwide Range of Products Offered: High-voltage test products, Cable fault locators, Ultra high voltage DC test systems (UHVDC), Partial discharge measuring instruments, High-voltage test systems, Insulation testers – Instruments for insulation resistance measurement, Custom resonant and impulse test systems, Cable test systems, Measuring bridges, Oil test sets, Test system for electrical machines and transformers, Voltage dividers, and measuring instruments – current measuring shunts, Impulse current test systems, Thumper/Radar fault locators, Acoustical detectors, HV aerial lift test sets, Automatic test system (Hard- and Software) for transformers, switchgears, capacitors, output terminations, bushings, etc.

Company Overview: For over 50 years, Hipotronics has been manufacturing portable high voltage field test and measurement equipment with a reputation as being the industry standard.

SALES REPRESENTATION IN FOREIGN MARKETS: WORLDWIDE: Haefely Test AG Birsstrasse 300, 4052 Basel, SWITZERLAND Tel: (41) 61 373 4111 Fax: (41) 61 373 4912 sales@haefely.com USA / CANADA: Hipotronics Inc. 1650 Route 22 North, PO Box 414, Brewster, NY 10509, UNITED STATES Tel: (1) 845 279-3644 Fax: (1) 845 279 2467 sales@hipotronics.com CHINA: Haefely Representative Office 8-1-602, Fortune Street, No.67, Chaoyang Road, Chaoyang District, Beijing 100025, CHINA Tel: (86) 10 8578 8099 Fax: (86) 10 8578 9908 sales@haefely.com.cn

Sales Representation in Foreign Markets: North America: Hipotronics, Inc. 1650 Route 22 North, PO Box 414, Brewster, NY 10509, UNITED STATES Tel: (1) 845 279-3644, Fax: (1) 845 279 2467, E-Mail: sales@hipotronics.com Worldwide: Haefely Test AG Birsstrasse 300, 4052 Basel, SWITZERLAND Tel: (41) 61 373 4111, Fax: (41) 61 373 4912, E-Mail: sales@haefely.com China: Haefely Representative Office 8-1-602, Fortune Street, No.67, Chaoyang Road, Chaoyang District, Beijing 100025, CHINA Tel: (86) 10 8578 8099, Fax: (86) 10 8578 9908, E-Mail: sales@haefely.com.cn

Key Contact Personnel: Reinhold Grob, Managing Director sales@haefely.com Peter Schikarski, Sales & Marketing Manager sales@haefely.com Lukas Walder, Product Development Manager sales@haefely.com Markus Schneider, Finance Manager sales@haefely.com Michael Gamlin, Manager HV Engineering sales@haefely.com Roman Schönbucher, Manufacturing Manager sales@haefely.com Year Founded: 1904 Total Number of Employees: 130 Percent of Sales in Export Markets: 100% Major Export Markets Served (2012): Worldwide Range of Products Offered: High-voltage test products, Partial discharge measuring instruments, High-voltage spark testers, High-voltage test systems, Insulation testers – Instruments for insulation resistance measurement, Cable test systems, Measuring bridges, Oil test sets, Test system for electrical machines and transformers, Voltage dividers and measuring instruments – current measuring shunts, Impulse current test systems, Automatic test system (Hard- and Software) for transformers, switchgears, capacitors, etc.

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®

Dalian Hivolt Power Systems - continued BUSHINGS As per customer’s requirement Total number of employees in production of bushings: 90

ARRESTERS Surge arresters up to 220 kV, porcelain or silicone rubber housing, for transmission line or substation Total number of employees in production of arresters: 40 Please see ad on page 91

Dalian Hivolt Power System Co., Ltd. Head Office & Manufacturing: No. 39-2-4-1, B3 Block, Ganjingzi District, Dalian 116031 CHINA Telephone: (86) 411 6265 5875 Telefax: (86) 411 3985 8800 ext. 0075 Email: canning@hivoltinsulators.com

www.hivoltinsulators.com Key Contact Personnel: Canning, Sales Manager

canning@hivoltinsulators.com hivoltinsulators@gmail.com Linda Zhao, Sales zhao@hivoltinsulators.com Year Founded: 1992 Total Number of Employees: 460 Number of Employees in Production: 410 Quality Certification: ISO 9000:2008 Total Annual Sales: USD 15 million Percent of Sales in Export Markets: 80% Major Export Markets Served (2012): South America, West Europe, USA, Middle East Range of Products Offered: Insulators (Porcelain, Composite, Glass), Bushings, Arresters

INSULATORS (Porcelain) Disc-Type Insulators: Up to 500 kV, 300 kN, M&E strength according to IEC, ANSI standards. Normal type and fog type Station Post Insulators: Up to 1000 kV, 20 kN bending load, shaping method both isostatic pressing & wet process, comply with ANSI and IEC standards Hollow Insulators for Bushings: For CT, CVT, SF6 and cable terminations up to 1000 kV, Max. single unit height 2.5 m; Max. height with joints 12 m Line-Post Insulators: Up to 138 kV, 20 kN, vertical type and horizontal type, according to ANSI, IEC , BS standards Cutouts: Up to 36 kV with bending load 20 kN Transformer Bushings: Up to 52 kV, according to DIN, ANSI standards Switch Insulators / Bus Insulators: ANSI A20 series & A30 series products or other design as per customer’s specifications Pin-Type Insulators: Up to 36 kV, 10 kN, according to ANSI, IEC, and BS standards Total number of employees in production of insulators: 380 Annual production capacity for insulators: 8500 tons for porcelain

INSULATORS (Composite) Long-Rod Type Insulators: Silicone rubber, up to 800 kV, 210 kN, according to IEC, ANSI standards. End fittings can be designed according to customer’s requirement Line-Post Insulators: Up to 138 kV, 20 kN, vertical type and horizontal type, according to ANSI, IEC, BS standards Pin-Type Insulators: Up to 36 kV, 10 kN, according to ANSI, IEC, and BS standards Dead-End Insulators: From 15 kV up to 46 kV, 70 kN

INSULATORS (Glass) Disc-Type Insulators: Toughened glass, up to 500 kV, 300 kN, M&E strength according to IEC, ANSI standards. Normal type and fog type Continues at top of next column

HSP Hochspannungsgeräte GmbH & Trench Bushing Group Head Office: Camp-Spich-Str. 18, D-53842 Troisdorf, GERMANY Telephone: (49) 2241 2526-0 Telefax: (49) 2241 2526-116 E-Mail: contact@hspkoeln.de Locations of Manufacturing Plants: HSP Hochspannungsgeräte GmbH, Troisdorf / Germany Trench France S.A., Saint-Louis Cedex / France Trench Limited, Ajax Ontario / Canada Trench High Voltage Products Ltd., Shenyang, Shenyang / China Home Page on the Internet: www.bushing-group.com Key Contact Personnel: Carsten-S. Berendsen, Chief Executive Officer (CEO) Manfred Meiger, Chief Financial Officer (CFO) Alexander Doutrelepont, Vice President Sales & Marketing Anne Kretschmann, Marketing Manager Achim Langens, Vice President Technology Year Founded: 1883 Quality Certification: ISO 9001:2008, ISO 14001:2004 Total Annual Sales: Over USD 100 million Percent of Sales in Export Markets: 90% Major Export Markets Served (2012): Worldwide Range of Products Offered: Bushings BUSHINGS : Transformer Bushings: 24 - 1200 kV Switchgear Bushings: 24 - 1000 kV Generator Bushings: 12 - 52 kV HVDC Bushings: 50 - 1100 kV All international standards and special designs according customer requirements.

Sales Representation in Foreign Markets: See on web pages Please see ad on page 81

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Hubbell Power Systems ® (Ohio Brass ) Head Office & Manufacturing: 1850 Richland Avenue E., Aiken, South Carolina 29801, UNITED STATES Telephone: (1) 803-648-8386 Telefax: (1) 573-682-8516 E-Mail: hpsliterature@hubbell.com Location of Other Manufacturing Plants: 8711 Wadsworth Road, Wadsworth, Ohio 44281, UNITED STATES

www.hubbellpowersystems.com Key Contact Personnel: Elizabeth Siefkas, Int’l Customer Service easiefka@hubbell.com Crystal Mistretta, Advertising/Brand Mgr. hpsliterature@hubbell.com Total Number of Employees: More than 1000 Quality Certification: Wadsworth ISO 9001:2000; Aiken ISO 9001:2000 Total Annual Sales: Over USD 100 million Major Export Markets Served (2012): Southeast Asia, Asia, Africa, South America, Mexico, Canada, Europe Major Products Offered: Electrical Insulators (Polymeric, Silicone), Arresters (Porcelain & Polymeric), Bushings

INSULATORS (Polymeric/Silicone) Suspension Insulators: 15 kV to 765 kV at ratings of 15K lbs (70 kN) to 80K lbs (345 kN); SML to ANSI and IEC Line-Post Insulators: 35 kV to 765 kV to ANSI Dead-End Insulators: 15 kV to 765 kV at ratings of 15K lbs (70 kN) to 80K (345 kN) SML to ANSI, IEEE, CSA, IEC Railway Insulators: Upon application Station Post Insulators: 15 kV to 500 kV Switch Insulators / Bus Insulators: 150 through 900 kV BIL, 3” (76 mm) and 5” (127 mm) bolt circles Other Types of Insulators: Braced line posts, pivoting-V assemblies, hardware & insulator packages

ARRESTERS Porcelain-housed: DynaVar Type 3 kV-800 kV, IEC Class 3-5, ANSI Station and Intermediate; Polymer-housed: DynaVar Type 3 kV-230 kV, IEC Class 1-3, ANSI Distribution, Riser, Station and Intermediate; elbow arresters, polymer cable terminations 15 kV-35 kV

BUSHINGS SALES REPRESENTATION IN FOREIGN MARKETS International Dept.: Tel: (1) 573-682-8304, Fax: (1) 573-682-8516 E-mail: hpsliterature@hps.hubbell.com Hubbell de Mexico S.A. de C.V.: Tel: (52) 55-9151-9999, Fax.: (52) 55-9151-9988 E-mail: vtasdf@hubbell.com.mx Electro Composites (2008) ULC (Hubbell Power Systems): Tel: (1) 450-431-2777, Fax: (1) 450-431-2717 E-Mail: electrocomposites@hubbell.com Please see ad on Inside Back Cover

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Hübers Verfahrenstechnik Maschinenbau GmbH Head Office: Schlavenhorst 39, D-46395 Bocholt, GERMANY Telephone: (49) 2871 281-0 Telefax: (49) 2871 281-1250 E-Mail: info@huebers.de

www.huebers.de Key Contact Personnel: - General management by members of the owner family - Production and engineering management by a team of specialists for the different sections of construction and manufacturing - R&D by interdisciplinary workgroups in own fully equipped Technical Development Center - Sales management by a team of 6 engineers, responsible for different world regions For further information, please contact Hübers’ head office Year Founded: 1937 Total Number of Employees: 140 Quality Certification: ISO 9001:2008 Percent of Sales in Export Markets: 85% Major Export Markets Served (2012): Worldwide Total Annual Sales: USD 20 to 50 million Range of Products Offered: Production machinery

PRODUCTION MACHINERY Machines and complete production lines for casting, injection, and impregnation of electrical and electronic parts, e. g. insulators, arresters, reclosers, bushings, and transformers: Vacuum and Atmospheric Mixing, Metering, and Casting Systems; Material Compounding and Preparation; Systems for Automatic Pressure Gelation (APG); Clamping Machines for APG; Compact Solutions, Micro-Casting Systems; Impregnation Systems; Oven Systems; Laboratory and Special Systems.

Hübers’ process engineering covers production with any thermosetting resin system (epoxy, PU) as well as processing liquid silicone rubbers, including the patented Silicone Vacuum Treatment SVT® for absolutely void-free parts.

SALES REPRESENTATION IN FOREIGN MARKETS CHINA: Huebers (Xiamen) Trading Co., Ltd. Tel: (86) 592 2961682, E-mail: saleschina@huebers.com JAPAN: Hübers Japan Co., Ltd. Tel: (81) 3 58193820, E-mail: s_kurata@huebersjapan.com Besides these company branch offices, Hübers has sales representatives all over the world. For contact information of your “local dealer”, please visit www.huebers.de or contact Hübers’ head office.

Please see ad on page 87

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Huntsman Advanced Materials

Head Office: Klybeckstrasse 200, CH-4057 Basel, SWITZERLAND Telephone: (41) 61 299 1111 Telefax: (41) 61 299 1112 E-Mail: advanced_materials@huntsman.com Location of Manufacturing Plant: Monthey (Switzerland), Macintosh (United States), Sao Paulo (Brazil), Bad Saeckingen (Germany), Panyu (China) Home Page on the Internet: www.huntsman.com/power Key Contact Personnel: Ulrich Massen, ulrich_massen@huntsman.com European Marketing Manager Electrical Engineering & Electronic Christian Beisele, Technical Mgr. Europe christian_beisele@huntsman.com Year Founded: 1884 (ex. Ciba) Total Number of Employees: 2300 Quality Certification: ISO 9001 Total Annual Sales: USD 20 to 50 million in the areas of insulators, arresters, bushings, and cable terminations Percent of Sales in Export Markets: 99% Major Export Markets Served (2012): All major countries Range of Products Offered: ARALDITE® Casting and Impregnating Resin Systems as Electrical Insulation Materials for Insulators and Insulating Applications MATERIALS FOR ELECTRICAL INSULATORS: Indoor Applications - ARALDITE® bis-A and bis-F epoxy systems Outdoor Applications -Standard ARALDITE® cycloaliphatic and ARALDITE® HCEP hydrophobic casting systems forelectrical insulation purposes in outdoor service Introducing: ARALDITE® SHCEP semi-flexible casting system for housings of composite insulators combined with ARALDITE® matrix systems for insulator rods SALES REPRESENTATION IN FOREIGN MARKETS: ASIA PACIFIC - CHINA: Tel (86)2122087618, Fax (86)2122087605, E-mail: walter_lam@huntsman.com Contact: Walter Lam SOUTH-AMERICA - BRAZIL: Tel (55) 11 5532 7357, E-mail: marivaldo_almeida@huntsman.com Contact: Marivaldo Almeida JAPAN: Tel (81) 78 304 3937, Fax (81) 78 304 3970 E-mail: masahiro_nakajima@huntsman.com Contact: Masahiro Nakajima USA: Tel (1) 281 719 4490, Fax (1) 281 719 4011 E-mail: dawn_adair@huntsman.com Contact: Dawn Adair Please see ad on page 83

Insulators & Electricals Company Head Office & Manufacturing: 1-8, New Industrial Area, PB No.1, Mandideep, Dist. Raisen, MP- 462 046, INDIA Telephone: (91) 7480 407900/901 / 902 / 903, 400800 Telefax: (91) 7480 233329 / 400843 E-Mail: sales@iec-insulators.com Home Page on the Internet: www.insulatorsindia.com

Key Contact Personnel: R.K. Ladia, CEO rkladia@insulatorsindia.com J. B. Agrawal, President jbagrawal@insulatorsindia.com Ravi Kumar Singh, General Manager, Exports ravikumarsingh@insulatorsindia.com N. Bhandari, General Manager, Marketing naresh.b@insulatorsindia.com V. R. Shrivastava, General Manager, Marketing vrshrivastava@insulatorsindia.com Year Founded: 1986 Total Number of Employees: 750 Quality Certification: BS EN ISO 9001:2008, ISO 14001:2004 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 25% Major Export Markets Served (2012): Europe, China, Latin America, USA, Middle East, South East Asia, South Africa Range of Products Offered: Porcelain Insulators INSULATORS (Porcelain): Station Post Insulators: 11 kV to 765 kV as per IEC 168/IEC 273 & ANSI C29.9, creepage distance up to 31 mm/ kV Insulators for Bushings: For high strength SF6 breakers/ CT / PT / CVT / VT/ IT up to 765 kV range. Single piece up to 2500 mm height Insulators for Arresters: Up to 525 kV range Insulators for Cable Terminations: Up to 525 kV range Long-Rod type Insulators: 45 kN to 210 kN as per IEC 60433; coupling: Ball & Socket/ Tongue & Clevis Suspension Disc-Type Insulators: 45 kN to 160 kN as per IEC 305 and EN 60305 and ANSI C 29-2 Normal and Anti-Fog type, coupling: Ball & Socket / Tongue & Clevis Line-Post Insulators: 11 kV to 66 kV as per IEC 720 and ANSI C 29.7 Railway Insulators: For 25 kV traction lines Other Types of Insulators: Electrostatic Precipitator, Roof Insulators and Pantamount Insulators Total Number of Employees in Insulator Production: 750 Annual Production Capacity for Insulators: 16,500 MT

A feast of 500 unique images guaranteed to captivate your interest and imagination… and all bound together in a handsome 320+ page hardcover book (A4 size) that you can learn from and enjoy any moment of the day.

