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XLPE INSULATED POWER CABLE


CONTENT INTRODUCTION_________________________________________________2 WHAT IS XLPE? _________________________________________________3 CHARACTERISTICS AND ADVANTAGES OF XLPE ____________________4 MANUFACTURING PROCESS OF XLPE CABLES _____________________5 STRUCTURAL DESIGN AND PERFORMANCE OF XLPE CABLES ________6 PROCESS OF XLPE CABLES______________________________________7 TESTING PROCEDURES OF XLPE CABLES__________________________8 CABLE STRUCTURAL DESCRIPTION AND CONSTRUCTION DATA______10 TECHNICAL DATA_ _____________________________________________44

1


INTRODUCTION Leader Cable Industry Berhad was incorporated in 1976 as a private company prior to its merger with Universal Cable (M) Berhad in 1990 to form the single largest wire and cable manufacturer in the region. As part of Leader Universal Holdings Berhad (LEADER), a public company listed under the Kuala Lumpur Stock Exchange Malaysia, Leader Cable shares the group’s extensive network for synergistic integration in areas of cable technology. Leader Cable, together with its subsidiary companies, cover a broad spectrum of products which includes telecommunication cables, data cables, XLPE and PVC power and cntrol cables, rubber insulated cables and electrical grade aluminium rods. Continued capital investment has enabled Leader Cable to extablish state-of-the-art facilities and utilize innovative improvements and refinements through critical selection of raw materials to produce better and more cost-effective products for its customers. With a strong emphasis on customer satisfaction, Leader Cable is constantly expanding their product range to enhance its position as a major supplier of power and telecommunication cables to local industries and increase its prominence abroad.

This catalogue serves as a guide to LCIB’s manufacturing processes and standards in the manufacturing of XLPE cables.


WHAT IS XLPE? XLPE is an abbreviated designation of “cross-linked polyethylene�. Polyethylene has a linear molecular structure as shown in A. Molecules of polyethlene not chemically bonded as shown in B are easily deformed at high temperature, while XLPE molecules bonded in a three dimensional network as shown in C and D, have strong resistance to deformation even at high temperature. Cross linked polyethylene is produced from polyethylene under high pressure with organic peroxides as additives. The application of heat and pressure is used to effect the cross linking. This causes the individual molecular chains to link with one another which in turn causes the material to change from a thermoplastic to an elastic material. An important advantage of XLPE as insulation for medium and high voltage cables is their low dielectric loss. The dielectric loss factor is about one decimal power lower than that of paper insulated cables and about two decimal powers lower than that of PVC- insulated cables. Since the dielectric constant is also more favourable, the mutual

capacitance of XLPE cables is also lower, thus reducing the charging currents and earth-leakage currents in networks without the rigid starpoint earthing.

POLYETHYLENE A

B H

H

H

H

H

C

C

C

C

C

H

H

H

H

H

XLPE C

H

D

H

C

C

H H

H H

C

C H

C

C H H

C

C H


CHARACTERISTICS AND ADVANTAGES OF XLPE Excellent Electrical and Physical Properties

XLPE cable constitues the best cable for transmission and distribution lines because of its excellent eletrical and physical properties. Capability of Carrying Large Currents The excellent resistance to thermal deformation and the excellent aging property of XLPE cable permit it to carry large currents under normal (90ยบC), emergency (130ยบC) or short circuit (250ยบC) conditions.

Ease of Installation XLPE cable withstands smaller radius bending and is lighter in weight, allowing for easy and reliable installation.Furthermore, the splicing and terminating methods for XLPE cable are simpler in comparison with other kinds of cables. Free from Height Limitation and Maintenance XLPE cables can be installed anywhere without special consideration of the route profile (height limitations) since it does not contain oil and thus is free from failures due to oil migration in oil-filled cables. No Metallic Sheath Required XLPE cable does not generally demand a metallic sheath. Thus it is free from the failures peculiar to metallic-sheathed cables, such as corrosion and fatigue.


MANUFACTURING PROCESS OF XLPE CABLES In the manufacture of medium and high voltage XLPE cable, our plant uses the latest technology available in the field by using an integrated high performance extrusion line which consists of a triple-layer crosshead and a water-free Completely Dry Curing and Cooling (CDCC) gas vulcanizing process. This type of extrusion line minimises the risk of introducing external contaminants and produces high quality XLPE cable. The conductor is paid off continuously through a metering capstan (which is the line speed master point), a triple extruder crosshead, a vulcanizing tube, an eccentricity monitoring unit, and haul-off caterpillars, and finally taken up. Using a group of three extruders, the triple crosshead allows simoultaneous extrusion of the cable insulation and two semiconducting screens with a high degree of smoothness and no voids or introduction of external contaminants. Precise and stable temperature at the crosshead are achieved by using multiple zonre temperature controls. In the water-free CDCC gas vulcanizing process, the triple-extruded cable core is cured in an inert pressurised gas tube and heated to the required temperature for material cross-linking. By varying the curing temperature and time, different cure percentages can be achieved as per customer requirements. The various functions of our integrated extrusion line such as line speed and curing tube temperature synchronisation are monitored and controlled via the process automation computers to ensure production of quality ramps. Calculated ramp parameters can be preset on the control unit and closed circuit TV system is used to ease the running of the lines.


STRUCTURAL DESIGN AND PERFORMANCE OF XLPE CABLES The design of XLPE cables conform to international standards and are similar to those in IEC 60502 and IEC 60840/XLPE insulated cables for medium and high voltages have, in general, circular conductors and only single core construction is adopted for the latter. Conductors may be of compacted stranded aluminium or stranded copper and special care if taken to ensure a smooth profile, free from sharp juts that could damage the insulation due to high local electric stresses. All XLPE insulated cables of Medium Voltage are supplied with extruded cross-linked semiconducting screens to protect the main solid XLPE

insulation. The conductor screen fills the interstices between the wires and provide a smooth circular envelope around the conductor. This diminishes the concentration of flux lines around the individual wires and hence the electrical stress around the conductor. While the insulation screen can be either strippable or bonded for MV cables depending on the customer’s option, bonded screen is used exclusively for high voltage cables. A layer of copper wires, applied over the extruded the insulation screen, as a metallic screen, provides an earthed envelope.The cross sectional area of this metallic screen is determined in order to satisfy the phase to earth fault level in the network.


PROCESS OF XLPE CABLES Although it has been verified that XLPE cables can be applied with a conductor temperature of 130ºC for emergency overload conditions, it must be understood that the erecting and laying conditions necessary to allow for those temperatures must be accurately carried out and controlled during installation in order to restrict thermomechanical problems. To be realistic, emergency conditions should be confined to 110ºC at conductor with the balance of 20ºC premeditated as a safety margin to cope with some concerns in the laying conditions. Subsequent to the constant use of XLPE for medium and high voltages for many years in the past, our plant has extensive field test results which evidently witness that XLPE insulated cables are of excellent quality particularly in respect of: •

partial discharges withstandability

impulse test withstandability

moisture resistance

overload current-tests under dielectric stress and thermic cycles


TESTING PROCEDURES FOR XLPE CABLES At our plant the testing process of XLPE cables and its accessories is subjected to the most stringent standards to ensure that our products meet the quality required for optimum problem free performance. In this respect our plant uses advanced state of the art testing equipment in a strict series of test processes to achieve the exacting quality standards.

Among the main test equipment 1.

Partial Discharge Test Sytem

2.

Impulse Test System

3.

Capacitance & Power Factor Measuring Bridge

4.

A.C. High Voltage Test System

5.

A.C. Long Time Test System


TESTING PROCEDURES FOR XLPE CABLES

The different tests employed are listed as such: Routine Tests

These are tests to monitor overall cable quality and function. Tests listed here include high voltage tests, conductor resistance tests, insulation resistance tests and voltage tests on protective sheath coverings. Type Tests These tests are used to calibrate and validate cable design type and they include bending tests, thermal stability tests, impulse voltage tests, head distortion tests, corona level tests and dielectric thermal resistance tests. Special Tests These tests are conducted to ensure major design changes to cables conform to proper performance tresholds. After Installation Tests These tests are to determine and ensure that cables installed are in optimum operating conditions. Conductor resistance test on the completed circuit verification tests of cross bonded systems and surge divertor tests are among the running lists of such critical test requirements.

