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LIGHTNING AND SURGE PROTECTION FOR PV SYSTEMS

photovoltaic systems.

STRUVITE REMOVAL AND BIOSOLIDS ENHANCEMENT PROCESS

Systems are available for one-family houses up

AirPrex technology, by German group

DEHN + SOHNE has lightning protection components and surge protection devices for

to PV power plants. The modular systems allow for lightning and surge protection measures for all kinds of PV systems - starting with external lightning protection with an air-termination system, down-conductor system and earth-termination system, along with equipotential bonding and up to lightning and surge protection.

CNP, provides a struvite removal and biosolids enhancement process. It removes struvite (magnesium ammonium phosphate) from anaerobically digested sludge streams, thus eliminating potential pipe blockages and mechanical issues without increasing

Even when devices overload, the arrester control of the DEHNguard PV SCP ensures a

chemical use.

safe state of operation without a risk of fire in the system. The combined disconnection and

The technology creates phosphate

short-circuiting device is able to carry the short-circuit current until corrective maintenance of the PV system.

fertiliser as a by-product of the process, providing a sustainable

The Type 1 combined lightning current and surge arrester DEHNlimit PV 1000 protects the

source of this diminishing commod-

generator and inverter against surges in case of direct lightning strikes. Potential short-

ity. It also reduces the phosphorus

circuit currents up to 100 A at a photovoltaic voltage up to 1000 VDC will be interrupted

load returned to the plant by 90%.

within a few split seconds.

It is said to improve sludge dewa-

The DEHNcon-Ha module, in the field of an isolated air-termination system, is usable

tering performance, reduce polymer

wherever proximities have to be avoided. The HVI conductor light is used not only controls

consumption, create higher cake

proximities, but it is also individually adjustable to the architectural design by selecting the

solids and reduce a plant’s overall

corresponding colour of the paint coating.

operational expenditure.

DEHN + SOHNE GmbH + Co KG www.dehn.com.au

Hydroflux Pty Ltd www.hydrofluxindustrial.com.au

ROTARY SCREW VACUUM PUMPS The GHS VSD+ Series is a range of efficient, intelligent vacuum pumps with variable speed drive (VSD) from Atlas Copco. Based on the plug-and-play design principles of Atlas Copco compressors, the pumps have been designed to deliver peak performance at operating pressures commonly found in industrial applications. The GHS 350-900 VSD+ vacuum pump range is said to provide users with energy savings of around 50% compared to traditional rotary vane pumps, with its VSD and an innovative inlet control valve combining to reduce lifecycle costs. The product has a lower environmental impact due to ultrahigh oil retention at all operating pressures - from ultimate pressure to atmospheric pressure. It conforms to energy management and environmental commitments according to ISO 50001/14001. The series offers a low noise level compared to other vacuum pumps. Energy recovery leads to minimal hot air in the workplace, while its oil retention means that the quality of the exhausted air is optimal. It also avoids oil spills on the factory floor, which commonly occur with conventional oil-lubricated pumps. This leads to a cleaner working environment and faster cycle times. Due to its plug-and-play design, the series assures an easy and fast installation that saves time and space. The footprint is no larger than that of a standard pallet and everything required is delivered as a complete package. The vacuum-specific element is said to offer a longer lifetime than a screw compressor and vane pumps, as well as high efficiency. The inlet control valve provides modulating vacuum control in conjunction with the VSD drive to minimise energy consumption. Atlas Copco Compressors Australia www.atlascopco.com.au

44 Sustainability Matters - Jun/Jul 2015

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Sustainability Matters Jun/Jul 2015  

Sustainability Matters is a bi-monthly magazine showcasing the latest products, technology and sustainable solutions for industry, governmen...

Sustainability Matters Jun/Jul 2015  

Sustainability Matters is a bi-monthly magazine showcasing the latest products, technology and sustainable solutions for industry, governmen...