To preview the book and order your copy, please visit www.inmr.com/inspiringjourney/ or email us at: info@inmr.com

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Indústria Eletromecânica Balestro Ltda.

Head Office & Manufacturing: Rua Santa Cruz, 1550, Mogi Mirim, SP 13800-970, BRAZIL Telephone: (55) 19-3814 9000 Telefax: (55) 19-3814 9003 E-Mail: sales@balestro.com

www.balestro.com Key Contact Personnel: Valentino Balestro, President valentino@balestro.com Renato Ganzella, Plant Director renato-g@balestro.com Carlos Eduardo Balestro, General Dir. eduardo@balestro.com Marcos Alex Morinigo, Business Dir. marcos@balestro.com Year Founded: 1952 Total Number of Employees: 340 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 25 to 50 million Percent of Sales in Export Markets: 12% Major Export Markets Served (2012): Latin America, USA, Africa Range of Products Offered: Surge Arresters (Polymeric Distribution, Station, Transmission Line), Insulators (Polymeric), Fuse Cutout (Polymeric), Discharge Counter, Varistor (Block)

INSULATORS (Polymeric) Distribution Dead End and Suspension: 15 to 45 kV, up to 80 kN Distribution Dead End and Suspension with Aluminum Fittings: 15 to 45 kV, 50 kN Transmission Dead End and Suspension (AC): 35 to 750 kV, up to 300 kN Transmission Dead End and Suspension (DC): 600 to 800 kV, up to 300 kN Post Type: 15 to 34 kV, up to 10 kN Line Post Type: 69 to 230 kV, up to 20 kN

SURGE ARRESTERS (Polymeric) Distribution: 3 to 42 kV; 5 kA and 10 kA Station Class, IEC class 2: 6 to 144 kV Station Class, IEC class 3: 6 to 245 kV Transmission Line, IEC class 2: 6 to 245 kV Transmission Line, IEC class 3: 6 to 336 kV

FUSE CUTOUT (Polymeric) Distribution Fuse Cutout C-Base: 15 to 38 kV

VARISTOR (Block)

www.isoelectric.it Key Contact Personnel: Rosario Scarpetta, President & Marketing Alberto Scarpetta, Technical & Sales Manager Robert van Asperen, Sales Department robert@isoelectric.it Perla Albanese, Sales Department perla@isoelectric.it Federica Premoli, Sales Department federica@isoelectric.it Brazil Branch Sales Department isoelectric@isoelectric.com.br Year Founded: 1968 Total Number of Employees: 60 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 70% Major Export Markets Served (2012): South America, Far East, Europe, Asia Range of Products Offered: Electrical Insulators (Polymeric), Arresters, Bushings

INSULATORS (Polymeric) Long-Rod Type Insulators: In silicone rubber from 10 kV up to 800 kV, 360 kN Line-Post Insulators: In silicone rubber from 10 kV to 800 kV Pin-Type Insulators: From 10 kV to 36 kV in silicone rubber Strain/Guy Insulators: In silicone rubber from 10 kV to 500 kV, 300 kN Dead-End Insulators: As above Railway Insulators: In silicone rubber from 600 V DC up to 25 kV AC; all types Station Post Insulators: Polymeric in silicone rubber from 10 kV to 800 kV for outdoors and in epoxy resin from 3.6 kV to 36 kV for indoors Insulators for Bushings: In epoxy resin from 3 kV to 150 kV for indoors and for indoor-outdoor Switch Insulators / Bus Insulators: In epoxy resin from 3 kV to 36 kV and in polymeric silicone rubber from 10 kV to 400 kV Insulators for Arresters: Silicone rubber from 3 kV to 400 kV Other Types of Insulators: Capacitive insulators; interphase spacers; other types according to customer drawings Total Number of Employees in Insulator Production: 45 Annual Production Capacity for Insulators: 1800 tonnes

Bushings in epoxy resin for indoors, from 3 kV to 150 kV and from 250 A to 4000 A; bushings for indoors/outdoors in cycloaliphatic resin and silicone rubber from 3 kV up to 150 kV and from 250 A up to 4000 A

OTHER DISCHARGE COUNTER, FUSE HOLDER: 15 to 34 kV Please see ad on page 52

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Head Office & Manufacturing: Via Lodi 14, 26010 Bagnolo Cremasco (CR) ITALY Telephone: (39) 0373-234 311/648 165 Telefax: (39) 0373-234 165 E-mail: info@isoelectric.it Branch: Av. Pref. Domingos Mocelin Neto 753, 83.420.000 Quatro Barras -PR, Brazil Telephone: (55) 41 3554 1514 Telefax: (55) 41 3554 1473 E-mail: isoelectric@isoelectric.com.br

BUSHINGS

Block: 3 to 5 kV, 5 and 10 kA, class 1 Block: 3 to 5 kV, 10 kA, class 2 Block: 3 to 5 kV, 10 kA, class 3

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Isoelectric s.r.l.

ARRESTERS In ZnO from 6 kV up to 400 kV housed in silicone rubber, from 5 kA to 20 kA

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HELPING YOU

CREATE THE FUTURE TRANSFORMERS, INSULATORS AND BUSHINGS ANALYSIS SOFTWARE Optimization through parametrics or scripting

Integrated Engineering Software Head Office: 220-1821 Wellington Avenue, Winnipeg, MB R3H 0G4, CANADA Telephone: (1) 204-632-5636 Telefax: (1) 204-633-7780 E-Mail: info@integratedsoft.com

www.integratedsoft.com Key Contact Personnel: Bruce Klimpke, Technical Director Dafne Orbach, Marketing Manager Year Founded: 1984 Total Number of Employees: 20+ Percent Export Sales: 97%

ANALYZE AND MODEL: ELECTRIC FIELD

PARTIAL DISCHARGE INCEPTION

SKIN AND PROXIMITY EFFECTS

MAGNETIC FORCE

REAL WORLD TRANSIENTS

THERMAL ANALYSIS

bklimpke@integratedsoft.com dorbach@integratedsoft.com

FEATURES Design of high voltage equipment and other devices utilizing electric fields require accurate calculation of the electrical stress in order to reduce flashover or meet many other design criteria.

Unlike most other physical disciplines, often a very large air space around the electrical device has to be included in the model. Thus, special modeling techniques like the Boundary Element Method have been developed which makes the solution of these very challenging problems a simple matter.

PUT OUR SOFTWARE TO THE TEST Send us your model, whatever the level of complexity.

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Established in 1984, Integrated Engineering Software is a developer of hybrid simulation tools for electromagnetic and particle trajectory design analysis. Integrated provides a line of fully integrated 2 and 3 dimensional simulation software, with thermal capabilities and system simulation for a multidisciplinary approach. Accurate and easy to use, Integrated’s products allow engineers and scientists to help reduce design cycles, save time and money and deliver products to the market faster.

SALES REPRESENTATION IN FOREIGN MARKETS CHINA Robert JAPAN Tetsuya Yamakura INDIA Deepak Pingle KOREA Monica Lee Please see ad on same page

zxl@tianyuantech.com tetsuya.yamakura@terrabyte.co.jp deepak.pingle@amdlsed.com monica@rndtech.co.kr

Call +1 204.632.5636 email info@integratedsoft.com or visit www.integratedsoft.com

transformer_ad.indd 1

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Jilin LongXin Electrical Equipment Co., Ltd. Head Office & Manufacturing: No. 13 Tie he xi Road, Chang Yi District, Jilin City, Jilin 132002 CHINA Telephone: (86) 432-6273 5266 Telefax: (86) 432-62733015 E-Mail: jllongxin@gmail.com

www.jllongxin.com Key Contact Personnel: Sun Xue, International Trade Manager jllongxin@gmail.com Lin Xuewei, V.P. Production jilinlongxin2@163.com Ni Hongyan, Chief Engineer & Head of Techical Department jilinlongxin2@163.com Year Founded: 2006 Total Number of Employees: 280 Total Number of Employees in Production: 140 Quality Certification: GB/T 19001-2008 / ISO 9001:2008 Total Annual Sales: USD 20 to 50 million Range of Products Offered: Composite Insulators

INSULATORS (Composite) Long-Rod Type Insulators: 10 kV up to 750 kV, specified mechanical load 70 kN up to 550 kN, according to China National Standards and IEC Standards Line-Post Insulators: 110 kV to 220 kV Pin-Type Insulators: 10 kV Strain / Guy Insulators: 10 kV, 35 kV, 66 kV, 110 kV, 220 kV Railway Insulators: 25 kV suspension, cantilever type DC Composite Insulators: ±500 kV, ±660 kV, ±800 kV, specified mechanical load: 100 kN up to 550 kN Annual Production Capacity: over 350,000 pcs

Hundreds of Valuable Technical Articles from INMR Archives

Jinan Meide Casting Co., Ltd. Head Office Address: No. 3 Nanmen Road, Pingyin, Jinan 250400 CHINA Telephone: (86) 531 87879384, (86) 531 87875059 Telefax: (86) 531 87879387 E-Mail: jtimech@meide-casting.com

www.meide-casting.com Key Contact Personnel: Qi Xiaoyu, Vice President qixiaoyu@meide-casting.com Su Zhaoxia, Sales Manager suzhaoxia@meide-casting.com Sally Zhang, Sales export5@meide-casting.com Year Founded: 1962 Total Number of Employees: 5000 Number of Employees in Production: 4000 Quality Certification: ISO 9001, ISO14001 Percent of Sales in Export Markets: 70% Major Export Markets Served (2012): Italy, Brazil, USA, India, Argentina, South Africa, Germany, France, etc.

Range of Products Offered: End fittings and insulator caps

METAL END FITTINGS AND INSULATOR CAPS Number of Employees in Production of End Fittings and Insulator Caps: 1000 Product Range: Caps, Flanges, Bases, End Fittings, Pole Line Hardware, Cast Bronze Components, Railway Metal Product Standard: IEC120 with Ball & Socket 11-32 (GB/T 4056 and JB/T 8178) Ball & Socket of ANSI 52.3, 52.5, 52.8, 52.11 Material: 1. Black Heart Malleable Cast Iron: ISO 5922 (Malleable Cast Iron) Grade 350-10 (EN 1562, ASTM A197, GB9440-80) 2. Ductile Cast Iron: ASTM A536 65-45-12 or 60-40-18 (EN 1563 450-12 or 400-18) GB/T1348 3. Surface: Hot-dipped Galvanizing according to ISO1461 (IEC383-1983) Specification: The Ball & Socket Size: 10-32 The Mechanical Load Rating: 40-820KN The Tube Reference: 023-760 With or without Zinc Collar (For AC or DC Insulator) Service: Jinan Meide also could produce all kinds of ductile iron, malleable iron, or grey cast iron end fittings or components according to the samples or drawings supplied by the clients Please see ad on page 53

Available on-line at:

www.inmr.com The Best Web Site in the Business

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K-Line Insulators Ltd. Head Office & Manufacturing: 50 Passmore Avenue, Toronto, Ontario M1V 4T1, CANADA Telephone: (1) 416-292-2008 Telefax: (1) 416-292 -2094 E-mail: insulators@k-line.net

www.k-line.net Key Contact Personnel: A.J. Carreira, President carreira@k-line.net Randy Cole, V.P. Sales & Marketing rcole@k-line.net Sebastian Marra, Engineering smarra@k-line.net Angela Matias, Administration amatias@k-line.net Raj Ranjanathan, Quality Assurance wranjanathan@k-line.net Gordon Willoughby, Sales gwilloughby@k-line.net Roberto Gomez, Sales rgomez@k-line.net Year Founded: 1983 Total Number of Employees: 85 Quality Certification: ISO 9001:2000 Percent of Sales in Export Markets: 55% Major Export Markets Served (2012): Asia Pacific, Middle East, Caribbean, Central America, South America, North America, Scandinavia Range of Products Offered: Electrical Insulators (Polymeric) 15 kV to 500 kV

INSULATORS (Polymeric) Suspension Type Insulators: Silicone Line Post Insulators: Silicone Strain / Guy Insulators: Silicone Deadend Insulators: Silicone Railway Insulators: Silicone Station Post Insulators: Silicone Switch Insulators / Bus Insulators: Silicone Other: Silicone-insulated live-line tools, riser support insulators, interphase spacers Total Number of Factory Employees: 65

SALES REPRESENTATION IN FOREIGN MARKETS UNITED STATES: K-Line Insulators USA Inc. 200 Buell Road, C-11, Rochester, New York 14624, USA Tel: (1) 585-235-2870, Fax: (1) 585-235-3292, E-Mail: k-lineusa@k-line.net LATIN AMERICA & CARIBBEAN: K-Line Insulators Limited (Mexico Office) Tel: (52) 55 2734 1340, Cel: (52) 55 4458 9326, E-Mail: rgomez@k-line.net ALL OTHER COUNTRIES: Contact Head Office or go to website

Kaleseramik Çanakkale Kalebodur Seramik San. A.S. Insulator Sales and Marketing Management: Uskudar Icerenkoy Caddesi Bodur Is Merkezi No:8 K:6 D:24 34752 Icerenkoy-Istanbul, TURKEY Telephone: (90) 216 577 60 13-14 Telefax: (90) 216 577 60 15 E-Mail: endereraslan@kale.com.tr Factory Address: Canakkale Seramik Fab. 17430 Can-Canakkale, TURKEY Telephone: (90) 286 416 17 17 Telefax: (90) 286 416 24 93 E-Mail: serdarozcan@kale.com.tr

www.kaleinsulator.com Key Contact Personnel: Yalcin Yazici, yalcinyazici@kale.com.tr Insulator Sales & Marketing Manager Ender Eraslan, endereraslan@kale.com.tr Insulator Marketing & Export Sales Manager Serdar Ozcan, Insulator Production Manager serdarozcan@kale.com.tr Year Founded: 1960 Total Number of Employees: 6000 Total Number of Insulator Factory Workers: 250 Quality Certification: ISO 9000, ISO 14000, ISO 18001, ISO 50001 Total Annual Sales: USD 12 to 20 million Percent of Sales in Export Markets: 10% Major Export Markets Served (2012): Iraq, Jordan, Egypt, Kosovo, Portugal, Turkmenistan, Iran , Canada, Saudi Arabia, Oman Range of Products Offered: Electrical Insulators (Porcelain & Polymeric) Annual Production Capacity for Insulators: 11,000 tons

INSULATORS (Porcelain) Suspension Disc-Type Insulators: U40BL, U60BL, U70BL, U80BL, U100BL, U120BL, U160BL, U60BLP, U70BLP, U80BLP, U100BLP, U120BLP, IEC60383, IEC 60797, IEC60575, IEC60120, IEC60372, ANSI-C29.2 Long-Rod Type Insulators: L40 (40 kN), L70 (70 kN); L100 (100 kN), DIN 40685 Line-Post Insulators: Up to 36 kV line post insulators, minimum bending failing load 800-1250 kg, IEC 60273, DIN 40685 Pin-Type Insulators: Up to 36 kV pin type insulators, minimum bending failing load 1200 kg, creepage distance between 250 mm to 900 mm, DIN 40685 Low Voltage Insulators: Up to 1 kV low voltage insulators, minimum bending failing load up to 89 kN, creepage distance between 60-160 mm, DIN 48150, ANSI-C-29.4 Railway Insulators: Normal insulation and antipollutional types, IEC 60060, IEC 60060-1 Wall Bushings: Indoor-Indoor and Outdoor-Indoor types wall bushing insulators Transformer Bushings: Up to 36 kV, nominal current 250 A, 630 A, 1250 A, 2000 A, 3150 A High Voltage Post Insulators: Up to 170 kV high voltage post insulators, IEC 60273, IEC 60168 Other Types: Fuse tubes and wire holders