Voltage designation; Uo/U (Um)

The rated voltages for cables are expressed in the form Uo/U (Um). Uo U Um

The voltage designation for British Standard is as follows: 0.6/1.0 (1.2) - 1.9/3.3 (3.6) - 3.8/6.6 (7.2) - 6.35/11 (12) - 8.7/15 (17.5) - 12.7/22 (24) - 19/33 (36) kV The voltage designation for IEC is as follows: 0.6/1.0 (1.2) - 1.8/3.0 (3.6) - 3.6/6.0 (7.2) - 6/10 (12) - 8.7/15 (17.5) - 12/20 (24) - 18/30 (36) kV


0.6 / 1Kv XLPE INSULATED UNAROMOURED CABLES Stranded copper conductor XLPE insulation PVC sheath

Shaped stranded aluminium conductor XLPE insulation Centre filler Mylar tape PVC sheath

DESCRIPTION Single core and multi-core cables with copper or aluminium conductors XLPE insulated and PVC sheathed. Cables are rated 0.6 / 1 kV and conform to IEC 60502. (Refer to tables 6.1, 6.2, 6.3, 6.4, and 6.5) CONSTRUCTION Conductor Plain circular or sector stranded copper or aluminium conductors, conform to IEC 228 class 2. Insulation XLPE (cross-linked polyethylene) rated 90°C. Colour for core identification Single core - red (black on request) Two core - red & black Three core - red, yellow and blue Four core - red, yellow, blue and black Assembly Two, three or four insulated conductors are laid up together, if necessary filled with non-hygroscopic material compatible with the insulation. The filling may be omitted provided the outer shape of the cable remains practically circular and no adhesion occur between cores and sheath. Sheath PVC type ST2 to IEC 60502 colour black. APPLICATIONS These cables are designated for general use including underground burial, where they are not likely to suffer mechanical damage. NOTE: Cables complying with BS 5467 and customer’s specification are available upon request, modifications, which serve to improve our products will be implemented without notice. * Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.

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CONSTRUCTION DATA Table 6.1 0.6 / 1kV SINGLE CORE XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm2

Approx. cable weight

Nominal thickness of insulation

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6 10

r.m. r.m. r.m. r.m. r.m.

0.7 0.7 0.7 0.7 0.7

1.4 1.4 1.4 1.4 1.4

6.1 6.5 7.1 7.6 8.6

52 64 83 107 153

-

16 25 35 50 70

c.c c.c c.c c.c c.c

0.7 0.9 0.9 1.0 1.1

1.4 1.4 1.4 1.4 1.4

9.6 11.3 12.6 14.0 16.0

217 324 423 554 771

115 160 195 240 325

95 120 150 185 240

c.c c.c c.c c.c c.c

1.1 1.2 1.4 1.6 1.7

1.5 1.5 1.6 1.6 1.7

18.2 19.9 22.2 24.4 27.5

1042 1293 1589 1971 2574

420 515 630 780 995

300 400 500 630 800 1000

c.c c.c c.c c.c c.c r.m.

1.8 2.0 2.2 2.4 2.6 2.8

1.8 1.9 2.0 2.2 2.3 2.4

30.3 34.0 37.7 42.5 42.4 52.5

3201 4070 5098 6561 8327 10426

1220 1535 1910 2485 2910 3870

Table 6.2 0.6 / 1kV TWO CORE XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm2

Approx. cable weight

Nominal thickness of insulation

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6 10

r.m. r.m. r.m. r.m. r.m.

0.7 0.7 0.7 0.7 0.7

1.8 1.8 1.8 1.8 1.8

10.1 10.9 12.0 13.1 15.0

134 155 200 255 365

-

16 25 35 50 70

c.c c.c s.m. s.m. s.m.

0.7 0.9 0.9 1.0 1.1

1.8 1.8 1.8 1.8 1.8

17.2 17.0 18.7 21.0 24.0

490 655 850 1110 1550

285 330 395 500 660

95 120 150 185 240

s.m. s.m. s.m. s.m. s.m.

1.1 1.2 1.4 1.6 1.7

1.9 2.0 2.2 2.3 2.5

26.9 29.9 33.4 37.1 41.7

2090 2620 3230 4020 5260

820 1030 1235 1545 1900

300 400

s.m. s.m.

1.8 2.0

2.6 2.9

45.8 51.6

6540 8350

2395 2940

11


Table 6.3 0.6 / 1kV THREE CORE XLPE INSULATED , PVC SHEATHED UNARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm2

Approx. cable weight

Nominal thickness of insulation

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6 10

r.m r.m r.m r.m r.m

0.7 0.7 0.7 0.7 0.7

1.8 1.8 1.8 1.8 1.8

10.5 11.4 12.6 13.8 15.8

149 185 245 320 470

-

16 25 35 50 70

c.c. c.c. s.m. s.m. s.m.

0.7 0.9 0.9 1.0 1.1

1.8 1.8 1.8 1.8 1.9

17.3 19.4 21.4 24.1 27.9

650 935 1235 1610 2285

345 450 560 695 965

95 120 150 185 240

s.m. s.m. s.m. s.m. s.m.

1.1 1.2 1.4 1.6 1.7

2.0 2.1 2.3 2.4 2.6

31.4 34.9 39.1 43.5 48.8

3090 3875 4780 5960 7810

1260 1560 1940 2395 3080

300 400 500

s.m. s.m. s.m.

1.8 2.0 2.2

2.8 3.0 3.3

53.7 60.7 65.7

9700 12400 15500

3765 4810 5935

Table 6.4 0.6 / 1kV FOUR CODE XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm2

12

Approx. cable weight

Nominal thickness of insulation

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6 10

r.m r.m r.m r.m r.m

0.7 0.7 0.7 0.7 0.7

1.8 1.8 1.8 1.8 1.8

10.5 11.4 12.6 13.8 15.8

149 185 245 320 470

-

16 25 35 50 70

c.c c.c s.m. s.m. s.m.

0.7 0.9 0.9 1.0 1.1

1.8 1.8 1.8 1.8 1.9

17.3 19.4 21.4 24.1 27.9

650 935 1235 1610 2285

345 450 560 695 965

95 120 150 185 240

s.m. s.m. s.m. s.m. s.m.

1.1 1.2 1.4 1.6 1.7

2.0 2.1 2.3 2.4 2.6

31.4 34.9 39.1 43.5 48.8

3090 3875 4780 5960 7810

1260 1560 1940 2395 3080

300 400 500

s.m. s.m. s.m.

1.8 2.0 2.0

2.8 3.0 3.3

53.7 60.7 65.7

9700 12400 15500

3765 4810 5935


Table 6.5 0.6 / 1kV FOUR CORE WITH REDUCED NEUTRAL CONDUCTOR, XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES Conductor Nominal crosssectional area

Shape

Approx. cable weight

Nominal crosssectional area

Phase

Shape

Neutral mm2

mm2

Nominal thickness of insulation

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

Phase

Neutral

mm

mm

mm

mm

kg/ km

kg/ km

10 16 25

r.m c.c c.c

6 10 16

r.m r.m r.m

0.7 0.7 0.9

0.7 0.7 0.7

1.8 1.8 1.8

17.3 18.9 21.7

560 780 1165

580

35 50 70

s.m s.m s.m

16 25 35

r.m r.m r.m

0.9 1.0 1.1

0.7 0.9 0.9

1.8 1.8 1.9

24.1 27.7 31.7

1515 1945 2840

740 870 1300

95 120 150

s.m s.m s.m

50 70 70

r.m r.m r.m

1.1 1.2 1.4

1.0 1.1 1.1

2.1 2.2 2.3

35.8 39.8 44.4

3650 4850 5660

1390 1780 2390

185 240 300

s.m s.m s.m

95 120 150

r.m r.m r.m

1.6 1.7 1.8

1.1 1.2 1.4

2.5 2.7 2.9

49.6 55.8 61.7

7045 9115 11300

2885 3630 4440

400 500

s.m s.m

185 240

r.m r.m

2.0 2.2

1.6 1.7

3.1 3.4

68.8 79.0

14580 18435

5825 7325

Note : r.m. - circular stranded conductor c.c - compacted circular stranded conductor s.m. - second stranded conductor, circular conductors can be produced on request