INSULATORS (Silicone) Silicone Insulators: 36 kV 40 kN, 36 kV 100 kN, 170 kV 100 kN, 420 kV 160 kN, 420 kV 210 kN Silicone Railway Insulators: Hoban-Console Types

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Kuvag Isola Composites GmbH

Head Office & Manufacturing: Isolastraße 2, D-52353 Düren, GERMANY Telephone: (49) 2421 808-5800 Telefax: (49) 2421 808-5802 E-Mail: sabine.kauer@kuvag-isola.com Home Page on the Internet: www.kuvag.com Key Contact Personnel: Christoph Raszczyk, Managing Dir. cra@kuvag-isola.com Bernd Schröder, Technology bernd.schroeder@kuvag-isola.com Dennis Lippe, Technology dennis.lippe@kuvag-isola.com Total Number of Employees: 50 Quality Certification: ISO 9001:2008, SVTI (501, 704) Major Export Markets Served (2012): China, Switzerland, France, India, Brazil, Mexico Range of Products Offered: Electrical Insulation Materials for Insulators and Insulating Applications MATERIALS FOR ELECTRICAL INSULATORS: Filament Wound Composite Tubes: Machined and raw tubes include assembled (bonded) metal parts: Applications: - Bushings (800 kV) - Switch Insulators (800 kV) - Switch Rods (800 kV) - Vacuum Impregnated Switch Rods (1100 kV) - Cable Terminations - Transformers - Generator Switches - High Voltage Test Products (1200 kV) Materials Used: - Glass - Aramid - Polyester Maximum Inner Diameter: 2000 mm Components: Machined and assembled (bonded) composites parts for arresters Total Number of Factory Workers: 50 Current Production Capacity: 50,000 tubes per year

Lapp Insulators GmbH Head Office & Manufacturing: Bahnhofstrasse 5, D-95632 Wunsiedel, GERMANY Telephone: (49) 9232-50 192 Telefax: (49) 9232-50 106 Location of Manufacturing Plants: Wunsiedel/Germany, Redwitz/Germany, LeRoy/USA, Jedlina/Poland, Turda/Romania E-Mail: sales@lappinsulators.de

www.lappinsulators.de Key Contact Personnel: Bernhard Kahl, CEO bkahl@lappinsulators.de Veronika Capek, CFO vcapek@lappinsulators.de Rob Johnson, COO rjohnson@lappinsulator.com Peter Besold, Director Sales pbesold@lappinsulators.de Mathias Wernitz, Director International Sales mwernitz@lappinsulators.de Timo Höfer, Director Key Account Sales thoefer@lappinsulators.de Jens Seifert, GM Business Unit Engineering Services jseifert@lappinsulators.de Year Founded: 1900 Number of Employees: 1100 Quality Certification: DIN EN ISO 9001:2000 & DIN EN ISO 14001 Total Annual Sales: USD 150 to 200 million Percent of Sales in Export Markets: 60% Major Export Markets Served (2012): Europe, Middle East, Asia, Americas, Africa, Russia, India Range of Products Offered: Electrical insulators (porcelain, composite) for apparatus, substations and transmission lines, engineering services Brand Names: RODURFLEX, SIMOTEC

INSULATORS (Porcelain, Polymeric)

Insulators, Arresters, Bushings & Cable Accessories

Comes to One of the World’s Most Scenic Cities For information on how to participate please contact: info@inmr.com

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Long-Rod Type Insulators: Ceramic and Rodurflex HTV silicone rubber composite insulators, all transmission voltages and all mechanical strength ratings Suspensions (Disc) Insulators: Porcelain, ANSI designs all voltage classes Line-Post Insulators: Ceramic and Rodurflex HTV silicone rubber composite, all voltage classes Medium Voltage Insulators: Ceramic and Simotec MV LSR composite insulators up to 33 kV Railway Insulators: Ceramic and Rodurflex HTV silicone rubber composite, all voltage classes Station Post Insulators: Ceramic and Rodurflex HTV silicone rubber composite, all voltage classes Insulators for Bushings: Ceramic and Simotec LSR silicone rubber composite, all voltage classes Switch Insulators/Busbar Insulators: Ceramic and Simotec LSR silicone rubber composite, all voltage classes Insulators for Arresters: Ceramic and Simotec LSR silicone rubber composite, all voltage classes Insulators for Cable Terminations: Ceramic and Simotec LSR silicone rubber composite, all voltage classes Annual Production Capacity for Insulators: Approx. 30,000-40,000 tonnes Number of Employees in Production: 900

2013 Buyer’s Guide & directory

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MacLean Power Systems - continued Hollow Core Insulators: 15 kV - 765 kV; silicone rubber composite, variable leakage compatibility for section lengths; custom lengths available; cylindrical or conical shapes; arrester housings; insulators for bushings, measuring transformers, cable terminations, live/dead tank breakers Optical Insulators: Solid or Hollow Core Composites with imbedded optical fibers.

ARRESTERS

MacLean Power Systems Head Office: 481 Munn Rd, Suite 300, Fort Mill, South Carolina 29715 UNITED STATES Telephone: (1) 803-628-4300 E-Mail: webmaster@macleanpower.com

www.macleanpower.com Key Contact Personnel: Tom MacDonald, V.P. Customer Services tmacdonald@macleanpower.com Grady Denton, Electrical OEM Sales Manager gdenton@macleanpower.com Damon DeSantis, Marketing Director, Transmission Products ddesantis@macleanpower.com Rick Gruendel, North America Transmission Sales Manager rgruendel@macleanpower.com Kent Davenport, Customer Services Manager, Transmission Products kdavenport@macleanpower.com Mike Valenza, Product Manager, Arresters & Fiberglass Products mvalenza@macleanpower.com Ed Niedospial, Product Manager, Overhead Transmission Products eniedospial@macleanpower.com Doug Moore, Product Manager, Substation Products dmoore@macleanpower.com Giulio Rocchetti, Marketing Director, Hollow Core Insulator Products grocchetti@macleanpower.fr Year Founded: 1986 Total Number of Employees: over 1000 Number of Employees in Production: Over 800 Quality Certification: ISO 9001:2000 Total Annual Sales: Over USD 100 million Percent of Sales in Export Markets: 25% Major Export Markets Served (2012): Central/South America, Africa, Middle East & Asia Range of Products Offered: Electrical Insulators (Composite), Arresters (Polymeric), T&D Hardware, Fiberglass, Connectors

INSULATORS (Composite) Suspension Type Insulators: 15 kV - 1000 kV; 15 kip - 90 kip (67 kN - 400 kN), silicone rubber composite formulation; variable leakage compatibility for section lengths; custom lengths available; complete line of ANSI, IEC end-fittings; product complies to all major published standards Line Post Insulators: 15 kV - 500 kV; 1.5 in. - 3.5 in. (38 mm - 89 mm) rod diameters; silicone rubber composite formulation; variable leakage capability for a fixed section length Staywire / Guy Strain Insulators: Included in product range Dead-End Insulators: 15 kV - 1000 kV AC (800 kV DC); same offering as for suspension insulators Railway Insulators: 15 kV - 35 kV Station Post Insulators: 7 kV - 1000 kV Switch Insulators / Bus Insulators: 7 kV - 500 kV Other Types of Insulators: Braced post assemblies; bell equivalent 35 kV - 69 kV; jumper insulators; phase spacers; capability to package insulator and hardware as complete assembly Continues at top of next column

Polymer Housed: Zforce Distribution, 5 kA ZNP, 10 kA ZHP, 10 kA ZRP Riser Pole - 3 kV - 36 kV, and 10kA SHP Silicone. ZIP intermediate class - 3 kV - 144 kV, ZSP Station Class - 3 kV - 198 kV, ZQPT Transmission Line Arresters - 36 kV - 144kV, ZXLA Transmission Line Arrester/Insulator Assembly - 46 kV - 161 kV, SurgeTec Secondary 175, 480, 650 V

FIBERGLASS PULTRUSIONS Glass fiber reinforced epoxy; vinylester and polyester composite core rod; 12 mm to 76 mm diameter for suspension, line post, dead end, guy/strain, railway and switch insulators. Also tubes, bars, ovals, and custom profile shapes.

FUSE CUTOUTS Polymer and porcelain housed for systems rated 4.16kV through 25kV, Arrester-Cutout Assembly

FIBERGLASS CROSSARMS Deadend PY - Light duty, PZ Heavy Duty, and Tangent - PX Standard Duty and PW Heavy Duty

OTHER TYPES Secondary Service; Nylon Wireholders; Porcelain Spool Insulators

LOCATION OF MANUFACTURING PLANTS 11411 Addison Ave., Franklin Park, Illinois 60131-1130, UNITED STATES Telefax: (1) 847-455-0029 Telephone: (1) 847-455-0014 1909 Highway 97, Alabaster, Alabama 35007, UNITED STATES Telefax: (1) 205-621-0531 Telephone: (1) 205-663-4912 3098 Pelham Parkway, Pelham, Alabama 35124 UNITED STATES Telefax: (1) 205-663-2440 Telephone: (1) 205-663-0765 101 Park Ave., Newberry, South Carolina 29108, UNITED STATES Telefax: (1) 803-276-2199 Telephone: (1) 803-276-4462 7801 Park Place Rd., PO Box 949, York, SC 29745-0949, UNITED STATES Telefax: (1) 803-684-4940 Telephone: (1) 803-684-4208 225, boul. Ford Chateauguay, Quebec, J6J 4Z2, CANADA Telefax: (1) 692-5670 Telephone: (1) 450-698-0520 Rue de la Verrerie, St. Yorre, 03270, FRANCE Telephone: (33) 4-70-58-84-23 Telefax: (33) 4-70-58-84-21 No. 339 PingZhong Road, TaiPing Township; CongHua City; Guangzhou, CHINA Please see ad on page 11

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®

GuangZhou Meansun Machinery & Mould Co., Ltd.

Maxwell Technologies SA Head Office & Manufacturing: Rte de Montena, CH-1728 Rossens, SWITZERLAND Telephone: (41) 26 411 8500 Telefax: (41) 26 411 8505 E-Mail: hvsales@maxwell.com

www.maxwell.com Key Contact Personnel: Sacha Jenny, VP & General Manager sjenny@maxwell.com Adrian Schneuwly, Sr. Dir. Sales & Mktg. aschneuwly@maxwell.com Year Founded: 1903 Total Number of Employees: 150 Total Number of Factory Workers: 60 Quality Certification: ISO 9001: 2000 / ISO 14000: 1996 / OHSAS-18001 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 95% Major Export Markets Served (2012): China, United States, Germany, France, Sweden, Korea Range of Products Offered: Capacitors

CAPACITORS (Porcelain, Glass, Polymeric) - Grading and coupling capacitors (porcelain, composite, glass GFK), up to 500 kV nominal voltage per unit - CVD (porcelain, composite), up to 800 kV nominal voltage - Special and Laboratory capacitors (porcelain, composite, glass GFK), PD level < 1.2 pC, > 1,000kV nominal voltage - AC and DC PLC / filter capacitors - HVDC grading capacitors - DC voltage dividers - MV capacitors for - Partial discharge measurement - Energy management - Protection of power generator breaker - Distribution automation and smart metering - HVDC voltage distribution Total Number of Employees in Capacitor Production: 60

SALES REPRESENTATION IN FOREIGN MARKETS CHINA: Maxwell Technologies Inc. Shanghai, Unit 2A, B, C 12th Floor, Hua Run Times Square, No.500 Zhangyang Road, Pudong New Area, Shanghai, 200122, CHINA INDIA: Western India Sales Pvt., Ltd.: 15 4th Floor, Srinath Commercial Complex, Sarojimi Devi Road, Secundererabad 500 003, INDIA KOREA: Woo Kwang Chemical Co., Ltd: Suite 433World Vision Bldg., 24-2, Yoido-Dong, Youngdenngpo-Ku, Seoul 150 877, KOREA Please see ad on page 43

Head Office: No.25 Huafu Road, Donghua Industrial Park, Renhe Town, Baiyun District, Guangzhou 510470 CHINA Telephone: (86) 20 8645 0382 Telefax: (86) 20 8645 7191 E-Mail: ms0382@21cn.com Home Page on the Internet: www.meansun.com.cn Key Contact Personnel: Liang JianPing, Mangement gzms01@21cn.com Liu BaoRong, Mangement Centre Head ms0382@21cn.com Yang JianLian, Business Centre angel2001977@163.com Xu WeiLun, Business Centre Head gzbyxd@163.com Year Founded: 1991 Total Number of Employees: 60 Number of Employees in Production: 45 Quality Certification: ISO 9001:2000 Percent of Sales in Export Markets: 50% Estimated Percent of Sales in Export Markets for 2011: 70% Total Annual Sales: Less than USD 3 million Major Export Markets Served (2012): USA, India, Iran, Mexico, and Argentina Range of Products Offered: CNC, CNC Lathe, EDM, Longmen CNC, Wire EDM

Meister International LLC

Head Office: 11080 Stephens Road, North Bend, Ohio 45052 UNITED STATES Telephone: (1) 513 923-2712 Telefax: (1) 513 923-1978 E-Mail: sales@meisterintl.com Home Page on the Internet: www.meisterintl.com Key Contact Personnel: Mark Meister, President mark.meister@meisterintl.com Year Founded: 2003 Major Export Markets Served (2012): USA, Canada, Mexico, Malaysia, Saudi Arabia, Peru Range of Products Offered: Insulators INSULATORS: Porcelain Insulators, Glass Insulators, Polymeric (Composite) Insulators * All insulators are made to ANSI & IEC standards.

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A Celebration of Ageless Wisdom, Beauty and Electrical System Design To preview the book and order your copy, please visit www.inmr.com/inspiringjourney/ or email us at: info@inmr.com

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Plea

Mekufa B.V.

Head Office: Bevert 1, 7681 ZE Vroomshoop, NETHERLANDS Telephone: (31) 546-642 667 Telefax: (31) 546-643 525 Location of Manufacturing Plants: Vroomshoop Netherlands, Gloucester United Kingdom, Istanbul TURKEY E-Mail: info@mekufa.nl Home Page on the Internet: www.mekufa.nl

Midsun Midsun Group Group Inc. Inc.

Key Contact Personnel: Niels Peters, Managing Director peters@mekufa.nl Wim de Vries, Production Manager wdv@mekufa.nl Richard Bergman, Project Manager bergman@mekuka.nl Year Founded: 1953 Total Number of Employees: 150 Total Number of Factory Workers: 110 Quality Certification: ISO 9001 (Vroomshoop Netherlands, Gloucester, Istanbul Turkey) Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 90% Major Export Markets Served (2012): Germany, France, Switzerland, Sweden, Ukraine, Italy, Portugal Range of Products Offered: Electrical Insulators (Polymeric), Bushings Cable Terminations.

Head Office:135 Redstone Street, Southington, Connecticut 06489, Head Office: 135 Redstone Street, Southington, Connecticut 06489, UNITED STATES UNITED STATES Telephone: (1) 860-378-0100 Telefax: (1) 860-378-0103 Telephone: (1) 860-378-0100 Telefax: (1) 860-378-0103 E-mail: info@midsungroup.com E-mail: info@midsungroup.com

INSULATORS (Polymeric): Suspension Insulators: Up to 110 kV (IEC, ANSI) Line-Post Insulators: Up to 110 kV (IEC, ANSI) Dead-End Insulators: Cycloaliphatic epoxy Railway Insulators: 25 kV cables for railway rolling stock Station Post Insulators: Up to 110 kV in epoxy Insulators for Cable Terminations: From 72.5 kV to 550 kV Other types of Insulators: All types of barrier and support insulators from 72.5 kV to 800 kV; other types of insulators in cycloaliphatic and aromatic epoxy manufactured to custom design.