13


0.6 / 1Kv XLPE INSULATED AROMOURED CABLES Stranded copper conductor XLPE insulation Double steel tapes PVC sheath Centre filler Sectoral copper conductor XLPE insulation PVC bedding Round steel wire armour PVC sheath DESCRIPTION Single core and multi-core cables with copper of aluminium conductors XLPE insulated, armoured and PVC sheathed Cables are rated 0.6 / 1kV and conform to IEC 60502. (Refer to tables 6.6, 6.7, 6.8, 6.9 and 6.10) CONSTRUCTION Conductor Plain circular or sector stranded copper or aluminium conductors, conform to IEC 228 class 2. Insulation XLPE (cross-linked polyethylene) rated 90°C. Colour for core identification Colour for core indentification Single core - red Two core - red & black Three core - red, yellow and blue Four core - red, yellow, blue and black Assembly Two, three or four insulated conductor are laid up together, if necessary filled with non-hygroscopic material compatible with the insulation and covered with the layer of PVC bedding which may be an integral part of the filling. Armoured Galvanized steel wires applied over the PVC bedding. Sheath PVC type ST2 to IEC 60502 colour black. APPLICATIONS These cables are most suitable for underground burial where there is a risk of mechanical damage. NOTE: Cables complying with BS 5467 and customer’s specification are available upon request, modifications, which serve to improve our products will be implemented without notice.

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* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.6 0.6 / 1kV SINGLE CORE, XLPE INSULATED, PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm²

Approx. cable weight

Nominal thickness of insulation

Nominal diameter of aluminium wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

50 70 95 120

c.c c.c c.c c.c

1.0 1.1 1.1 1.2

1.25 1.25 1.25 1.60

1.8 1.8 1.8 1.8

20.0 21.0 21.8 25.8

760 985 1260 1645

460 555 660 890

150 185 240 300

c.c c.c c.c c.c

1.4 1.6 1.7 1.8

1.60 1.60 1.60 1.60

1.8 1.8 1.9 1.9

27.7 30.0 32.7 35.1

1970 2385 3020 3665

1040 1220 1475 1725

400 500 630 800 1000

c.c c.c c.c c.c c.c

2.0 2.2 2.4 2.6 2.8

2.00 2.00 2.00 2.50 2.50

2.1 2.2 2.3 2.5 2.7

40.0 43.5 48.2 53.9 62.5

4740 5830 7390 9540 11860

2260 2705 3345 4375 6350

Table 6.7 0.6/ 1 kV TWO CORE, XLPE INSULATED PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Approx. cable weight

Shape

mm²

Nominal thickness of insulation

Nominal diameter of steel wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6

r.m r.m r.m r.m

0.7 0.7 0.7 0.7

0.8 0.8 0.8 0.8

1.8 1.8 1.8 1.8

14.0 14.9 16.0 17.1

350 400 475 550

-

10 16 25 35

r.m c.c c.c s.m

0.7 0.7 0.9 0.9

1.25 1.25 1.6 1.6

1.8 1.8 1.8 1.7

19.0 20.3 23.2 24.9

700 860 1280 1525

655 955 1075

50 70 95 120

s.m s.m s.m s.m

1.0 1.1 1.1 1.2

1.6 1.6 2.0 2.0

1.8 2.0 2.1 2.2

27.1 30.5 34.2 37.5

1870 2450 3310 4010

1260 1570 2090 2470

150 185 240 300 400

s.m s.m s.m s.m s.m

1.4 1.6 1.7 1.8 2.0

2.0 2.5 2.5 2.5 2.5

2.3 2.5 2.7 2.8 3.1

40.9 45.9 50.8 54.8 61.2

4740 6120 7650 9115 11335

2845 3745 4500 5160 6275

Note : r.m. - circular stranded conductor c.c - compacted circular stranded conductor s.m. - second stranded conductor, circular conductors can be produced on request

15


Table 6.8 0.6 / 1kV THREE CORE XLPE INSULATED , PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm²

Approx. cable weight

Nominal thickness of insulation

Nominal diameter of aluminium wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6 10

r.m r.m r.m r.m r.m

0.7 0.7 0.7 0.7 0.7

0.80 0.80 0.80 0.80 1.25

1.8 1.8 1.8 1.8 1.8

14.5 15.4 16.6 17.8 20.5

385 450 535 640 950

-

16 25 35 50 70

c.c. c.c. s.m s.m s.m

0.7 0.9 0.9 1.0 1.1

1.25 1.60 1.60 1.60 2.00

1.8 1.8 1.8 1.8 2.0

22.0 25.7 27.7 30.5 35.1

1180 1650 2015 2520 3535

840 1165 1340 1605 2215

95 120 150 185 240

s.m s.m s.m s.m s.m

1.1 1.2 1.4 1.6 1.7

2.00 2.00 2.50 2.50 2.50

2.2 2.3 2.5 2.6 2.8

39.3 42.7 47.9 52.7 58.1

4565 5510 6990 8120 10500

2735 3200 4150 4555 5770

300 400 500

s.m s.m s.m

1.8 2.0 2.2

2.50 2.50 3.15

3.0 3.2 3.5

63.7 70.3 80.1

12695 15540 20385

6760 7950 10820

Table 6.9 0.6 / 1kV FOUR CORE XLPE INSULATED, PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm²

Approx. cable weight

Nominal thickness of insulation

Nominal diameter of aluminium wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

1.5 2.5 4 6 10

r.m r.m r.m r.m r.m

0.7 0.7 0.7 0.7 0.7

0.8 0.8 0.8 1.3 1.3

1.8 1.8 1.8 1.8 1.8

15.3 16.3 17.6 19.7 22.0

435 510 615 850 1100

-

16 25 35 50 70

c.c. c.c. s.m. s.m. s.m.

0.7 0.9 0.9 1.0 1.1

1.6 1.6 1.6 2.0 2.0

1.8 1.8 1.9 2.0 2.2

25.2 28.0 30.5 33.7 39.5

1530 2030 2525 3160 4555

1120 1380 1625 1945 2795

95 120 150 185 240

s.m. s.m. s.m. s.m. s.m.

1.1 1.2 1.4 1.6 1.7

2.0 2.5 2.5 2.5 2.5

2.3 2.5 2.6 2.8 3.0

43.7 49.1 53.7 58.9 65.5

5795 7485 8925 10830 13720

3355 4400 5135 6080 7415

300 400 500

s.m. s.m. s.m.

1.8 2.0 2.2

2.5 3.15 3.15

3.2 3.5 3.8

71.3 80.9 90.8

16585 21580 26150

8675 11460 13395

Note : r.m. - circular stranded conductor c.c - compacted circular stranded conductor s.m. - second stranded conductor, circular conductors can be produced on request

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Table 6.10 0.6 / 1 kV FOUR CABLE WITH REDUCED NEUTRAL OCNDUCTOR, XLPE INSULATED, PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Shape

Approx. cable weight

Nominal crosssectional area

Phase

Shape

Neutral

mm2

Nominal thickness of insulation

Nominal diameter of Nominal steel wire thickness of sheath

Approx. overall diameter

Copper

Aluminium

Phase

Neutral

Neutral

mm

mm

mm

mm

mm

kg/ km

kg/ km

16 25 35

c.c. c.c. s.m.

10 16 16

r.m. r.m. r.m.

0.7 0.9 0.9

0.7 0.7 0.7

1.25 1.6 1.6

1.8 1.8 1.8

25.2 28.0 30.5

1275 1880 2415

1295 1640

50 70 95

s.m. s.m. s.m.