Total Number of Employees In Insulator Production: 100

MATERIALS FOR INSULATORS & INSULATOR COATINGS MATERIALS FOR INSULATORS & INSULATOR COATINGS

www.midsungroup.com www.midsungroup.com

BUSHINGS: Custom-designed bushings in cycloaliphatic and aromatic epoxy, both in vacuum casting and automatic pressure gelation SALES REPRESENTATIVES IN FOREIGN MARKETS: UKRAINE: Mekufa UA: Vorovskogo Str. 36, 2nd, 01054 Kiev Tel: (380) 44 482 33 16 / Fax: (380) 44 482 33 15 E-Mail: info@mekufa.kiev.ua, Web site: www.mekufa.kiev.ua UNITED KINGDOM: Mekufa UK Ltd.: Unit 1. PGL Park Bristol Road, GL1 5SR Gloucester; Tel: (44) 1452 520850 / Fax: (44) 1452 520852 E-Mail: sales@mekufa.co.uk, Web site: www.mekufa.co.uk TURKEY: EDE Mekufa: Tuzla Kimyacılar O.S.B. Kristal Cd. No.14 Tuzla Istanbul, 34956 Tel: (90) 216 593 90 50 / Fax: (90) 216 593 90 60 E-Mail: info@edemekufa.com, Web site: www.edemekufa.com

Key Contact Personnel: Key Contact Personnel: Robert Vojtila, President vojtirf@midsungroup.com Robert Vojtila, President vojtirf@midsungroup.com Brad MacCulloch, General Manager bradleym@midsungroup.com Brad MacCulloch, General Manager tiradaw@midsungroup.com bradleym@midsungroup.com Andy Tirado, USA & Int’l Sales Andy Tirado, USAUSA & Int’l Sales tiradaw@midsungroup.com Todd Tremaglio, & Int’l Sales toddtremaglio@midsungroup.com Todd Founded: Tremaglio, USA & Int’l Sales toddtremaglio@midsungroup.com Year 1992 Year Founded: 1992 USD 10 to 15 million Total Annual Sales: Total Annual Sales: USD 10 to 15 million Midsun 570 High Voltage Insulator Coating Midsun 570 Voltagefor Insulator Coating Midsun 579High Silprocoat corrosion Midsun 579 Silprocoat for Covers corrosion Midsun Silicone Bushing and Silicone Lead Wrap Midsun Silicone Bushing Covers and Silicone Lead Wrap

SALES REPRESENTATIVES IN FOREIGN MARKETS SALES REPRESENTATIVES IN FOREIGN MARKETS

Epsilon Asia Group. X-29 Hauz Khas, New Delhi - 110016, INDIA Epsilon Asia Group.

X-29 Hauz Khas,Asian New Delhi - 110016, INDIA Neelash Arora, Managing Director, Markets Neelash Arora, Managing Asian Markets Tel: +91.11.4101.4888 Fax:Director, +91.11.4102.2525 Tel: +91.11.4101.4888 Fax: +91.11.4102.2525 Central and South America: Central RICA and South COSTA C: FSAmerica: Sistemas, S.A., POBox: 85-1225 Plaza Mayor, COSTA RICA C: FS Sistemas, S.A., PlazaSur, Mayor, Oficentro Palacio, Oficina #2., De POBox: Abonos85-1225 Agro 100m 200m Oeste Oficentro Oficina De296-9061 Abonos Agro San José, Palacio, COSTA RICA Tel:#2., (506) Fax:100m (506)Sur, 296200m 9062Oeste San José, COSTA RICA Tel:cferraro@cfscr.com, (506) 296-9061 Fax: (506) 296 9062 Mobile: (506) 870-90057, www.cfscr.com Mobile: (506) 870-90057, cferraro@cfscr.com, www.cfscr.com

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F A X TO: T O :(1) ( 1514-939-6151 ) FAX OR E-MAIL O R E - M TO: A I L dzhang@inmr.com T O: d z h a n g or: danna.inmr@gmail.com

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Modern Insulators Ltd. Head Office & Manufacturing: Talheti, Aburoad, Rajasthan 307510, INDIA Telephone: (91) 2974-228044 up to 47 and 294440 Telefax: (91) 2974-228043/221098 E-Mail: milabu@moderninsulators.com

www.moderninsulators.com Key Contact Personnel: Sachin Ranka, Director corporate@modern-group.com Deepak B Deshpande, Sr. President dbd@moderninsulators.com Rajeev Vyavahare, V.P. Marketing rv@ moderninsulators.com Vijay Shah, Sr. Joint V.P. Marketing vshah@moderninsulators.com Year Founded: 1984 Total Number of Employees: 962 Quality Certification: ISO-9001: 2000, ISO-14001: 2004 Total Annual Sales: USD 50 to 100 million Percent of Sales in Export Markets: 40% Major Export Markets Served (2012): Europe, USA, Latin America, Australia, Africa, Russia, Iran, Turkey, Malaysia Range of Products Offered: Insulators (Porcelain)

INSULATORS (Porcelain) Long-Rod Type Insulators: From 33 kV to 765 kV range, standards applicable IEC, ANSI, DIN, IS Line-Post Insulators: From 33 kV to 66 kV, standards applicable IEC, ANSI, DIN, IS Railway Insulators: 25 kV Station Post Insulators: From 33 kV to 765 kV range, standards applicable IEC, ANSI, DIN, IS Hollow Insulators: For SF6 Circuit-Breaker, Cable Terminations, CT, CVT, PT; range 33 kV to 800 kV, max. diameter 650 mm, height 2600 mm in single piece and joined up to 5000 mm Total Number of Factory Workers: 678 Current Production Capacity of Insulators: Porcelain - 20,000 M.T.

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Motic (Xiamen) Electric Group Co., Ltd. Head Office & Manufacturing: Motic Industrial Park, No. 808 Fang Shan Nan Road, Xiang An, Xiamen 361101 CHINA Telephone: (86) 592 5676408 Telefax: (86) 592 5626612 E-Mail: info@motic-electric.com

www.motic-electric.com www.motic.com Key Contact Personnel: Hollis Li, General Manager hollis@motic-electric.com Adam Wu, Sales Manager China Market wufuai@motic-electric.com Robin Lin, Export Sales Manager robin@motic-electric.com Stefan Rosenblattl, Manager Europe Market, A-Linz stefan.rosenblattl@motic-electric.at Hans J. Wieland, Business Development wieland@motic-electric.com Year Founded: 1997 Total Number of Employees: 500 Total Number of Factory Workers: 400 Quality Certification: ISO 9001: 2000, ISO 14001, ISO (OHSAS) 18001, REACH Total Annual Sales: USD 50 million Percent of Sales in Export Markets: 25% Major Export Markets Served (2012): Europe, Asia Pacific, Middle East (direct exports) Range of Products Offered: Polymeric Insulators and Insulating Components for the Electric Power Industry

INSULATORS (Polymeric) Insulating Components: For Medium and High Voltage Apparatus from 10 kV to 550 kV Services include: Component Engineering and Designing, Molding Tool Designing and Manufacturing, Process Technology and Product Testing.

Main Insulating Materials: Epoxy Resins, Epoxy-FR Composites, Epoxy and Polyester SMC and BMC Please see ad on page 69

2013 Buyerâ&#x20AC;&#x2122;s Guide & directory

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Newell-PSN, LLC

Head Office & Manufacturing: 500 Harrison Street, Newell, WV 26050, UNITED STATES Telephone: (1) 304-387-2700 Telefax: (1) 304-387-2792 E-Mail: sales@newellporcelain.com Home Page on the Internet: www.newellporcelain.com www.psncomponents.com Key Contact Personnel: Hemal Desai, President/CEO psncomp@aol.com Rahul Parikh, Director Rick Stanley Sr., VP Mktg. & Sales rickstanley@newellporcelain.com Dwayne Gillingham, Sales Manager sales@newellporcelain.com Year Founded: 1989 Quality Certification: ISO Certification Percent of Sales in Export Markets: 20% Major Export Markets Served (2012): Mexico, Canada, Central America, Latin America, Middle East, Africa, Philippines Range of Products Offered: Electrical Insulators (Porcelain), Bushings, Cable Terminations

Norsk Teknisk Porselen AS

INSULATORS (Porcelain and Toughened Glass): Suspension Insulators: Full ANSI 52 series. All types for AC & DC applications; max voltage 1000 kV, mechanical strength upto 530 kN; ANSI, IEC, DIN and IS standards Long-Rod Type Insulators: 33 kV to 765 kV; ANSI, IEC, DIN and IS standards Line-Post Insulators: 7.5 kV to 138 kV, ANSI and IEC standards Pin-Type Insulators: full line upto 44 kV, ANSI and IEC standards, RUS accepted Spool Insulators: Full line ANSI Standard Strain / Guy Insulators: Full line ANSI Standard Dead-End Insulators: As requested Railway Insulators: As requested Station Post Insulators: Full line, 7.5 kV to 765 kV, ANSI, IEC, DIN, and IS Standards Insulators for Bushings: for transformer; Porcelain from LV to 500 kV as per customer drawings Hollow Insulators: For SF6 Circuit Breaker Bushings, Cable Terminations; CT, CY, CVT, PT, as per customer drawings Switch / Bus Insulators: 7.5 kV to 765 kV, ANSI, IEC, DIN, and IS standards Insulators for Arresters: 7.5 kV to 500 kV Insulators for Cable Terminations: As per customer drawings Materials or Components for Insulators: Porcelain Coatings for Insulators: Silicone coating available

New Zealand Insulators Ltd. Head Office & Manufacturing: Thomas Street, P.O. Box 5, Temuka 7948, NEW ZEALAND Telephone: (64) 3-687 8100 Telefax: (64) 3-615 8125 E-Mail: sales@nzinsulators.co.nz Home Page on the Internet: www.nzinsulators.co.nz

Nexans Suisse S.A.

Head Office & Manufacturing: Trosvikstranda 46-48, P.O. Box 188, N-1601 Fredrikstad, NORWAY Telephone: (47) 69-38 30 00 Telefax: (47) 69-38 30 30 E-Mail: terje.thomassen@ntp-as.no / rune.johannessen@ntp-as.no

www.ntp-as.no Key Contact Personnel: Terje Thomassen, Marketing Manager terje.thomassen@ntp-as.no Rune Johannessen, Tech.-Int. Sales Mgr. rune.johannessen@ntp-as.no Björn Hansson, Managing Director bjoern.hansson@ntp-as.no Year Founded: 1916 Total Number of Employees: 37 Quality Certification: ISO 9001: 2000 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): Worldwide Range of Products Offered: Electrical Insulators (All types)

INSULATORS (Porcelain, Glass, Polymeric) Suspension Disc-Type Insulators: For Norway only. IEC types Line-Post Insulators: Porcelain 12 kV - 72.5 kV Pin-Type Insulators: Porcelain 12 kV - 36 kV Spool Insulators: All porcelain types Strain/ Guy Insulators: Porcelain 12 kV - 25 kV Dead-End Insulators: Porcelain types up to 45 kN Railway Insulators: According to railway company specs. Composite Station Post Insulators: IEC / ANSI-NEMA types up to 420 kV Insulators for Bushings: Wall-Roof Bushings 12 kV - 72.5 kV standard and customer-design, hollow cylindrical insulators up to 1800 mm in length Switch / Bus Insulators: Porcelain types, Hollow cylinders up to 1800 mm in length Insulators for Arresters: Housings for custom-designed arresters Insulators for Cable Terminations: 12 kV - 145 kV types / custom designs Other Types of Insulators: Composite insulators 12 kV - 36 kV, insulators for electrostatic precipitators (ESP) Total Number of Factory Workers: 30 Annual Production Capacity for Insulators: 2500 tonnes

Address: CH-1305 Penthalaz, SWITZERLAND Telephone: (41) 21 861 81 11 Telefax: (41) 21 861 83 10 E-Mail: peter.bracher@nexans.com Home Page on the Internet: www.nexans.com

NGK Insulators, Ltd. Head Office: 2-56 Suda-cho, Mizuho-ku, Nagoya 467-8530, JAPAN Telephone: (81) 52-872-7511 Telefax: (81) 52-872-7530 E-Mail: pr-office@ngk.co.jp Home Page on the Internet: www.ngk.co.jp

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Key Contact Personnel: Jung-soo Seo, Manager uijae@uijae.com Year Founded: 1997 Total Number of Employees: 50 Number of Employees in Production: 6 Quality Certification: ISO 9001 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): India, Philippines, Indonesia, China, Germany Range of Products Offered: Testing Equipment, Lightning Protection

TESTIING EQUIPMENT Impulse Voltage Generator: 1.2 x 50 µs, 500 kV, 20 kJ Impulse Current Generator: 10 x 350 µs, 50 kA, RLC Type Impulse Current Generator: 8 x 20 µs, 120 kA, RLC Type D.C High Voltage Generator: DC 0 - 300 kV Tesla Coil: AC 220, 50/60 Hz, 1000 kV

Omni LPS Co., Ltd.

LIGNTNING PROTECTION

Head Office: Seonyudo Kolon Digital Tower 301, Yangpyeong-ro 22-gil 21, Youngdeungpo-gu, Seoul 150-105 KOREA Telephone: (82) 2-2062-5027 Telefax: (82) 2-2632-4529 E-mail: uijae@uijae.com

Bipolar Conventional Air Terminal Carbon Ground Module SPD: power, signal Special Polymer Insulator Lightning Arrester for Infrastructure Please see ad on page 51

www.omnilps.com

Ofil Ltd.

Head Office & Manufacturing: 16 Einstein Str., Weizman Science Park, P.O. Box 4016, Nes-Ziona 74000, ISRAEL Telephone: (972) 8-9407953 Telefax: (1) 888-950-5557 E-Mail: info@ofilsystems.com Home Page on the Internet: www.OfilSystems.com www.DayCor.com | www.CITI-training.com Key Contact Personnel: Moshe Goldbaum, CEO Ofil@OfilSystems.com Year Founded: 1993 Quality Certification: ISO 9001:2008 Major Export Markets Served (2012): North America (USA + Canada), Latin America, Europe, Asia, Africa, Middle East, Oceania Range of Products Offered: High Sensitivity Corona Detection Systems and UV Inspection Solutions. Range of products include compact handheld, UAV, airborne, vehicle mounted and railway automatic systems Products: Hand held corona detecting systems - Luminar - Superb - UVollé Airbone corona detecting systems - ROM - UAV ROMpact Vehicle mounted corona detection systems - Ranger - Rail SBUV imaging systems Made-to-order SBUV inspection solutions Sales Representation in Foreign Markets: Distributors locator at: http://www.ofilsystems.com/contact/distributors.html Please see ad on page 53

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Pars Electrical Transmission Equipment Co. (Pars E.T.E. Co.)

Head Office: No. 35, East Boalisina Ave., Chehelsoton St., Dr. Fatemi Sq., Tehran 14316, IRAN Telephone: (98) 21 88974091-3 Telefax: (98) 21 88974095 Location of Manufacturing Plant: P.O.Box : 81395-178, Isfahan,Iran Telephone: (98) 311 3804779 & 3804427 E-Mail: info@parsete.com Home Page on the Internet: www.parsete.com Key Contact Personnel: M. S. Mirghafoorian, Managing Dir. ms.mirghafoorian@parsete.com M. Nourbakhsh, Factory Manager sm.nourbakhsh@parsete.com Z. Zal, Station Class Manager info@parsete.com Year Founded: 1990 Quality Certification: ISO 9001:2000 Total Annual Sales: USD 5 to 6 million Range of Products Offered: LV/MV/HV Surge Arresters PRODUCTS: LV Arresters: ZnO block-molded epoxy resin housing; 300 V - 3 kV voltage rating MV Arresters: 3.3 kV - 36 kV voltage rating; 5 - 10 kA current rating; equipped with explosive disconnecting device • Porcelain housed with both end pressure relief • Direct molded silicon housed arresters with LSR & HTV material • Indoor panel type (without shed) Station Class Surge Arresters: • "PAE" Series: Designed by Pars E.T.E; from 20 kV up to 420 kV; Porcelain housed; pressure relief capability up to 65 kA; LD class 2 to 5; current rating up to 20 kA • "3EP" Series: Under the license of Siemens; from 20 kV up to 765 kV Surge Counter: Equipped with leakage current meter and surge counting device.

Arrester Monitoring Device (AMD): Portable device for measuring total & resistive current; using third harmonic analysis of leakage current with voltage harmonic compensation; display current curve on color LCD; communication via USB to PC; arrester condition analysis software

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Pfisterer www.pfisterer.com Key Contact Personnel: Frank Schmuck (OHL) frank.schmuck@sefag.ch Wolfgang Huiber (OHL) wolfgang.huiber@sefag.ch Manfred Peter (Sales) manfred.peter@sefag.ch Eduardo Santana (Sales) eduardo.santana@sefag.ch Jürgen Kraus (CS) juergen.kraus@ixosil.ch Ruben Grund (CS) ruben.grund@pfisterer.de Total Number of Employees: 1,400 Quality Certification: ISO 9001:2008 Total Annual Sales: Euro 250 million (unconsolidated) Major Export Markets Served (2012): Worldwide

OVERHEAD LINE PRODUCTS FROM 1 kV UP TO 1000 kV Silcosil silicone composite insulators, complete insulator strings, conductor fittings, Vibration-damping products including vibration recorders, Warning spheres

CABLE SYSTEMS PRODUCTS FROM 6 kV UP TO 300 kV CONNEX, the dry MV and HV cable connection system for transformers and GIS, IXOSIL HV cable terminations and joints, IXOLINE assembled cables, global installation services

OTHER PRODUCTS Components: Bolted connectors for LV and MV cables, high-current connectors for industrial applications, safety equipment like voltage detectors and earthing devices Railway Catenary Systems: Connecting terminals for catenary wires Silicone insulators and section isolators. TENSOREX, the automatic spring retensioning system, Catenary wire position measuring devices, Safety-related products

SALES REPRESENTATION IN FOREIGN MARKETS Contact head office info@pfisterer.com for representative details by country or visit website

Polytech Services Co. Head Office: 12169 Balls Ford Rd., Manassas, VA 20109, UNITED STATES Telephone: (1) 703-257-1500 E-Mail: polytechservices@earthlink.net Home Page on the Internet: www.polytechservicescorp.com

Phenix Technologies, Inc. Head Office & Manufacturing: 75 Speicher Drive, Accident, MD 21520, UNITED STATES Telephone: (1) 301 746-8118 Telefax: (1) 301 895-5570 E-Mail: info@phenixtech.com

www.phenixtech.com Key Contact Personnel: Carol Margroff, Marketing Coordinator carol@phenixtech.com Joe Thomas, Director of Operations joe@phenixtech.com Year Founded: 1989 Total Number of Employees: 130 Total Number of Factory Workers: 80 Quality Certification: ISO 9001 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): Korea, Vietnam, Saudi Arabia, United Arab Emirates, Italy, India Range of Products Offered: Testing Equipment

TESTING EQUIPMENT AC and DC dielectric test systems, partial discharge detectors, RIV measurement systems, AC/DC kilovoltmeters Please see ad on page 69

Polycast

Head Office & Manufacturing: 965 Sherwin Road, Winnipeg, Manitoba R3H 0T8 CANADA Telephone: (1) 204 632-5428 Telefax: (1) 204 697-0314 E-Mail: sales@polycast.ca Home Page on the Internet: www.polycast.ca Key Contact Personnel: Marek Kornowski, Engineering Manager engineering@polycast.ca Arthur Erhardt, Engineering Sales sales@polycast.ca Year Founded: 1972 Total Number of Employees: 80 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 10 to 20 million Major Export Markets Served (2012): United States, Mexico, Europe, Australia, Asia, Central America Range of Products Offered: Bushings - Polymeric/Composite, Electrical Insulators (Polymeric) INSULATORS (Polymeric): Switch Insulators/Bus Insulators: Up to 250 kV BIL and special types according to specific customer requirements .

BUSHINGS: Transformer Bushings: Transformer and switchgear bushings up to 250 kV BIL and special types according to specific customer requirements

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Senses and Determines GO / NOGO Safety Status for Live Transmission Line Work Crews Senses and Predicts High Voltage Insulator Failure Insulator Testers Available for Both Porcelain and Composite

Radiant Enterprises Head Office & Manufacturing: Plot No. C1/351/2 - GIDC, Makarpura, Vadodara-10, Gujarat, INDIA Telephone: (91)265-2647056 / 2975390 Telefax: (91) 265-2631358 E-Mail: sipolycrete@hotmail.com & risilicone@hotmail.com

www.shantarainsulators.in

Positron Head Office & Manufacturing: 5101 Buchan St., Suite 220, Montreal, Quebec H4P 2R9, CANADA Telephone: (1) 514-345-2220 Telefax: (1) 514-345-2271 E-Mail: info@positronpower.com

www.positronpower.com Key Contact Personnel: Salvatore Carbonaro, Mgr. Systems Engineering info@positronpower.com Sandra Cohen, Director of Marketing info@positronpower.com Year Founded: 1970 Quality Certification: ISO 9001:2000 Major Export Markets Served (2012): Asia Pacific, Australia, Colombia, India, Iran, Italy, Peru, Canada, United States, Korea, China Range of Products Offered: Insulator Testers

INSULATORS TESTERS Suspension Disc-Type Insulators: Up to 1 MV, glass and porcelain Long-Rod Type Insulators: Up to 1 MV, skirt diameter 110 mm to 170 mm Line-Post Insulators: Any size and shape > 25 kV Pin-Type Insulators: Any size and shape > 25 kV Spool Insulators: Any size and shape > 25 kV Strain / Guy Insulators: Any size and shape > 25 kV Dead-End Insulators: Up to 1 MV, composite, glass and porcelain Cutouts: Any size and shape > 25 kV Switch Insulators / Bus Insulators: Any size and shape > 25 kV Insulators for Cable Terminations: Any size and shape > 25 kV Materials or Components for Insulators: Any Coatings for Insulators: Any

FEATURES

Key Contact Personnel: Aashish Dholakia, CEO sipolycrete@hotmail.com Rakesh Doshi, Manager aashish_dholakia@hotmail.com Year Founded: 1995 Total Number of Employees: 100 Quality Certification: ISO 9000:2008 certification from DUNS Total Annual Sales: USD 5 Million Percent of Sales in Export Markets: 60%. Goods supplied in the domestic market from Shantara Insulators and exports from Radiant Enterprises.

Major Export Markets Served (2012): USA, Brazil, Mexico, France, China Range of Products Offered: Electrical Insulators, Bushings, Accessories for Surge Arresters

INSULATORS Stand Off Insulators: From 400 V to 72 kV Support Insulators: Up to 72 kV Bus Duct Insulators: Up to 33 kV GIS Insulators: For SF6 Application Insulators for Fuse Cut Outs: Up to 150 kV BIL Station Post Insulators: Up to 33 kV Pin-Type Insulators: Up to 33 kV Insulators for Bushings: Up to 33 kV Insulators for Surge Arrester / Switchgear: 415 V - 72 kV Production Production Capacity for Insulators: 10 tons / day

BUSHINGS Transformer & apparatus bushing up to 33 kV

ARRESTERS Insulating bases, ZnO blocks, & disconnectors, up to 120 kV

ACCESSORIES FOR SURGE ARRESTERS Insulating Bases for SA: Up to 1200 kV Disconnecters: 5 kA / 10 kA

Based on AC Electrical Field measurements; Used as Standalone device or with Windows interface; “GO / NOGO” indicators (visual and audible) for transmission line personnel safety

INSULATORS Tester for insulators of any size and shape, voltage greater than 25 kV

CABLE TERMINATIONS Tester for insulators used for cable terminations of any size and shape, voltage greater than 25 kV

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Reinhausen Power Composites GmbH Member of MR Group

REP International

Head Office & Manufacturing: Eschenbacher Str. 4, 93057 Regensburg, GERMANY Telephone: (49) 941 4090 2860 Telefax: (49) 941 4090 500 E-Mail: rpc@reinhausen.com

Head Office: 15, rue du Dauphiné, 69964 Corbas, FRANCE Telephone: (33) 4 72 21 53 53 Telefax: (33) 4 72 51 22 35 E-Mail: commercial@repgroup.net

www.reinhausen.com/pc Key Contact Personnel: Juergen Hauck, General Manager j.hauck@reinhausen.com Roland Hoefner, Production r.hoefner@reinhausen.com Armin Merten, R&D a.merten@reinhausen.com Mihai Purenciu, Quality m.purenciu@reinhausen.com Georg Schuetz, Sales g.schuetz@reinhausen.com Year Founded: 2009 (spin off from Maschinenfabrik Reinhausen GmbH, founded 1901) Total Number of Employees: 180 Total Number of Employees in Production: 150 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): USA, EU, Switzerland, India, China, Eastern Europe Range of Products Offered: Hollow Composite Insulators, FRP Insulating Tubes

INSULATORS (Polymeric / Composite) Insulators for Bushings: Up to 1100 kV AC and 800 kV DC Insulators for Arresters: Up to 1100 kV AC and 800 kV DC Insulators for Cable Terminations: Up to 1100 kV AC and 800 kV DC Insulators for Instrument Transformers: Up to 1100 kV AC and 800 kV DC Insulators for Circuit Breakers: Up to 1100 kV AC and 800 kV DC Other Types of Insulators: Insulators for capacitors Insulators for indoor applications FRP insulation tubes (raw and machined) for different operating temperatures Hollow Core Post Insulator up to 800 kV DC Materials or Components for Insulators: E-glass, epoxy resin, epoxy resin glue, cast aluminum alloy, liquid silicone rubber (LSR) Annual Production Capacity for Insulators: Approx. 20,000 pieces Please see ad on page 73

www.repinjection.com www.repinjection.cn Key Contact Personnel: Pascal Consolaro Sales Manager Asia-Pacific pconsolaro@repgroup.net Year Founded: 1907 Total Number of Employees: 160 Quality Certification: ISO 9001: 2008 Percentage of Sales in Export Market: 90% Major Export Markets Served (2012): Asia, Europe, America Range of Products Offered: Production machinery

PRODUCTION MACHINERY 1. Rubber Injection Machine and moulds : Clamping force from 5 T to 2400 T, capacity up to 120 Iiters 2. Silicone Injection Machine and moulds (for both solid and liquid silicone rubber): Clamping force from 5 T to 2400 T 3. Cold Runner Block, Valve gates, Vacuum, Mold…

4. Turnkey project

SALES SUBSIDIARIES IN FOREIGN MARKETS REP CHINA Room 406, Xingyuan Century Building, Anyuan Road N°20, Chaoyang District, Beijing 100029, CHINA (86) 10 6420 6766 (86) 10 6446 2210 REP INJECTORA DE BORRACHA Avenida Antártico, n°401, Jardim do Mar, São Bernardo do Campo, CEP 09726-150 Sao Paulo, BRAZIL (55) 11 4125 7950 (55) 11 4125 6525 REP DEUTSCHLAND Sauergasse 5-7, 69483 Wald-Michelbach, GERMANY (49) 6207 9408.0 (49) 6207 6632 REP ITALIANA Via Volta 23/B, 10040 Druento (TO), ITALY (39) 11 42 42 154 (39) 11 42 40 207 REP CORPORATION 8N470 Tameling Court, Bartlett, Illinois 60103-8146, UNITED STATES (1) 847 697 7210 (1) 847 697 6829 REP MATERIALS AND TECHNOLOGIES LLC Office 701, 20 Zeleny avenue, Moscow, 11397, RUSSIA (7) 495 708 44 86

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RHM International HV DryShield® and RIF™

RHM International, LLC

RHM International: The specialist in high voltage, high reliability dry type insulation.

high performance products are of unique dry type providing: Head OfficeAll &our Manufacturing: 81 Glen Road, Brookline, MA 02445, maintenance-free, leak free, explosion-free and environmentally-friendly operation up to 550 kV. Featuring UNITED STATES our HV DryShield® and RIF™ state of the art technologies: 20 years of a proven, unmatched track record Telephone: (1) 617 608 0274 Telefax: (1) 617 608 0274 High Voltage Transformer and Breaker Bushings E-Mail: info@rhmintl.com 20kV up to 300 kV – proprietary RIF™ resin impregnated fiber glass condenser graded Home PageBushings on the from Internet: www.rhmintl.com insulation – meets all IEC / IEEE requirements with a specific high resistance to mechanical stress and

A. Salvi & C. S.p.A.

temperature shocks.

Key Contact Personnel: Eric Euvrard, President High Voltage Wall Bushings eric.euvrard@rhmintl.com Year Founded: •2003Condenser graded type Wall Bushings from 20kV up to 300 kV Proprietary Dry Type HVISO DryShield® PTFE14001 based core insulation designs — meet or exceed all IEC / IEEE Quality Certification of Plants: 9001 & ISO Percent ofrequirements.

Sales in Export Markets: 75% Main Office & Manufacturing: Via E. Cosenz 32, I-20157 Milano, ITALY (39) 02-3767-151 Telefax: (39) 02-3767-15222 Major Export Markets Served (2012): Worldwide • Special Bushings for laboratory or testing: Proprietary Dry Type HV DryShield® Telephone: dry type - up to 1200 kV. meet / IEEE applicable requirements – Design Range of Productscondenser Offered: designs High Voltage Bushings & IEC Transformers.

E-Mail:available salvi@salvi.eu for Oil-Air / SF6-Air partitions.

HIGH VOLTAGE TRANSFORMER & BREAKER BUSHINGS: Bushings from 20 kV up to 300 kV - proprietary RIF™ resin impregnated fiber glass condenser graded insulation - meets all IEC / IEEE requirements with a specific high resistance to mechanical stress and temperature shocks.

HIGH VOLTAGE WALL BUSHINGS: • Condenser graded type wall bushings from 20 kV up to 300 kV Proprietary Dry Type HV DryShield® PTFE based core insulation designs - meet or exceed all IEC / IEEE requirements.

• Special bushings for laboratory or testing: Proprietary Dry Type HV DryShield® dry type condenser designs - up to 1200 kV, meet IEC / IEEE applicable requirements - Design available for Oil-Air / SF6 - Air partitions.

All products are of unique dry type providing: Maintenance-free, leak free, explosion-free and environmentally-friendly operation up to 550 kV. Featuring HV DryShield® and RIF™ technologies with 20 years of proven track record.

www.salvi.eu Key Contact Personnel: A. Tufari, President & CEO a.tufari@salvi.eu M. Muggiasca, General Manager muggiasca.dop@salvi.eu F. Vismara, Sales Manager f.vismara@salvi.eu G. Sangalli, Technical Manager sangalli.lab@salvi.eu A. Introini, Design Manager a.introini@salvi.eu M. Doardo, Purchasing Manager doardo.app@salvi.eu Year Founded: 1920 Total Number of Employees: 65 Quality Certification: ISO 9001:2008 valid until Jan. 19, 2015 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 95% Major Export Markets Served (2012): Brazil, South Africa, Libya, Egypt, Gulf Emirates, Canada, Saudi Arabia, USA Range of Products Offered: Hardware, Connectors and Fittings

www.inmr.com

FITTINGS

Got Technical Questions?

Hardware and fittings for EHV transmission lines; galvanized or stainless steel hardware for overhead ground wiresuspension/tension set; special fittings for OPGW (suspension/tension sets, downleads); vibration dampersfor conductors up to 55 mm dia.; vibration dampers for ground wires (standard and OPGW); spacer-dampers for conductor bundles (twin, triple,quadruple, sextuple, and octagonal) with spacings from 400 mm to 600 mm; rigid spacers (twin, triple, quadruple) with spacings from 200 mm to 600 mm; suspension clamps (std or trunion type) for aluminum and copper conductors; aluminum compression dead-end clamps for monometallic and bimetallic conductors; aluminum alloy bolted strain clamps for aluminum conductors; special alloy bolted strain clamps for copper conductors; patented extruded aluminum alloy railway crossarms.