25 35 50

r.m. r.m. r.m.

1.0 1.1 1.1

0.9 0.9 1.0

1.6 2.0 2.0

1.9 2.1 2.2

33.7 39.5 43.7

2960 4330 5415

1888 2790 3290

120 150 185

s.m. s.m. s.m.

70 70 95

r.m. r.m. r.m.

1.2 1.4 1.6

1.1 1.1 1.1

2.0 2.5 2.5

2.3 2.5 2.7

49.1 53.7 58.9

7150 7675 9930

4255 4405 5770

240 300 400 500

s.m. s.m. s.m. s.m.

120 150 185 240

r.m. r.m. r.m. r.m.

1.7 1.8 2.0 2.2

1.2 1.4 1.6 1.7

2.5 2.5 2.5 3.15

2.9 3.0 3.3 3.6

65.5 71.3 80.9 90.8

12390 14845 19700 23880

6905 7985 10945 12690

17


1.8 / 3kV XLPE INSULATED ARMOURED CABLES Stranded aluminium conductor XLPE insulation PVC bedding Round hard drawn aluminium wire armour PVC outersheath DESCRIPTION Single core and multi-core cables with copper or aluminium conductors XLPE insulated, armoured and PVC sheathed. Cables are rated 1.8 / 3kV and conform to IEC 60502. (Refer to tables 6.11 and 6.12) CONSTRUCTION Conductor Plain circular stranded copper or aluminium conductors, conform to IEC 228 class 2. Insulation XLPE (cross-linked polyethylene) rated 90°C Colour for core identification Single core - red Three core - red, yellow and blue Assembly Three insulated conductors are laid up together, if necessary filled with non-hygroscopic material compatible with the insulation and covered with a layer of PVC bedding which may be an integral part of the filling. Armoured Galvanized steel wires applied over the PVC bedding. Sheath PVC type ST2 to IEC 60502 colour black. APPLICATIONS These cables are most suitable for underground burial where there is a risk of mechanical damage. NOTE : Cables complying with BS 5467 and customer’s specification are available upon request. Modifications which serve to improve our products wil be implemented without notice.

18

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.11 1.8 / 3.0 (3.6)kV SINGLE CORE XLPE INSULATED, PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm²

Approx. cable weight

Nominal thickness of insulation

Nominal diameter of aluminium wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

16 25 35 50

c.c. c.c. c.c. c.c.

2.0 2.0 2.0 2.0

0.80 1.25 1.25 1.25

1.8 1.8 1.8 1.8

17.0 19.0 19.5 21.2

450 610 680 830

350 450 460 532

70 95 120 150

c.c. c.c. c.c. c.c.

2.0 2.0 2.0 2.0

1.25 1.60 1.60 1.60

1.8 1.8 1.8 1.8

22.7 26.0 27.5 29.0

1060 1530 1725 2030

630 930 970 1100

185 240 300 400

c.c. c.c. c.c. c.c.

2.0 2.0 2.0 2.0

1.60 1.60 1.60 2.00

1.8 1.9 2.0 2.1

31.0 33.5 36.0 40.0

2415 3060 3750 4750

1250 1515 1810 2270

500 630 800 1000

c.c. c.c. c.c. r.m.

2.2 2.4 2.6 2.8

2.00 2.00 2.50 2.50

2.2 2.3 2.5 2.7

43.5 48.2 53.9 62.5

5835 7390 9540 11860

2710 3345 4375 6350

Table 6.11 1.8 / 3.0 (3.6)kV THREE CORE XLPE INSULATED, PVC SHEATHED ARMOURED CABLES Conductor Nominal crosssectional area

Shape

mm²

Approx. cable weight

Nominal thickness of insulation

Nominal diameter of aluminium wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

16 25 35 50

c.c. c.c. c.c. c.c.

2.0 2.0 2.0 2.0

1.6 1.6 1.6 2.0

1.8 1.9 1.9 2.1

30.0 32.5 35.5 39.5

1250 2130 2680 3520

945 1645 2005 2605

70 95 120 150

c.c. c.c. c.c. c.c.

2.0 2.0 2.0 2.0

2.0 2.0 2.5 2.5

2.2 2.3 2.4 2.5

43.0 47.0 52.0 55.5

4300 5300 6770 7800

2980 3470 4455 4960

185 240 300 400 500

c.c. c.c. c.c. c.c. c.c.

2.0 2.0 2.0 2.0 2.2

2.5 2.5 2.5 2.5 3.15

2.7 2.8 3.0 3.2 3.6

60.0 65.0 70.5 77.0 87

9310 11500 13800 16900 21970

5745 6770 7865 9310 12405

Note : r.m. - circular stranded conductor c.c - compacted circular stranded conductor s.m. - second stranded conductor, circular conductors can be produced on request

19


3.6 / 6kV INSULAED SINGLE CORE CABLES

6

5

4

3

2

1

DESCRIPTION Circular straded compacted or aluminium conductor, XLPE insulated, with copper wire or copper tape screen and PVC outer sheath. Complies with IEC 60502 (Refer to tables 6.13 and 6.14) CONSTRUCTION 1. Conductor Plain circular compacted copper or alumimium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material. Insulation screen 5. Metallic part Copper wire or copper tape screen 6. Outer sheath PVC type ST2 to IEC 60502 colour black APPLICATIONS For installation on trays, ducts or direct burial. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

20

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.13 3.6/ 6.0 (7.2)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 35 50 70

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

6.0 7.1 8.3 9.9

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

95 120 150 185

11.7 13.2 14.6 16.4

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

240 300 400 500

18.8 21.0 23.8 26.7

2.6 2.8 3.0 3.2

630 800 1000

30.5 34.3 37.6

3.2 3.2 3.2

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

1.5 1.5 1.6 1.6

18.0 19.0 21.0 22.0

550 655 810 1040

395 435 515 610

0.1 0.1 0.1 0.1

1.7 1.7 1.8 1.8

24.0 26.0 27.0 29.0

1335 1595 1890 2275

740 840 965 1110

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

1.9 2.0 2.1 2.2

32.0 35.0 39.0 43.0

2875 3555 4410 5535

1330 1620 1930 2410

0.6 0.6 0.6

0.1 0.1 0.1

2.3 2.5 2.6

48.0 50.2 51.4

6995 8750 -

2950 3620 4265

Table 6.13 3.6/ 6.0 (7.2)kV SINGLE CORE XLPE INSULATED WITH COPPER WIRE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor/ screen

Screening Nominal diameter of conductor

mm2

Nominal thickness of insulation

Approx. weight of cable Approx. overall diameter

Copper

Aluminium

mm

mm

kg/ km

kg/ km

Thickness of extruded SC layer

Nominal thickness of sheath

mm

mm

25 / 16 35 / 16 50 / 16 70 / 16

6.0 7.1 8.3 9.9

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

1.5 1.6 1.6 1.6

20 21 24 26

675 800 980 1225

515 580 680 795

95 / 16 120 / 16 150 / 25 185 / 25

11.7 13.2 14.6 16.4

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

1.7 1.7 1.8 1.8

28 30 31 33

1505 1785 2150 2550

905 1030 1220 1385

240 / 25 300 / 25 400 / 35 500 / 35

18.8 21.0 23.8 26.7

2.6 2.8 3.0 3.2

0.6 0.6 0.6 0.6

1.9 2.0 2.1 2.2

36 39 42 46

3170 3840 4855 5910

1625 1900 2375 2785

630 / 35 800 / 50 1000 / 50

30.5 34.3 37.6

3.2 3.2 3.2

0.6 0.6 0.6

2.3 2.5 2.6

50 54 58

7365 9210 -

3320 4080 4725

21


3.6 / 6kV XLPE INSULATED THREE CORE CABLES

8

7

6

5

4

3

2

1

DESCRIPTION Stranded circular compacted copper or aluminium conductors, XLPE insulated, copper tape screened, three cores assembled together with non-hygroscopic polypropylene fillers, covered with extruded bedding, armoured or unarmoured and PVC sheathed Cables comply with IEC 60502. (Refer to tables 6.15 and 6.16) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound. 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper tapes 0.10mm thickness 6. Bedding Taped bedding for unarmoured cables, extruded PVC bedding for armoured cables. 7. Armour Galvanized steel wires/ tapes applied helically over the PVC bedding. 8. Outer sheath PVC types ST2 to IEC 60502 colour black. Colour for core identification Red, yellow and blue narrow tapes applied between non metallic and metallic part of insulation screen. APPLICATIONS These cables are generally suitable for direct burial or for installation on trays or ducts. Where there is a risk of mechanical damage, armoured cables should be used. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

22

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.15 3.6 / 6(7.2)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 35 50 70

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

6.0 7.1 8.3 9.9

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

95 120 150 185

11.7 13.2 14.6 16.4

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

240 300 400 500

18.8 21.0 23.8 26.7

2.6 2.8 3.0 3.2

0.6 0.6 0.6 0.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.1 2.1 2.2 2.3

35.0 37.0 40.0 44.0

1540 1900 2390 3130

1060 1230 1480 1810

0.1 0.1 0.1 0.1

2.5 2.6 2.7 2.8

48.0 52.0 55.0 59.0

4060 4910 5820 7060

2230 2600 2980 3500

0.1 0.1 0.1 0.1

3.0 3.2 3.4 3.6

65.0 72.0 79.0 87.0

8990 11100 14000 17300

4260 5170 6410 7735

Nominal thickness of sheath

Approx. overall diameter

Table 6.16 3.6 / 6 (7.2) kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED ARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 35 50 70

Screening Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

6.0 7.1 8.3 9.9

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

95 120 150 185

11.7 13.2 14.6 16.4

2.5 2.5 2.5 2.5

0.6 0.6 0.6 0.6

240 300 400 500

18.8 21.0 23.8 26.7

2.6 2.8 3.0 3.2

0.6 0.6 0.6 0.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.0 2.5 2.5 2.5

2.3 2.4 2.5 2.6

45 48 51 55

3225 3980 4335 4920

0.1 0.1 0.1 0.1

2.5 2.5 2.5 2.5

2.7 2.9 3.0 3.1

59 63 66 70

5545 6180 6825 7560

0.1 0.1 0.1 0.1

2.5 3.15 3.15 3.15

3.3 3.5 3.8 4.0

76 85 93 101

8700 11200 12990 15190

23


6 / 10Kv XLPE INSULATED SINGLE CORE CABLES

6

5

4

3

2

1

DESCRIPTION Circular stranded compacted copper or aluminium conductor, XLPE insulated, with copper tape screen and PVC outer sheath. Complies with IEC 60502 ( Refer to tables 6.17 and 6.18) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper wire of copper tape screen 6. Outer Sheath PVC type ST2 to IEC 60502 colour black. APPLICATIONS For installation on trays, ducts or direct burial. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

24

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.17 6 / 10 (12) kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 35 50 70

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

6.0 7.1 8.3 9.9

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

95 120 150 185

11.7 13.2 14.6 16.4

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

240 300 400 500

18.8 21.0 23.8 26.7

3.4 3.4 3.4 3.4

630 800 1000

30.5 34.3 37.6

3.4 3.4 3.4

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

1.6 1.6 1.6 1.7

20.0 21.0 23.0 24.0

615 745 890 1130

460 525 590 700

0.1 0.1 0.1 0.1

1.7 1.8 1.8 1.9

26.0 28.0 29.0 31.0

1425 1695 2150 2520

830 940 1225 1355

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.0 2.0 2.2 2.2

34.0 37.0 40.0 43.0

3015 3630 4510 5565

1470 1690 2030 2440

0.6 0.6 0.6

0.1 0.1 0.1

2.4 2.5 2.6

48.0 51.0 54.4

7050 8815 -

3005 3685 4320

Table 6.18 6 / 10 (12) kV SINGLE CORE XLPE INSULATED WITH COPPER WIRE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 / 16 35 / 16 50 / 16 70 / 16

Screening Thickness of extruded SC layer

Nominal thickness of sheath

Approx. overall diameter

mm

mm

mm

6.0 7.1 8.3 9.9

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

95 / 16 120 / 16 150 / 25 185 / 25

11.7 13.2 14.6 16.4

3.4 3.4 3.4 3.4

240 / 25 300 / 25 400 / 35 500 / 35

18.8 21.0 23.8 26.7

630 / 35 800 / 50 1000 / 50

30.5 34.3 37.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

1.6 1.6 1.7 1.7

22 23 26 28

745 860 1065 1300

590 640 765 870

0.6 0.6 0.6 0.6

1.8 1.8 1.9 1.9

30 32 33 35

1600 1870 2255 2640

1000 1115 1325 1475

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

2.0 2.1 2.2 2.3

38 40 43 46

3280 3930 4900 5940

1735 1990 2420 2815

3.4 3.4 3.4

0.6 0.6 0.6

2.4 2.5 2.7

50 55 59

7425 9280 -

3380 4150 4820

25


6 / 10kV XLPE INSULATED THREE CORE CABLES

8

7

6

5

4

3

2

1

DESCRIPTION Stranded circular compacted copper or aluminium conductors, XLPE insulated, copper tape screened, three cores assembled together with non-hygroscopic polypropylene fillers, covered with extruded bedding, armoured or unarmoured and PVC sheathed. Cables comply with IEC 60502. (Refer to tables 6.19 and 6.20) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper tapes 0.10 mm thickness 6. Bedding Taped bedding or extruded PVC bedding 7. Armour Galvanized steel wires/ tapes applied helically over the PVC bedding. 8. Outer sheath PVC types ST2 to IEC 60502 colour black. Colour for core identification Red, yellow and blue narrow tapes applied between non metallic and metallic part of insulation screen. APPLICATIONS These cables are generally suitable for direct burial or for installation on trays or ducts. Where there is a risk of mechanical damage, armoured cables should be used. NOTE : NOTE: Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

26

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.19 6 / 10(12)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 35 50 70

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

6.0 7.1 8.3 9.9

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

95 120 150 185

11.7 13.2 14.6 16.4

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

240 300 400 500

18.8 21.0 23.8 26.7

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.2 2.3 2.4 2.5

39.0 42.0 45.0 49.0

1830 2220 2730 3500

1350 1550 1820 2180

0.1 0.1 0.1 0.1

2.6 2.7 2.8 2.9

53.0 56.0 60.0 64.0

4410 5310 6250 7510

2580 3000 3410 3950

0.1 0.1 0.1 0.1

3.1 3.3 3.5 3.7

69.0 75.0 81.0 88.0

9440 11500 14300 17600

4710 5570 6710 8030

Table 6.20 6 / 10(12)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED ARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

Screening Nominal thickness of SC layer

mm2

mm

mm

25 35 50 70

6.0 7.1 8.3 9.9

95 120 150 185 240 300 400 500

Approx. thickness of Cu tape

Nominal diameter of steel wire

Nominal thickness of sheath

Approx. overall diameter

mm

mm

mm

mm

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.5 2.5 2.5 2.5

11.7 13.2 14.6 16.4

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

18.8 21.0 23.8 26.7

3.4 3.4 3.4 3.4

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.5 2.6 2.7 2.8

52 53 56 60

4790 5200 5630 6680

4300 4525 4715 2360

2.5 2.5 2.5 2.5

2.9 3.0 3.1 3.3

64 67 71 75

7870 9020 10735 11750

6040 6705 7890 8185

3.15 3.15 3.15 3.15

3.5 3.7 3.9 4.1

82 89 98 102

15060 17705 21725 25025

10330 11770 14135 15460

27


8.7 / 15(17.5)kV XLPE INSULATED SINGLE CORE CABLES

6

5

4

3

2

1

DESCRIPTION Circular stranded compacted copper or aluminiun conductor, XLPE insulated, with copper wire of copper tape screen and pvc outer sheath. Complies with IEC 60502 (Refer to tables 6.21 and 6.22) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper wire or copper tape screen 6. Outer sheath PVC type ST2 to IEC 60502 colour black APPLICATIONS For installation on trays, ducts or direct burial. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