Annual Production Capacity: 5000 tonnes Total Number of Factory Workers: 40 Please see ad on page 95

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PPC Insulators - Seves Group Global Sales Head Office: Wienerbergstrasse 11, 1100 Vienna, AUSTRIA Telephone: (43) 1-982 5850-0 Telefax: (43) 1-982 5850-1540 E-Mail: info@ppcinsulators.com Location of Manufacturing Plants: PPC Insulators Austria GmbH: Gamserstrasse 38, 8523 Frauental, AUSTRIA Elektrokeramik Sonneberg GmbH: Werkringstraße 11, 96515 Sonneberg, GERMANY PPC Cab AS: Čab 268, 951 24 Nové Sady, SLOVAKIA IFÖ Ceramics AB: Fågel Fenix Väg 12, 29531 Bromölla, SWEDEN Isoladores Santana SA: Rua Antonio Pedro, 645, Centro, 13920.000 Pedreira - SP, BRAZIL PPC Asian Insulators Ltd.: 254 Seri Thai Rd. Kannayaow, Bangkok 10230, THAILAND PPC Wuxi Insulators Co. Ltd.: Zhaqiao Town, Xishan District, Wuxi, CHINA

www.ppcinsulators.com www.isantana.com.br Key Contact Personnel: Werner Wippel, Global Sales Director Johannes Gebhart, Sales Director Europe Elias de Oliveira, Sales Director Latin America Jon Whitmore, Sales Director United States Ezio Del Bello, Sales Canada Audwongsaree Suramon, Sales SEA, Oceania Chris Wang, Sales China Gerlinde Taurer, Marketing Total Number of Employees: 1900 Annual Production Capacity for Insulators: 48,000 tons Quality Certification: ISO 9001 (all plants), ISO 14001 (3 plants) Total Annual Sales 2011: Approx. EUR 150 million Range of Products Offered: Electrical Insulators

INSULATORS (Porcelain)

Sediver - Seves Group Commercial and Marketing Headquarters: 79, avenue François Arago, F-92017 Nanterre Cedex, FRANCE Telephone: (33) 146 14 15 16 Telefax: (33) 146 14 15 32 E-Mail: info@sediver.com Location of Manufacturing Plants: Seves: Area industriale F2 I-83051 Nusco, ITALY Electrovidro: Av Lùcio Thomé Feteira 312, CEP 24.415-000 São Gonçalo, (RJ) - BRAZIL Sediver Shanghai: 338 Minle Road, Spark Zone, Pudong District, 201419 Shanghai - CHINA Sediver Tianjin: Chenxing Road 10# & 12# Zhongbei Industrial Park, Xiqing District, 300112 Tianjin - CHINA Sediver Zigong: 162 Hutou Street, Gongjing District, 643020 Zigong City, Sichuan - CHINA

www.sediver.com Key Contact Personnel: info@sediver.com René Tabouret, Deputy G.M. Sediver Business Unit Hanane Jais-Nielsen, Head of Project Dept.

Ezio Del Bello, Sales - North America Jean-Christophe Keuller, Sales - Latin America Charles Chen, Sales - China Catherine Lecossois, Head of Marketing Dept.

Jean-Marie George, Innovation & Technical Eng. R&D@sediver.com Total Number of Employees: >1100 (SBU) Quality Certification: ISO 9001, ISO 14001 Total Annual Sales: More than USD 150 million Percent of Sales in Export Markets: 90% Range of Products Offered: Electrical Insulators (toughened glass, silicone coated toughened glass, composite), Arresters

INSULATORS (Toughened Glass) Suspension Type Insulators: For AC & DC applications up to 1000 kV; mechanical strength up to 760 kN Pin-Type Insulators: For MV applications Railway Insulators: For 1.5 kV to 3 kV DC and 15 kV to 50 kV AC Annual Production Capacity: 60,000 tonnes of glass

INSULATORS (Silicone Coated Toughened Glass)

Station Post Insulators: Up to 1200 kV AC and DC, 2850 mm max. height/ piece, 530 mm max. shed diameter Hollow Insulators: Up to 1100 kV, 2900 mm max. height/piece, no limits in height for epoxy jointed insulators, 800 mm max. shed diameter Long Rod Insulators: Up to 550 kN tensile ld., 2100 mm max. height, 5800 mm max. CD, 125 mm max. core diameter, 75 mm max. shed overhang Railway Insulators, Suspension Insulators, Line Post Insulators, Pin Type Insulators, Pin Post Insulators, Spool & Guy Strain, Electrofilter Insulators

Suspension Type Insulators: For AC & DC applications

INSULATORS (Composite)

INSULATORS (Hybrid)

Either in EPDM or silicone rubber, according to customer specification Suspension Type Insulators: For AC & DC applications; up to 765 kV; mechanical strength up to 600 kN Line-Post Insulators: Line post, braced line post, pivoting horizontal vee up to 500 kV Pin-Type Insulators: For MV applications Railway Insulators: For 1.5 kV to 3 kV DC and 15 kV to 50 kV AC

Station Post Insulators: Up to 1200 kV AC and 800 kV DC, high strength porcelain core and HTV silicone rubber housing

ARRESTERS

SALES REPRESENTATION

Zn0 65 kA & 100 kA composite lightning surge arresters with or without gap for voltage up to 500 kV

WORLDWIDE: PPC Insulators LATIN AMERICA: Santana NORTH AMERICA: Seves USA SEA: PPC Asian Insulators CHINA: Shanghai Trading

Tel.: (43) 1 982 5850-1541 Tel.: (55) 19 3893-9287 Tel.: (1) 419 447-3460 Tel.: (66) 2919-9950 Tel.: (86) 21 6441-5228

Fax.: (43) 1 982 5850-1540 Fax.: (55) 19 3893-2122 Fax.: (1) 419 447-3481/3483 Fax.: (55) 2919-9040 Fax.: (86) 21 6441-5226

REPRESENTATION IN FOREIGN MARKETS WORLDWIDE: LATIN AMERICA: NORTH AMERICA: CHINA:

Tel.: (33) 146 14 15 16 Tel.: (55) 21 2624 9545 Tel.: (1) 514 7393 385 Tel.: (86) 21 5750 5000

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Fax: (33) 146 14 15 32 Fax: (55) 21 2624 9507 Fax: (1) 514 7393 669 Fax: (86) 21 5750 5111

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SCEPT®

SGD La Granja Head Office & Manufacturing: Paseo del Pocillo s/n, E-40100 San Ildefonso, SPAIN Telephone: (34) 921 41 75 00 Telefax: (34) 921 41 75 55 Commercial Office: Paseo de la Castellana 77, E-28046 Madrid, SPAIN Telephone: (34) 91 397 25 66 Telefax: (34) 91 397 22 26 E-mail: lagranja@sgdgroup.com

www.sgdlagranja.com Key Contact Personnel: Mario López, Operations Director mario.lsanchez@sgdgroup.com Joaquín Benavides, Commercial Dir. joaquin.benavides@sgdgroup.com Javier García, Technical and Production Director javier.ghernandez@sgdgroup.com Pedro Bóveda, Insulators Development Manager pedro.boveda@sgdgroup.com Fernando Jaraba, Export Manager fernado.jaraba@sgdgroup.com Elías Py, Export Sales Engineer elias.py@sgdgroup.com Enrique Núñez, Domestic Market Sales Engineer enriques.ncantero@sgdgroup.com Year Founded: 1932 Total Number of Employees: 115 Quality Certification: ISO 9001 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 75% Major Export Markets Served (2012): Western and Eastern Europe, Northern Africa, Latin America, Middle East Range of Products Offered: Insulators (Toughened Glass)

INSULATORS (Toughened Glass) Suspension Disc-Type Insulators: 11 kV to 765 kV, 40 kN to 400 kN Pin-Type Insulators: Up to 36 kV Railway Insulators: From 3 kV to 25 kV (Conventional trains and high speed trains) Total Number of Employees in Insulator Production: 100 Annual Production Capacity for Insulators: 12,000 tonnes

SALES REPRESENTATION IN FOREIGN MARKETS Sales Office: Please contact Head Office Please see ad on page 13

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Shaanxi Collaboration Eletric Power Technology Co., Ltd. Head Office: Room No. 2502, No. 2 Office Building, Gaoxinfengshang, No. 7, Gaoxinyilu Road, Xi’an 710075 CHINA Telephone: (86) 29-8919 4070 Telefax: (86) 29-8919 4070 E-Mail: Insulator_fitting@yahoo.com.cn / sales@insulatorcasting.com Key Contact Personnel: Chen Heng, General Manager insulator_fitting@yahoo.com.cn Cao Jian Gang, Director of Logistic Dept. insulator_fitting@yahoo.com.cn Ding Yi Zhi, Production Manager for Hardware info@insulatorcasting.com Zhang Lei Production Mgr. for Insulator Cap info@insulatorcasting.com Zhang Guang Zong, QC Manager quality@insulatorcasting.com Year Founded: 2002 Total Number of Employees: 260 Total Number of Factory Workers: 230 Quality Certification: ISO 9001 Total Annual Sales: USD 3 to 5 million Percent of Sales in Export Markets: 95% Major Export Markets Served (2012): Russia, Ukraine, Spain, Poland, Egypt, India Range of Products Offered: Metal fittings for insulator and line hardware

METAL FITTINGS FOR INSULATORS AND LINE HARDWARE Metal Fittings: For porcelain, glass and polymeric insulator. Including 40 kN to 400 kN insulator cap (both socket and clevis type), flange, base, ball pin, ball eye and eye bolt etc.

Line Hardware: Including clevis and socket fittings, shackles and chain links ect.

Produced by Casting & Forging: Rough or machine finished, hot dip galvanizing treatment according to EN, IEC, DIN, BS, ASTM, and JIS standards, etc.

2013 Buyer’s Guide & directory

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Shaanxi Taporel Electrical Insulation Technology

Head Office & Manufacturing: No.8 Jingwei 10th Road, Jinghe Industrial Zone, Xi’an 710204, CHINA Telephone: (86) 29-8603 0283 Telefax: (86) 29-8603 0621 E-Mail: taporel@126.com, info@taporel.com Home Page on the Internet: www.taporel.com

Shanghai Himalayal Co.,Ltd Head Office & Manufacturing: 808, 1088A, New Jinqiao Road, Shanghai, 201206, CHINA Telephone: (86) 21 6101 6210 Telefax: (86) 21 6101 6213 E-Mail: info@himalayal.com.cn

www.himalayal.com.cn Key Contact Personnel: Sam Fang, GM Overseas Department sam@himalayal.com.cn Administration / General Information info@himalayal.com.cn Year Founded: 1984 Total Number of Employees: 230 Total Number of Factory Workers: 200 Total Annual Sales: USD 20 to 50 million Percent of Sales in Export Markets: 20% Major Export Markets Served (2012): USA, Canada, Spain, Russia, India, Turkey Range of Products Offered: High Voltage Testing Equipment

HIGH VOLTAGE TESTING EQUIPMENT AC test system - Up to 2250 kV (Modules & Tank) Resonant Test System - Voltage up to 2500 kV, Current up to 100 A Impulse Voltage Generator - Up to 7200 kV AC-PD Test System HV DC Generator - Up to 2000 kV Tan Delta Measuring System Partial Discharge Test System Gas Insulated AC Test System - Up to 1250 kV Gas Insulated Resonant Test System - Up to 1250 kV Coupling Capacitor - Up to 2500 kV Impulse Voltage Divider - Up to 7200 kV Gas Insulated Standard Capacitor - Up to 1600 kV Water Termination - Up to 800 kV

Key Contact Personnel: Wu Yamin, General Manager info@taporel.com Wang Rong, Sales Manager taporel@126.com Year Founded: 1996 Total Number of Employees: 156 Quality Certification: ISO 9001:2000, KEMA test report Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 50% Major Export Markets Served (2012): Germany, USA, UAE, Iran, Brazil, Italy, Lativa, Bulgaria, Switzerland, South Africa, Morocco, Colombia, Japan, Malaysia.

Range of Products Offered: Electrical Insulation Materials for Insulators, Bushings, Transformers and other Insulation Applications MATERIALS FOR ELECTRICAL INSULATORS: E glass rod & ECR rod (Diameter from 5 mm to 130 mm) Epoxy wouding tube (Diameter from 14 mm to 1000 mm) Cross arm, dogbone & corner piece Custom profile shapes Total Number of Factory Workers: 110 Please see ad on page 25

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Shanxi Century Metal Industries Inc.

Sichuan YiBin Global Group Co., Ltd.

Head Office: C3 Dayuan Taiyu Road, Taiyuan, Shanxi 030006 CHINA Telephone: (86) 351-828 1391 Telefax: (86) 351-833 2806 Address of Manufacturing Plant: Xindai Taigu County, Shanxi 030800 CHINA Telephone: (86) 354-632 0358 Telefax: (86) 354-6320358 E-Mail: centurymetal@126.com

Head Office & Manufacturing: #99, South First Road, Economic Zone of Longquan Yi, Chengdu, Sichuan 610100 CHINA Telephone: (86) 28-8464 5476, (86) 28-8464 5460 Telefax: (86) 28-8464 5411 E-Mail: sandydi523@hotmail.com, frances.wen@yahoo.com

www.line-hardware.com Key Contact Personnel: Chang Zhili, Managing Director centurymetal@126.com Cao Shangjiang, Assistant Manager cmicao@126.com Feng Gang, Financial Manager cmifeng@126.com Year Founded: 2004 Total Number of Employees: 140 Number of Employees in Production: 128 Quality Certification: ISO 9001 Percent of Sales in Export Markets: 90% Total Annual Sales: USD 3 to 5 million Major Export Markets Served (2012): Australia, Korea, New Zealand, Qatar, Romania, USA Range of Products Offered: Metal End Fittings

FITTINGS Line Hardware, Composite Insulator End Fittings, Overhead Line Fittings, Pole Products, and Investment Steel Castings Number of Employees in Production of End Fittings: 128 Please see ad on page 57

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www.sygg-insulator.com Key Contact Personnel: Sandy Di (Di Hongqiang), Sales Manager sandydi523@hotmail.com Frances Wen (Wen Yan), Sales Manager frances.wen@yahoo.com Year Founded: 2007 Total Number of Employees: 7000 Total Number of Factory Workers: 5000 Quality Certification: ISO 9001:2008, GB/T 19001:2008 Total Annual Sales: More than USD 50 million Major Export Markets Served (2012): India, United Kingdom, Brazil, Spain, Serbia, Pakistan Range of Product Offered: Glass Insulators

INSULATORS (Glass) Disc-Type Insulators: Voltage: AC 110 - 765 kV; DC ±800 kV Standards: IEC, ANS, BS, IS Maximum Dimensions: 420 mm Mechanical Strength: 70 kN - 550 kN Total number of employees in production of insulators: 700 Annual production capacity for insulators: 9 million pieces Please see ad on page 71

2013 Buyer’s Guide & directory

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Suzhou Porcelain Insulator Works Co., Ltd.

Head Office & Manufacturing: 20# Chunhui Road, Weiting District, Suzhou Industrial Park, Suzhou 215122, CHINA Telephone: (86) 512-65306046 Telefax: (86) 512-65204704 E-Mail: spiwcn@pub.sz.jsinfo.net Home Page on the Internet: www.spiwcn.com

Siemens AG Head Office & Manufacturing: Siemens AG, E T HP AR, Nonnendammallee 104, D-13629 Berlin, GERMANY Telephone: (49) 30-386 33 222 Telefax: (49) 30-386 26 721 E-mail: arrester.energy@siemens.com, insulators.energy@siemens.com

www.siemens.com/energy/arrester www.siemens.com/energy/insulators Key Contact Personnel: Herbert Klausner, CEO herbert.klausner@siemens.com Markus Rick, CFO markus.rick@siemens.com Lars Klingbeil, Head of Marketing & Product Management lars.klingbeil@siemens.com Reinhard Göhler, Head of R&D reinhard.goehler@siemens.com Stephan Dittmann, Head of Production & Logistics stephan.dittmann@siemens.com Werner Lesse, Head of Sales werner.lesse@siemens.com Year Founded: 1930 Quality Certification: ISO 9001/DATech Total Number of Employees: 180 Major Export Markets Served (2012): USA, Australia, Brazil, Germany, China, Canada, Mexico, Russia, Spain Total Annual Sales: Over USD 100 million Percent of Sales in Export Markets: 90% Range of Products Offered: Arresters and insulators

Key Contact Personnel: Honggen Wei, General Manager spiwcn@pub.sz.jsinfo.net Zhonghua Jin, Export Manager zhonghua_jin@spiwcn.com Xiaoli Song, Export Sales xiaoli_song@spiwcn.com Year Founded: 1959 Total Number of Employees: 1395 Total Number of Factory Workers: 1188 Total Annual Sales: USD 75 Million Percent of Sales in Export Markets: 45% Major Export Markets Served (2012): Asia, Australia, Brazil, Canada, Europe, Mexico, South Africa, United States Range of Products Offered: Insulators (Porcelain) INSULATORS (Porcelain): Suspension Disc-Type Insulators: 40 kN to 530 kN according to standard GB,IEC, ANSI, AS, BS etc.