28

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.21 8.7 / 15(17.5)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

Screening Nominal thickness of SC layer

Approx. thickness of Cu tape

mm2

mm

mm

mm

35 50 70 95

7.1 8.3 9.9 11.7

4.5 4.5 4.5 4.5

120 150 185 240

13.2 14.6 16.4 18.8

300 400 500 630 800 1000

Nominal thickness of sheath

Approx. overall diameter

mm

mm

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

21.0 23.8 26.7 30.5

4.5 4.5 4.5 4.5

34.3 37.6

4.5 4.5

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

1.7 1.7 1.8 1.8

24.0 25.0 27.0 28.0

845 990 1240 1535

625 690 810 940

0.1 0.1 0.1 0.1

1.9 1.9 2.0 2.1

30.0 32.0 34.0 37.0

1825 2110 2545 3165

1070 1180 1380 1620

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.1 2.2 2.3 2.4

39.0 42.0 45.0 51.0

3790 4655 5755 7295

1850 2175 2630 3250

0.6 0.6

0.1 0.1

2.6 2.7

53.4 57.2

9020 -

3890 4560

Table 6.22 8.7 / 15(17.5)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

35 / 16 50 / 16 70 / 16 95 / 16

Screening Thickness of extruded SC layer

Nominal thickness of sheath

Approx. overall diameter

mm

mm

mm

7.1 8.3 9.9 11.7

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

120 / 16 150 / 25 185 / 25 240 / 25

13.2 14.6 16.4 18.8

4.5 4.5 4.5 4.5

300 / 25 400 / 35 500 / 35 630 / 35

21.0 23.8 26.7 30.5

800 / 50 1000 / 50

34.3 37.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

1.7 1.7 1.8 1.8

27 29 31 33

955 1150 1405 1700

735 850 975 1100

0.6 0.6 0.6 0.6

1.9 1.9 2.0 2.1

34 36 38 40

1985 2380 2780 3420

1230 1450 1615 1875

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

2.1 2.3 2.4 2.5

43 46 49 53

4075 5065 6110 7565

2135 2585 2985 3520

4.5 4.5

0.6 0.6

2.6 2.7

57 61

9480 -

4350 5015

29


8.7 / 15kV XLPE INSULATED THREE CORE CABLES

8

7

6

5

4

3

2

1

DESCRIPTION Stranded circular compacted copper or aluminium conductors, XLPE insulated, copper tape screened, three cores assembled together with non-hygroscopic polypropylene fillers, covered with extruded bedding, armoured or unarmoured and PVC sheathed. Cables comply with IEC 60502. (Refer to tables 6.23 and 6.24) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper tapes 0.10 mm thickness 6. Bedding Taped bedding or extruded PVC bedding. 7. Armour Galvanized steel wires/tapes applied helically over the PVC bedding. 8. Outer sheath PVC types ST2 to IEC 60502 colour black. Colour for core identification Red, yellow and blue narrow tapes applied between non metallic and metallic part of insulation screen. APPLICATIONS These cables are generally suitable for direct burial or for installation on trays or ducts. Where there is a risk of mechanical damage, armoured cables should be used. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

30

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.23 8.7 / 15(17.5)kV THREE-CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

25 35 50 70

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

6.0 7.1 8.3 9.9

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

95 120 150 185

11.7 13.2 14.6 16.4

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

240 300 400 500

18.8 21.0 23.8 26.7

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.4 2.5 2.6 2.7

45.0 47.0 51.0 54.0

2180 2560 3100 3910

1700 1890 2190 2590

0.1 0.1 0.1 0.1

2.8 2.9 3.0 3.1

59.0 62.0 65.0 70.0

4890 5790 6740 8020

3060 3480 3900 4460

0.1 0.1 0.1 0.1

3.3 3.5 3.7 3.9

75.0 81.0 87.0 94.0

10100 12100 14900 18300

5370 6170 7310 8730

Table 6.24 8.7 / 15(17.5)kV THREE-CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED ARMOURED CABLES Nominal crosssectional area of conductor

Screening

Nominal diameter of conductor

Nominal thickness of insulation

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm2

mm

mm

mm

25 35 50 70

6.0 7.1 8.3 9.9

4.5 4.5 4.5 4.5

95 120 150 185

11.7 13.2 14.6 16.4

240 300 400 500

18.8 21.0 23.8 26.7

Approx. weight of cable

Nominal diameter of steel wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm

mm

mm

mm

kg/ km

kg/ km

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.5 2.5 2.5 2.5

2.6 2.7 2.9 3.0

55 58 61 65

5035 5620 6340 7410

4550 4945 5425 6090

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.5 2.5 3.15 3.15

3.1 3.2 3.4 3.5

69 73 78 82

8660 9780 11880 13510

6830 7465 9040 9945

4.5 4.5 4.5 4.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

3.15 3.15 3.15 3.15

3.6 3.8 4.1 4.3

88 94 104 108

16010 18700 22810 26100

11280 12765 15220 16530

31


12 / 20kV XLPE INSULATED SINGLE CORE CABLES

6

5

4

3

2

1

DESCRIPTION Circular stranded compacted copper or aluminium conductor, XLPE insulated, with copper wire or copper tape screen and PVC outer sheath. Complies with IEC 60502 (Refer to tables 6.25 and 6.26) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper wire or copper tape screen 6. Outer Sheath PVC type ST2 to IEC 60502 colour black APPLICATIONS For installation on trays, ducts or direct burial. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

32

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.25 12 / 20(24)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

35 50 70 95

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

7.1 8.3 9.9 11.7

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

120 150 185 240

13.2 14.6 16.4 18.8

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

300 400 500 630

21.0 23.8 26.7 30.5

5.5 5.5 5.5 5.5

800 1000

34.3 37.6

5.5 5.5

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

1.7 1.8 1.8 1.9

26.0 27.0 29.0 31.0

935 1090 1340 1655

715 790 910 1055

0.1 0.1 0.1 0.1

1.9 2.0 2.0 2.1

32.0 34.0 36.0 38.0

1925 2270 2665 3280

1170 1340 1500 1735

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.2 2.3 2.4 2.5

41.0 44.0 48.0 53.0

3915 4775 5930 7480

1975 2295 2805 3435

0.6 0.6

0.1 0.1

2.6 2.8

55.4 59.4

9195 -

4065 4770

Table 6.26 12 / 20(24)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor/ screen

Screening

Approx. weight of cable

Nominal diameter of conductor

Nominal thickness of insulation

Thickness of extruded SC layer

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

mm2

mm

mm

mm

mm

mm

kg/ km

kg/ km

35 / 16 50 / 16 70 / 16 95 / 16

7.1 8.3 9.9 11.7

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

1.8 1.8 1.9 1.9

30 31 33 35

1100 1250 1510 1810

880 950 1080 1210

120 / 16 150 / 25 185 / 25 240 / 25

13.2 14.6 16.4 18.8

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

2.0 2.0 2.1 2.1

36 38 40 43

2105 2490 2905 3560

1350 1560 1740 2015

300 / 25 400 / 35 500 / 35 630 / 35

21.0 23.8 26.7 30.5

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

2.2 2.3 2.4 2.5

45 48 51 55

4230 5225 6285 7765

2290 2745 3160 3720

800 / 50 1000 / 50

34.3 37.6

5.5 5.5

0.6 0.6

2.7 2.8

59 63

9650 -

4520 5225

33


12 / 20kV XLPE INSULATED THREE CORE CABLES

8

7

6

5

4

3

2

1

DESCRIPTION Circular stranded compacted copper or aluminium conductors, XLPE insulated, copper tape screened, three cores asembled together with non-hygroscopic polypropylene fillers, covered with extruded bedding, armoured or unarmoured and PVC sheathed. Cables comply with IEC 60502. (Refer to tables 6.27 and 6.28) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper tapes 0.10 mm thickness 6. Bedding Taped bedding or extruded PVC bedding. 7. Armour Galvanized steel wires/tapes applied helically over the PVC bedding. 8. Outer sheath PVC types ST2 to IEC 60502 colour black. Colour for core identification Red, yellow and blue narrow tapes applied between non-metallic and meatallic part of insulation screen. APPLICATIONS These cables are generally suitable for direct burial or for installation on trays of ducts. Where there is a risk of mechanical damage, armoured cables should be used. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

34

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.27 12 / 20(24)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNAROMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

35 50 70 95

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

7.1 8.3 9.9 11.7

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

120 150 185 240

13.2 14.6 16.4 18.8

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

300 400 500

21.0 23.8 26.7

5.5 5.5 5.5

0.6 0.6 0.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.6 2.7 2.8 3.0

53.0 56.0 60.0 64.0

3165 3640 4545 5565

2490 2725 3225 3735

0.1 0.1 0.1 0.1

3.1 3.2 3.3 3.5

68.0 71.0 75.0 80.0

6560 7570 8915 11050

4245 4725 5350 6320

0.1 0.1 0.1

3.6 3.9 4.1

87.0 93.0 101.0

13295 16235 19200

7360 8645 9635

Table 6.28 12 / 20(24)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED AROMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

Screening Nominal thickness of SC layer

mm2

mm

mm

35 50 70 95

7.1 8.3 9.9 11.7

120 150 185 240 300 400 500

Approx. thickness of Cu tape

Nominal diameter of steel wire

Nominal thickness of sheath

Approx. overall diameter

mm

mm

mm

mm

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.5 2.5 2.5 2.5

13.2 14.6 16.4 18.8

5.5 5.5 5.5 5.5

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

21.0 23.8 26.7

5.5 5.5 5.5

0.6 0.6 0.6

0.1 0.1 0.1

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.9 3.0 3.1 3.2

63 66 70 74

6275 7000 8050 9355

5600 6085 6730 7525

2.5 3.15 3.15 3.15

3.4 3.5 3.6 3.8

79 83 87 93

11400 12635 14345 16920

9090 9790 10780 12190

3.15 3.15 3.15

4.0 4.2 4.4

99 105 112

19655 23060 27060

13720 15470 17490

35


18 / 30kV XLPE INSULATED SINGLRE CORE CABLES

6

5

4

3

2

1

DESCRIPTION Circular stranded compacted copper or aluminium conductor, XLPE insulated, with copper wire or copper tape screen and PVC outer sheath. Complies with IEC 60502 (Refer to tables 6.29 and 6.30) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2. 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper wire or copper tape screen 6. Outer Sheath PVC type ST2 to IEC 60502 colour black APPLICATIONS For installation on trays, ducts or direct burial. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

36

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.29 18 / 30(36)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

50 70 95

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

8.3 9.9 11.7

8.0 8.0 8.0

0.6 0.6 0.6

0.1 0.1 0.1

120 150 185

13.2 14.6 16.4

8.0 8.0 8.0

0.6 0.6 0.6

240 300 400

18.8 21.0 23.8

8.0 8.0 8.0

500 630 800 1000

26.7 30.5 34.3 37.6

8.0 8.0 8.0 8.0

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.0 2.0 2.1

33.0 35.0 36.0

1380 1650 1995

1080 1230 1395

0.1 0.1 0.1

2.1 2.2 2.2

38.0 40.0 41.0

2285 2620 3035

1530 1690 1870

0.6 0.6 0.6

0.1 0.1 0.1

2.3 2.4 2.5

44.0 47.0 50.0

3670 4530 5300

2125 2590 2820

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

2.6 2.7 2.8 3.0

53.0 59.0 60.8 65.0

6455 8005 9710 -

3330 3960 4580 5335

Table 6.30 18 / 30(36)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

50 / 16 70 / 16 95 / 16

Screening Thickness of extruded SC layer

Nominal thickness of sheath

Approx. overall diameter

mm

mm

mm

8.3 9.9 11.7

8.0 8.0 8.0

0.6 0.6 0.6

120 / 16 150 / 25 185 / 25

13.2 14.6 16.4

8.0 8.0 8.0

240 / 25 300 / 25 400 / 35

18.8 21.0 23.8

500 / 35 630 / 35 800 / 50 1000 / 50

26.7 30.5 34.3 37.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

2.0 2.0 2.1

36 38 40

1530 1780 2120

1230 1350 1520

0.6 0.6 0.6

2.1 2.2 2.2

41 43 45

2410 2820 3255

1655 1890 2070

8.0 8.0 8.0

0.6 0.6 0.6

2.3 2.4 2.5

48 50 53

3910 4620 5645

2365 2690 3165

8.0 8.0 8.0 8.0

0.6 0.6 0.6 0.6

2.6 2.7 2.9 3.0

57 60 65 69

6730 8210 10195 -

3605 4165 5065 5785

37


18 / 30Kv XLPE INSULATED THREE CORE CABLES

8

7

6

5

4

3

2

1

DESCRIPTION Stranded circular compacted copper or aluminium conductors, XLPE insulated, copper tape screened, three cores assembled together with non-hygroscopic polyprpylene fillers, covered with extruded bedding, armoured or unarmoured and PVC sheathed. Cables comply with IEC 60502. ( Refer to tables 6.31 and 6.32) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2 2. Conductor Screen Extruded semiconductive compound 3. Insulation XLPE (cross-linked polyethylene) rated 90°C Insulation screen 4. Non-metallic part Extruded layer of semiconductive material Insulation screen 5. Metallic part Copper tapes 0.10 mm thickness 6. Bedding Taped bedding or extruded PVC bedding. 7. Armour Galvanized steel wires/tapes applied helically over the PVC bedding. 8. Outer sheath PVC types ST2 to IEC 60502 colour black. Colour for core identification Red, yellow and blue narrow tapes applied between non-metallic and meatallic part of insulation screen. APPLICATIONS These cables are generally suitable for direct burial or for installation on trays or ducts. Where there is a risk of mechanical damage, armoured cables should be used. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

38

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.31 18 / 30(36)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNAROMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

50 70 95

Screening

Nominal thickness of sheath

Approx. overall diameter

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

8.9 9.9 11.7

8.0 8.0 8.0

0.6 0.6 0.6

0.1 0.1 0.1

120 150 185

13.2 14.6 16.4

8.0 8.0 8.0

0.6 0.6 0.6

240 300 400

18.8 21.0 23.8

8.0 8.0 8.0

0.6 0.6 0.6

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

3.1 3.2 3.3

67.0 71.0 75.0

4785 5690 6775

3870 4370 4945

0.1 0.1 0.1

3.5 3.6 3.7

79.0 82.0 86.0

7815 8880 10290

5500 6040 6725

0.1 0.1 0.1

3.8 4.0 4.2

92.0 98.0 100.0

12475 14850 17895

7745 8920 10305

Table 6.32 18 / 30 (36)kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED AROMOURED CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