Line-Post Insulators: 10 kV to 145 kV according to standard IEC, ANSI, AS, BS, GB etc.

Railway Insulators: 4 kN to 16 kN according to standard GB, BS JIS, IEC. Station Post Insulators: 35 kV to 1000 kV according to standard GB, IEC, ANSI, AS, BS etc.

Insulators for Bushings: 110 kV to 500 kV according to standard GB, IEC etc.

Switch/Bus Insulators: 35 kV to 1000 kV according to standard GB, IEC etc.

Other Types of Insulators: Subway insulators Materials or Components for Insulators: Porcelain Total Number of Employees in Insulator Production: 1395 Annual Production Capacity for Insulators: 46,000 metric tonnes

ARRESTERS Medium voltage polymer housed arresters - type 3EK up to 72.5 kV High voltage porcelain housed arresters - type 3EP up to 800 kV High voltage polymer housed arresters - type 3EL up to 550 kV and 3EQ up to 1200 kV Metal-enclosed GIS arresters - type 3ES up to 800 kV Arresters for DC traction systems, porcelain housed - type 3EC3 Arresters for AC and DC traction systems, polymer housed - type 3EB1, 3EB2 and 3EB4 Voltage limiters for indoor applications - type 3EF up to 12 kV Separable (plugin-type) arresters with different cable plug systems for switchgear and traction systems Arresters for SC and SVC applications Arresters for HVDC applications up to 500 kV DC Monitoring devices and systems

Insulators, Arresters, Bushings & Cable Accessories

For information on how to participate please contact: info@inmr.com

INSULATORS Silicone Long Rod Insulators - Type 3FL For distribution and transmisson overhead lines up to 550 kV with specified mechanical load (SML) up to 210 kN available with Ball, Socket, Clevis, Tongue, Eye and Y-Clevis. Mechanical classes and end fitting design acc. to IEC 61466-1.

Please see ad on Inside Front Cover

Westin Bayshore Hotel & Conference Center Vancouver, Canada, September 8-11, 2013

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TE Connectivity - continued CABLE ACCESSORIES up to 245 kV Low Voltage accessories, MV joints, terminations and switchgear connection systems and HV accessories up to 245 kV, Nuclear qualified products

CONNECTORS & FITTINGS up to 1200 kV Low voltage, medium and high voltage substation and transmission line connectors up to 1200 kV

INSULATION ENHANCEMENT & WILD LIFE PROTECTION Wide range of easy-to-install high voltage insulating material for indoor and outdoor applications permitting clearance reduction and flashover protection against accidental bridging of busbars.

TE Connectivity Head Office: Tyco Electronics Raychem GmbH, TE Energy, Finsinger Feld 1, 85521 Ottobrunn (Munich), GERMANY Telephone: Germany (49) 89-6089-0 UK (44) 1793 572 399 Ireland (35) 361 470800 Switzerland (41) 566 188 700 China (86) 21 6106 7000 USA (1) 919 955 23811

SALES REPRESENTATION IN FOREIGN MARKETS Contact head office for representative details by country or visit the customer service section of web site using the following link: http://energy.te.com Please see ad on page 45

http://energy.te.com Key Contact Personnel: Robert Strobl, Market Director Power Transmission Global rstrobl@te.com David Jiang, Market Director Transmission Asia david.jianghui@te.com Miguel Contreras, Market Director Transmission Americas mcontreras@te.com Craig Sutton, HV Surge Arrester & Insulator csutton@te.com Laurent Royer, HV Connector Systems lroyer@te.com Alexander Eigner, HV Cable Accessories aeigner@te.com Hagen Dittrich, Axicom Hollow Core Insulators hdittrich@te.com Frank Drumm, Director MV Cable Accessories fdrumm@te.com Greg Quail, Insulators Asia & Anzpac gquail@te.com Brian McGowan, MV Surge Arrester & Insulators surgearresters@te.com Quality Certification: ISO 9001, 14001, OHSAS 18000 Major Export Markets Served (2012): Worldwide Range of Products Offered: LV/MV/HV Insulators, Surge Arresters, Cable Accessories, Asset Protection Insulation and Connectors Tyco Brands: Axicom, Bowthorpe EMP, Raychem, SIMEL

INSULATORS up to 1200 kV Long Rod Insulators: Up to 500 kV Line Post Insulators: Up to 500 kV Dead-End Insulators: Up to 72 kV Switch / Bus Insulators: Up to 72 kV Railway Insulators: Strut and tension insulators, DC 1.5 kV up to AC 25 kV Station Post Insulators: Up to 400 kV Composite Hollow core insulators: Up to 1200 kV Insulators for EHV Bushings: Up to 800 kV Other Types of Insulators: Hybrid insulators, (Porcelain core + polymeric housing) for all applications including high pollution environments

Zhejiang Titan Co., Ltd.

Head Office & Manufacturing: No. 6 Kaixuanbei Road, Kecheng, Quzhou, Zhejiang 324000 CHINA Telephone: (86) 570-3851400 Telefax: (86) 570-3851023 E-Mail: titan@zjtitan.com Home Page on the Internet: www.zjtitan.com Key Contact Personnel: Joanna Wu, General Manager Zongwen Zhou, Deputy GM

joanna@haoshenggroup.com info@zjtitan.com

(R&D, Quality, Production)

SURGE ARRESTERS up to 800 kV

Ye Jia, International Sales Manager ye.jia@zjtitan.com Year Founded: 2009 Number of Employees in Production: 145 Quality Certification: GB/T 28001-2001, ISO 14001:2004, ISO 9001:2008 Major Export Markets Served (2012): Europe, United States, India, Middle East, Korea Range of Products Offered: Composite Hollow Insulators, Composite Post Insulators

LV Industrial (TVSS) & Utility: Indoor / Outdoor AC 230/400 V MV Indoor/Outdoor: 5 kA, 10 kA, class 1 and 2 up to 42 kV HV Polymeric & Porcelain: Class 2-5, up to 800 kV Surge Counters: SC12, SC13, SC14 & SC15 Other Applications: Cable sheath, DC rail, Transmission Line Arresters Continues at top of next column

INSULATORS; Composite Insulators offered according to customer reqirements: AC application: 35 kV to 1100 kV DC application: ±400 kV to ±800 kV Material or Components for Insulators: FRP tube, metal flange, silicone rubber housing, (HTV or LSR, according to customer requirements)

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Tridelta Überspannungsableiter GmbH Head Office & Manufacturing: Marie-Curie-Str. 3, D-07629 Hermsdorf, GERMANY Telephone: (49) 36601 9328-300 Telefax: (49) 36601 9328-301 E-Mail: arrester@tridelta.de

www.tridelta.de Key Contact Personnel: Norbert Passarge, Managing Director Year Founded: 1961 (arrester production)

arrester@tridelta.de

Tridelta Parafoudres S.A. Head Office & Manufacturing: Boulevard de l'Adour, F-65202 Bagneres de Bigorre, FRANCE Telephone: (33) 5 62958450 Telefax: (33) 5 62958465 E-Mail: parafoudres@tridelta.fr

www.tridelta.fr Key Contact Personnel: Anne Winter, Managing Director Year Founded: 1945 (arrester production)

anne.winter@tridelta.fr

Total Number of Employees: 100 Quality Certification: ISO 9001 Percent of Sales in Export Markets: 90% Total Annual Sales: USD 20 to 50 million Range of Products Offered: Arresters

ARRESTERS Surge arresters in porcelain and silicone housing for: • Medium voltage indoor and outdoor • High voltage up to 765 kV • Transmission line arresters up to 550 kV (TLA) • DC traction systems • Surge counters • Portable leakage current monitoring devices Please see ad on page 41

Uniflex-Hydraulik GmbH Head Office & Manufacturing: Robert-Bosch Str. 50-52, 61184 Karben (near Frankfurt), GERMANY Telephone: (49) 6039 91 71 0 Telefax: (49) 6039 91 71 11 E-Mail: info@uniflex.de

www.uniflex.de Key Contact Personnel: Patrick Sticker, President sticker@uniflex.cc Year Founded: 1972 Total Number of Employees: 50 Total Factory Workers: 30 production / 5 service Percent of Sales in Export Markets: 70% Major Export Markets Served (2012): Sinapore, China, Brazil, USA Range of Products Offered: UNIFLEX offers a comprehensive program of machines designed for producing hose assemblies and for the compression of metal parts. Furthermore machines equipped with PFC (Pressure Force Control) can be used for producing insulators.

PRODUCTION MACHINERY: Radial Crimping Machines for Service and Production, Hose Cutting and Brushing Machines, Automatic Cutting Machines, Hose Skiving Machines, Nippel Inserter, Marking Tools, Cleaning Machines, Test Benches

Sales Representation in Foreign Markets: UNITED STATES: UNIFLEX of America LLC: 1088 National Parkway, Schaumburg, IL 60448 Gary Kreuz : Tel.: (1) 847 519-1100, (1) 847 373-4332, (1) 773 852-9554 Fax.: (1) 847 519-1104, E-mail: GKreuz@uniflexusa.com ASIA: UNIFLEX-Hydraulik Asia Pacfic Pte., Unity Center, No 51 Bukit Batok Crescent #07-25, 658077 SINGAPORE Tel.: (65) 689 66 795, Fax.: (65) 689 66 428, E-mail: talim@uniflex.de UNIFLEX-Hydraulik Asia Pacfic Pte., Ltd. (Rep. Office) Kompl. Villa Melati Mas, Jl. Seruni III, Blok SR 10 No. 16, Serpong, Tangerang 15323, INDONESIA Tel.: (62) 2193675888, Fax.: (62) 215374143 UNIFLEX-Hydraulik Trading (Shanghai) Co.Ltd., Room 1902, Fang Zheng Building, No. 1122 Xin Jin Qiao Road, Pudong New District, Shanghai, 210206, CHINA Tel.: (86) 21 50327022, Fax.: (86) 21 50327021

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FITTINGS

Ugur Turkyurt A.S. Head Office & Manufacturing: Yukar覺 Dudullu Org. San. B繹l. 2. Cad No:12 Umraniye, Istanbul, 34775, TURKEY Telephone: (90) 216 364 10 95/96 Telefax: (90) 216 365 61 76 E-mail: ugurturkyurt@ugurturkyurt.com

www.ugurturkyurt.com www.utsinsulator.com Key Contact Personnel: Mehmet Turkyurt, General Manager mturkyurt@ugurturkyurt.com Ayse Tangulu Finance Manager aturkyurt@ugurturkyurt.com Aytug Hacioglu Marketing & Sales ahacioglu@ugurtukyurt.com Sat覺 Tekiner Marketing & Sales stekiner@ugurturkyurt.com Year Founded: 1964 Total Number of Employees: 96 Total Number of Factory Workers: 75 Quality Certification: ISO 9001:2008, ISO 14001, TSEK Total Annual Sales: USD 5 to 10 million Major Export Markets Served (2012): Switzerland, Germany, Nigeria, North Iraq, Azerbaijan, Mozambique Range of Products Offered: Arresters Major Products Offered: Electrical Insulators (Polymeric)

INSULATORS (Polymeric) Suspension Disc-Type Insulators: 11 kV to 500 kV at ratings of 40 kN to 210 kN and special types acoording to customer drawings; SML to ANSI and IEC Standards

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Overhead Transmission Line Hardware Fittings: 36 kV to 500 kV at ratings of 40 kN to 210 kN and special types acoording to customer drawings; SML to ANSI and IEC Standards Overhead Substation Hardware Fittings: 36 kV to 420 kV at ratings of 40 kN to 210 kN and special types acoording to customer drawings; SML to ANSI and IEC Standards Overhead Distribution Line Hardware Fittings: 11 kV to 36 kV at ratings of 40 kN to 210 kN and special types acoording to customer drawings; SML to ANSI and IEC Standards OPGW Hardware Wire Fittings: OPGW fittings for all type of OPGW Conductor Spacer Dampers: 2 and 3 Bundle spacer dampers are applicable for all type of conductors (ACSR, AAC, ext), IEC Standards Stockbridge Dampes: 4 R Stockbridge Vibration dampers are applicable for all type of conductors (ACSR, AAC, ext), IEC Standards Aircraft Warning Sphares: Aircraft warning sphares has been from Al Alloy or Fiberglass and has adiameter of 600 mm. Painting has been done according to RAL specifications Total Number of Employees in Insulator Production: 30 Annual Production Capacity for Insulators: 750 ~ 1000 tonnes

REPRESENTATION IN FOREIGN MARKETS KINGDOM OF SAUDI ARABIA AGENT: Mirghani Ibrahim El Tai Engineering & Technology Est.: e.t.t.e@hotmail.com 2nd Floor, 204, Al-Dewan Commercial Center, King Abdullah Bin Abdulaziz Rd. (Dhahrar RD), 30990 Al Khobar 31952 SAUDI ARABIA Tel: (966) 3 898 0325 Cel: (966) 551105023 Fax: (966) 3 8982582 SYRIA AGENT: Ghiath Al Kamha Est. Salim Al-Kamha & Sons Tel: (963) 444 69 06 kamha100@yahoo.com JORDAN AGENT: Mohammad Aljibouri, Sawa Telecommunication Amman-Gardens St-Al.waha Cir.R.Assaf Bui No: 503-506 JORDAN Tel: (962) 6 554 55 50 Fax: (962) 6 554 03 85 mohamedm@orange.jo IRAQ REPRESENTATIVE: Izzet Unsal Tel: (964) 7711873072 izzetunsal@hotmail.com - BAGHDAD OFFICE: Eng. Zuhair Jassim Othman Tel: (964)7700267034, (964) 7901479265 Dist. 617-Str. 7. - Bld. 9 Mansour, Bagdat IRAQ - ZAKHO OFFICE: Ahmed Mohammed Khalid Tel: (964) 7507625555 Fax: (964) 7504594686 Kornish Str. No:12, Zakho IRAQ Please see ad on this page

12-11-20 4:05 PM

Uvirco Technologies (Pty) Ltd. Head Office: Unit B003, The Woods, 41 De Havilland Cresent, Persequor Technopark, Pretoria, SOUTH AFRICA Postal Address: P.O. Box 39, Persequor Technopark, Pretoria 0020, SOUTH AFRICA Telephone: (27) 12 349 3760 E-Mail: info@uvirco.com

www.uvirco.com Key Contact Personnel: Dirk Lindeque, Chief Executive Officer Riaan Rossouw, Marketing Manager Major Export Markets Served (2012): Worldwide

Vogel moulds and machines AG Head Office & Manufacturing: Im Ebermättli 8a, CH-4464 Maisprach SWITZERLAND Telephone: (41) 61 845 9999 Telefax: (41) 61 845 9990 E-Mail: sales@vogel-ag.net

www.vogel-ag.net dirk@uvirco.com riaan@uvirco.com

PRODUCTS Corona imaging systems for the detection of external electrical discharges.

External electrical discharge generate Corona, a major signature of which is in the UV band. The CoroCAM Corona cameras allow the user to see where the Corona discharge is taking place, making it possible to identify the cause and decide on a remedy for the situation.

There are a number of CoroCAM handheld units available to meet user requirements: CoroCAM l: Night-time and indoor UV detection with UV filters (300-400 nm) and video image output for recording.

CoroCAM lll: Night -time UV detection with improved optics and selectable filters for UV image processing and enhancement.

CoroCAM 504: A lightweight compact reliable solar-blind daylight UV detection system with a viewfinder. A unique feature is the ability to remove the solar-blind filter for doubling the sensitivity during night or indoor inspections.

CoroCAM 6D: A lower cost redesign of the CoroCAM504 with on-board video storage, LCD display and similar sensitivity.

MultiCAM: The multi-spectral camera displays UV over visible or UV over infrared images, providing the user with comprehensive information on hot spot s, external electrical discharges (Corona) and visible damage on High Voltage equipment. The one-stop service inspection system.

Uvirco also develops user specific imaging products in the field of High Voltage fault detection and visualization.

Key Contact Personnel: Gerhard K. Mais, Managing Director sales@vogel-ag.net Norbert Maroldt, Managing Director sales@vogel-ag.net Hans Peter Lüdin, Technical Director sales@vogel-ag.net Total Number of Employees: 15 Percent of Sales in Export Markets: 90% Major Export Markets Served (2012): Europe, USA, Middle East Range of Products Offered: Production machinery

PRODUCTION MACHINERY Equipment for Silicone processing: Clamping Machines, Dosing Equipment for LSR Silicone, Moulds, Advanced Vulcanization Technology (AVT), Integrated Manufacturing System (IMS) Equipment for Clamping Machines and Moulds

SALES REPRESENTATION IN FOREIGN MARKETS CHINA: Vogel Xiamen Representative Office 7th, Yangtai Road, Xinyang Industrial Area, Haicang District, Xiamen City 361026 CHINA Telephone: (86) 592 651-3188 / Telefax: (86) 592 651-3688 E-Mail: sales@vogel-ag.net / Website: www.vogel-ag.net Please see ad on page 39

SALES REPRESENTATION IN FOREIGN MARKETS Visit website at: www.uvirco,com for distributor contact information Please see ad on page 69

Volani Metais Indústria e Comércio Ltda.

Main Office & Manufacturing: Av. Edmundo Doubrawa, 355, Zona Industrial Norte, Joinville – SC 89219-502, BRAZIL Telephone: (55) 47-3424-1050 Telefax: (55) 47-3424-6276 E-Mail: volani@volani.com.br Home Page on the Internet: www.volani.com.br Please see ad on page 102

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W.S. Industries (India) Ltd. Head Office: 108, Mount Poonamallee Road, Porur, Chennai-600 116, INDIA Telephone: (91) 44-665 00 893 Telefax: (91) 44-665 00 894 Locations of Manufacturing Plants: Unit - I : 108, Mount Poonamallee Road, Porur, Chennai 600 116, INDIA Unit - II: Plot No. 31, APSEZ, Duppituru Village, Atchutapuram Mandal, Visakhapatnam 531 011, INDIA E-Mail: exports@wsinsulators.com / sales@wsinsulators.com

www.wsinsulators.com Key Contact Personnel: Narayan Sethuramon, Managing Director & CEO diroffice@wsinsulators.com K.S. Ramiah, President (Marketing & Business Development) ksramiah@wsinsulators.com Thomas Johansson, Chief Operating Officer thomas.johansson@wsinsulators.com S. Suresh, Executive Vice President ssuresh@wsinsulators.com A. Natarajan, Asst. Vice President (Marketing) natarajan@wsinsulators.com K. Suresh, Asst. Vice President (Sales) ksuresh@wsinsulators.com Year Founded: 1964 Total Number of Employees: 1169 Quality Certification: ISO 9001:2000 Total Annual Sales: USD 40.2 million Percent of Sales in Export Markets: 11.1% Major Export Markets Served (2012): Sweden, Germany, USA, Spain, Brazil, Iran, Turkey, Saudi Arabia Range of Products Offered: Electrical Insulators (Porcelain) and associated hardware accessories

INSULATORS (Porcelain) Suspension Disc-Type Insulators: Up to 800 kV (45 kN - 320 kN) normal, antifog and aerodynamic as per IEC, BS, ANSI Station Post Insulators: Up to 800 kV as per IEC, BS, ANSI Hollow Porcelain Housings for: Transformer bushings 11 kV to 52 kV

Condenser bushings 72 kV to 420 kV Surge arresters 9 kV to 550 kV Instrument transformers 11 kV to 800 kV SF6 breaker porcelains 72 kV to 420 kV Porcelains for special applications (cable box, wall through, capacitor bushings etc.)

Line-Post Insulators: Up to 115 kV as per IEC, BS, ANSI Pin-Type Insulators: Up to 44 kV as per IEC, BS, ANSI Strain/ Guy Insulators: As per ANSI, BS Railway Insulators: As per IEC, BS Switch Insulators / Bus Insulators: As per IEC, BS, ANSI Spool Insulators: As per ANSI, BS Number of Employees in Insulator Production: 869 Annual Production Capacity for Insulators: 22,000 metric tonnes

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Wacker Chemie AG Head Office: Hanns-Seidel-Platz 4, D-81737 München, GERMANY Telephone: (49) 89 6279 0 Telefax: (49) 89 6279 1770 Location of Manufacturing Plants: Germany, United States, China, Japan, Brazil and others E-mail: claudia.berghammer@wacker.com

www.wacker.com Key Contact Personnel: Claudia Berghammer, Commercial Marketing Manager Tel.: (49) 89 6279 1741 claudia.berghammer@wacker.com Georg Simson, Application Engineering Manager Tel.: (49) 8677 8386463 georg.simson@wacker.com Jens Lambrecht, Application Engineering Manager Tel.: (49) 8677 834284 jens.lambrecht@wacker.com Year Founded: 1914 Total Number of Employees: 17200 Quality Certification: ISO 9001 Range of Products Offered: Silicones (Wacker Silicones), binders and polymer additives (Wacker Polymers), hyperpure polysilicon (Wacker Polysilicon), tailored biotech and catalog products in the fine chemical sector (Wacker Biosolutions), and hyperpure silicone wafers for the semiconductor industry (Siltronic).

MATERIALS FOR INSULATORS & INSULATION POWERSIL® and ELASTOSIL® branded silicone materials for the high and middle voltage technology: - Silicone elastomers and gels for the fabrication of composite insulators, bushings, arresters, instrument transformers and cable accessories such as joints, terminations and connectors.

- High-performance silicone coatings for ceramic and glass insualtors.

The POWERSIL® and ELASTOSIL® ranges are consisting of: HCR, LSR including POWERSIL® XLR® (extra liquid rubber), RTV-2, RTV-1, gels and fluids.

SALES REPRESENTATION IN FOREIGN MARKETS AUSTRALIA: Martin Bruetsch Tel.: (61) 3 9541 8904 BRAZIL: Paul Schmitz Tel.: (55) 11 4789 8315 CHINA: Winter Li Tel.: (86) 21 6165 5651 INDIA: O’Neil Remedios Tel.: (91) 22 6710 6742 JAPAN: Youichi Motomura Tel.: (81) 3 5283-8850 KOREA: Woo-Jae Lee Tel.: (82) 2 6710 1206 SINGAPORE: Martin Stoemmer Tel.: (65) 63 0908 68 USA: Mark Dibling Tel.: (1) 517 264 8334 Toby Vick Tel.: (1) 517 264 8290 Please see ad on page 29

martin.bruetsch@wacker.com paul.schmitz@wacker.com winter.li@wacker.com oneil.remedios@wacker.com youichi.motoruma@wacker.com woo-jae.lee@wacker.com martin.stoemmer@wacker.com mark.dibling@wacker.com toby.vick@wacker.com

2013 Buyer’s Guide & directory

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Wenzhou Yikun Electric Co. Ltd. Head Office & Manufacturing: Hexiang Road, Aojiang, Pingyang, Wenzhou, Zhejiang 325401, CHINA Telephone: (86) 577-6365 4852 / 6365 4853 Telefax: (86) 577-6367 6863 E-Mail: yikunelectric@gmail.com

www.chinese-arrester.com www.yikun.cn Key Contact Personnel: Yankun Yu, President Dick Yu, General Manager dick@yikun.cn Tuqiao Wang, Production Manager Year Founded: 1994 Total Number of Employees: 392 Total Number of Factory Workers: 338 Quality Certification: ISO 9001:2008 Total Annual Sales: USD 20 million Percent of Sales in Export Markets: 60% Major Export Markets Served (2012): Worldwide Range of Products Offered: Composite Insulators, LV/MV/HV surge arresters (polymer and porcelain), Drop-out fuse cutout (polymer and porcelain), Disconnect switch (polymer and porcelain), Vacuum circuit breaker, fuse links, ZnO Block, Hydraulic Spring Operating Mechanism for High Voltage Circuit Breaker

INSULATORS (Polymeric) Long-Rod Insulators: Up to 220 kV Dead-End Insulators: Up to 220 kV Insulator For Switch: 38 kV Railway Insulators: 27.5 kV Station Post Insulators: Up to 220 kV

XIAMETER® from Dow Corning Head Office: 2200 Salzburg Road, Midland, MI 48640, UNITED STATES E-Mail: order.info@XIAMETER.com

www.XIAMETER.com Year Founded: 2002

SILICONE PRODUCTS Disruptions can occur when energy production and delivery systems are exposed to wind and thunderstorms, extreme temperatures, or pollution.

Silicone-Based Materials: Help by protecting high-voltage electrical equipment from the elements and preempting disruption of power supply.

Silicone Rubbers: Provide resiliency to environmental contaminants, physical stresses, and vandalism, and are the material of choice for high-voltage insulators. Cable end terminations, cold-shrink accessories, adapters and connectors also can be made out of silicone rubber.

Silicone High-Voltage Insulator Coatings: Offer proven arcing and flashover protection, as well as resistance to environmental stresses, pollution, and extreme temperatures. They can reduce maintenance requirements on insulators and associated equipment by reducing or, in many cases, eliminating the need for repetitive water washing or repetitive greasing.

The XIAMETER brand from Dow Corning offers thousands of standard silicone products online at market-based prices.

Find out more at www.XIAMETER.com.

SURGE ARRESTERS (Polymeric & Porcelain) Distribution Surge Arrester: 2.5 kA, 5 kA, 10 kA up to 36 kV Substation Surge Arrester: Up to 220 kV Line Surge Arrester: Up to 220 kV Dropout Fuse Cutouts (Polymer & Porcelain): Up to 38 kV

DISCONNECT SWITCH MV Disconnect Switch: Polymer and porcelain, up to 36 kV Railway Disconnect Switch (Porcelain): Up to 27.5 kV HV Disconnect Switch (Porcelain): Up to 126 kV

VACUUM CIRCUIT BREAKER (VCB) Distribution VCB: 12 kV Railway VCB: 27.5 kV Hydraulic Spring Operating Mechanism for High Voltage Circuit Breaker: up to 550kV

ZINC OXIDE BLOCK / VARISTOR FOR ARRESTER Diameter: 32 mm to 115 mm Class: From class 1 to class 4 Please see ad on page 33

Read INMR on-line at www.inmr.com The Best Web Site in the Business 2013 Buyer’s Guide & directory

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Yangzhou Xinyuan Electric Co., Ltd. Jinky Xiong Sales Manager

Yangzhou Power Electric Co., Ltd. No.9 longchuan North Road, Jiangdu, Yangzhou City, Jiangsu province, China Tel : 86 514 86688088 Fax: 86 514 86688588 Website: www.powerhv.com

Mobile: 86 18717754668 Shanghai Office: Tel: 86 21 61812129*603 Fax: 86 21 61812129*608 Email: jinky@powerhv.com

Head Office: No.9 Longchuan North Road, Jiangdu, Yangzhou City, Jiangsu 225253, CHINA Manufacturing: Wujian Industrial Park, Yangzhou City, Jiangsu 225253 Professional Manufacturer of: AC Test Transformer CHINA up to 2250 kV AC Resonant System up to 2000 kV Impulse Voltage Test System up to 7200 kV 514-8668 8088 Telephone: (86) Telefax: (86) 514-8668 8588 DC Test System up to 2400 kV E-Mail: sales@powerhv.com High Voltage Accessories HV Shileding Room High Voltage Test Instrument

Yangzhou Xinyuan Electric Co., Ltd.

Local Brand in China

www.powerhv.com

ISO9001:2008

Key Contact Personnel: Johnny Chan, Marketing Executive johnny@powerhv.com Kenny Yu, Sales Manager kenny@powerhv.com Year Founded: 2004 Total Number of Employees: 201 Number of Employees in Production: 160 Quality Certification: ISO 9001:2000 Total Annual Sales: USD 10 to 20 million Percent of Sales in Export Markets: 30% Major Export Markets Served (2012): Canada, Russia, Germany, India, Australia, Malaysia Range of Products Offered: AC Test Transformer, Impulse Voltage Generator, Resonant Test System, HVDC Generator

INTRODUCTION Yangzhou Xinyuan Electric Co., Ltd. is a high tech company focuse on the research, development and sales of high voltage testing equipment.

Company has the ability to produce complete set of high voltage, highcapacity testing equipment. It has participated in national significant electric item for many times, and we have passed ISO 9001:2000 Quality Management System Certification.

HV TESTING EQUIPMENT AC Test Transformer: Up to 2250 kV AC Resonant System: Up to 2000 kV DC Voltage Test System: Up to 2000 kV Impulse Voltage and Current System: Up to 7200 kV Partial Discharge Test System On-site Test System: Resonant circuits with variable frequency Module Test System: For Research and Education Voltage and Current Measuring System: HV divider, measuring sphere gap, HC shunt, coupling capacitor, shielding ring etc.

Guangdong Yizumi Precision Machinery Co., Ltd. Yizumi Rubber Machinery Co.,Ltd. Head Office & Manufacturing: No.22, Keyuan 3 Road, Hi-Tech Area, Ronggui, Shunde, Foshan City, Guangdong, CHINA Telephone: (86) 757-2926 5320, 2926 5156 E-Mail: rim@yizumi-group.com / info@yizumi-group.com

www.yizumi-group.com.hk www.yizumi-group.com Key Contact Personnel: Nancy Liu, International Sales Manager nancy@yizumi-group.com Year Founded: 2002 Total Number of Employees: 1300 Total Number of Employees in Factory Production: 900 Manufacturing Plant Size: 80000 sqm Quality Certification: ISO 9001 Total Annual Sales: USD 140 million Percent of Sales in Export Markets: 20% Major Export Markets Served (2012): India, Iran, Hungary, Russia, Mexico, Brazil, Saudi Arabia, Colombia, Malaysia, Turkey, Ukraine, Philippines, Vietnam, Egypt, Italy Range of Products Offered: Composite Insulator/Surge Arrester Injection Molding Machine, Composite Hollow Core Insulator Molding Machine (HTV/LSR), Cable Accessories Molding Machine

PRODUCTION MACHINERY Composite Insulator/Surge Arrester Injection Molding Machine: YL-V360L, YL-AB500L, YL-AB550L, YL-AT1100L (HTV) Composite Hollow Core Insulator Molding Machine (HTV/LSR): YL-AT660L, YL-AT880L, YL-AT1800L, YL-H250, YL-H1000F (HTV/LSR) Cable Accessories Molding Machine: YL-H160, YL-H250, YL-V100, YL-V330, YL-V330L Please see ad on page 22-23

Inspiring Journey To preview the book and order your copy, please visit www.inmr.com/inspiringjourney/ or email us at: info@inmr.com

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VOLUME 20 NUMBER 4 • QUARTER FOUR - 2012

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INMR

Issue 98 • Quarter 4 - 2012 • Volume 20 - Number 4

Got Technical Questions?

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2013 BUYER’S GUIDE & DIRECTORY

2013 BUYER’S GUIDE & DIRECTORY

INSULATORS • ARRESTERS • BUSHINGS • CABLE TERMINATIONS • FITTINGS • TEST EQUIPMENT • INSULATION MATERIALS • PRODUCTION MACHINERY