50 70 95

Screening

Approx. weight of cable

Nominal diameter of steel wire

Nominal thickness of sheath

Approx. overall diameter

Copper

Aluminium

Nominal thickness of SC layer

Approx. thickness of Cu tape

mm

mm

mm

mm

mm

mm

kg/ km

kg/ km

8.3 9.9 11.7

8.0 8.0 8.0

0.6 0.6 0.6

0.1 0.1 0.1

3.15 3.15 3.15

3.4 3.6 3.7

79 83 88

9695 10920 12255

8780 9600 10425

120 150 185

13.2 14.6 16.4

8.0 8.0 8.0

0.6 0.6 0.6

0.1 0.1 0.1

3.15 3.15 3.15

3.8 3.9 4.0

91 94 99

13540 14880 16610

11225 12040 13045

240 300 400 500

18.8 21.0 23.8 26.7

8.0 8.0 8.0 8.0

0.6 0.6 0.6 0.6

0.1 0.1 0.1 0.1

3.15 3.15 3.15 3.15

4.2 4.4 4.6 4.8

104 111 118 124

19230 22130 25960 29820

14500 16195 18370 20250

39


76 / 132kV INSULATED SINGLE CORE CABLES

7

6

5

4

3

2

1

DESCRIPTION Circular stranded compacted copper or aluminium conductor, XLPE insulated, with copper wire screen and PE outer sheath. Complies with Tenaga Nasional Berhad (TNB) Specification. (Refer to table 6.33) CONSTRUCTION 1. Conductor Plain circular compacted copper or aluminium conductor to IEC 228 class 2 2. Conductor Screen Extruded semi-conductive thermo-setting compound 3. Insulation Extruded superclean XLPE (cross-linked polyethylene) 4. Insulation screen Extruded semi-conductive cross-linked polyethylene compound. It is firmly bonded to the insulation by virtue of the simultaneous cross linking of insulation The conductor screen, insulation and insulation screen are extruded by simultaneous triple extrusion process. 5. Metallic screen Concentric round uncoated copper wires applied helically and shall be capable of carrying an earth-fault current of 25kA for 3 seconds 6. Radial water barrier Laminated Aluminium Tape applied longitudinally or lead extruded 7. Outer sheath Extruded black PE containing an effective termite repellant APPLICATIONS For installationon trays, ducts of direct burial. NOTE : Cables complying with BS 6622 and customer’s specification are available upon request. Modifications which serve to improve our products will be implemented without notice.

40

* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.


CONSTRUCTION DATA Table 6.33 76 / 132kV SINGLE CORE XLPE INSULATED WITH COPPER WIRE SCREENED AND PE SHEATHED POWER CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

mm2

mm

300 / 300 400 / 300 500 / 300 630 / 300 800 / 300 1000 / 300

Screening Thickness of extruded SC layer

Nominal thickness of sheath

Approx. overall diameter

mm

mm

mm

20.9 23.6 26.5

20.0 20.0 20.0

1.3 1.3 1.3

30.2 35.6 39.0

20.0 20.0 20.0

1.3 1.3 1.3

Approx. weight of cable Copper

Aluminium

mm

kg/ km

kg/ km

4.0 4.0 4.0

89 92 94

10655 11700 12890

8730 9220 9760

4.0 4.0 4.0

99 102 107

14560 16480 18770

10515 11345 12280

41


Milliken Conductor

The conductor of this cable is achieved by using a shaped segmental conductor design. Our design consists of five stranded sector shape conductor segments with one central circular conductors separated by semi-conducting tape used to avoid “Skin Effect� for an improve current carrying capacity. The conductor also features water-sealed properties which prevent moisture ingress into and along the conductor for improve cable reliability and durability. CONSTRUCTION Conductor The conductor of this cable is achieved by using a shaped segmental conductor design. It consists of five stranded sector shape conductor segments with one central circular conductors. Conductor screen Extruded semi-conductive thermo-setting compound Insulation Extruded superclean cross-linked polyethylene (XLPE) Insulation screen Extruded semi-conductive cross-linked polyethylene compound. It is firmly bobded to the insulation by virtue of the simultaneous cross-linking of insulation Metallic screen Concentric round uncoated copper wires applied helically and shall be capable of carrying an earth-fault current of 25kA for 3 second. Radial water barrier Laminated aluminium tape applied longitudinally or lead extruded Outersheath Extruded black PE containing an effective termite repellent Graphite coating is provided to cater for on-site test.

42


CONSTRUCTION DATA 76 / 132 kV MILLIKEN CONDUCTOR XLPE INSULATED WITH COPPER WIRE SCREENED AND PE SHEATHED POWER CABLES Nominal crosssectional area of conductor

Nominal diameter of conductor

Nominal thickness of insulation

Nominal area of Cu. Wire Screening

Nominal thickness of sheath

Nominal overall diameter

Nominal weight of cable

mm2

mm

mm

mm2

mm

mm

kg/ km

1200 1600

43.4 50.0

20.0 20.0

300 300

4.0 4.0

110.8 117.0

21149.0 25510.6

Nominal crosssectional area of conductor

Conductor resistance at 20°C

Reactance

Capacitance

Current carrying capacity *

mm2

ohm / km

ohm / km

microF/km

kA

1200 1600

0.0151 0.0113

0.170 0.108

0.25 0.27

min. 1.23 min. 1.23

or 282 MVA or 282 MVA

* The current carrying capacity are based on the following condition

Maximum conductor temperature : 90° C Maximum ambient temperature : Air 37.2°C : Ground 30°C Ground thermal resistivity : 1.2ºC m/W Laying depth : 1.2m

43


TECHNICAL DATA CURRENT CARRYING CAPACITY The Current Carrying Capacity given in the following tables are based on the assumptions shown below:

(1) Max. Conductor Temperature............................................................................................................................... 90째C (2) Max. Ambient Temperature:

In Air...................................................................................................... 25째C In Ground............................................................................................... 15째C

(3) Ground Thermal Resistivity ........................................................................................................................1.2째C m/W (4) Laying Depth:

For Voltage up to 1kV............................................................................ 0.5m For Higher Voltages above 1kV............................................................. 0.8m

(5) Spacing Between Cables Laid:

In Flat Formation....................................... 2 times of cable overall diameter In Trefoil.......................................................................... with cable touching

(6) For other conditions, the rating factors included should be applied. TABLE 7.1 CURRENT RATINGS FOR 0.6 / 1kV ARMOURED XLPE CABLES Conductor size (mm2)

In Air Single-core Trefoil (A)

a

Flat (A)

In ground 2-core (A)

3- or 4core (AA)

Single-core

a

Trefoil (A)

Flat (A)

2-core (A)

3- or 4core (AA)

Copper Conductors 16 25 35 50 70

217 277

279 350

118 154 190 229 288

101 132 162 196 247

231 284

241 295

141 183 219 259 317

119 152 182 217 266

95 120 150 185 2400

340 395 454 522 615

425 488 543 610 700

355 411 469 541 639

305 353 404 465 549

340 386 431 485 558

350 395 485 482 545

381 433 185 547 632

319 363 406 458 529

300 400 500 630 800

700 800 905 1019 1107

775 834 910 986 1032

728 838 -

626 720 -

623 691 765 841 888

597 637 688 737 760

708 799 -

592 667 -

1000

1202

1098

-

-

942

797

-

-

Aluminium Conductors

44

16 25 35 50 70

162 208

209 264

90 114 141 169 213

76 100 122 147 186

177 218

185 227

108 138 165 196 240

91 116 139 165 203

95 120 150 185 240

255 295 340 392 464

322 370 417 473 550

263 -

229 266 305 352 417

260 296 331 374 433

270 306 339 380 435

288 -

244 278 311 353 409

300

532

619

-

478

486

483

-

461


Table 7.2 CURRENT RATINGS FOR 1.8 / 3kV ARMOURED XLPE CABLES Conductor size (mm2)

In Air Single-core Trefoil (A)

a

Flat (A)

In ground 3-core (A)

Single-core

a

Trefoil (A)

Flat (A)

3-core (A)

Copper Conductors 16 25 35 50 70

226 282

285 358

106 140 166 201 252

222 271

232 284

114 147 175 207 254

95 120 150 185 240

346 402 457 523 616

440 512 585 673 801

309 359 409 471 556

324 366 409 460 528

341 388 436 493 573

305 347 390 441 510

300 400 500 630 800

702 800 905 1019 1107

925 1081 1255 1461 1683

639 740 -

589 651 720 789 831

648 741 844 961 1085

576 653 -

1000

1202

1902

-

880

1203

-

Aluminium Conductors

a

16 25 35 50 70

169 212

214 268

80 105 125 151 190

170 208

178 217

87 113 134 158 194

95 120 150 185 240

259 302 343 394 465

328 382 434 501 595

233 270 307 355 420

248 282 315 355 410

260 297 332 377 438

233 266 298 338 392

300

533

686

484

460

495

444

Single-core cables with aluminium wire armour

45


Table 7.3 CURRENT RATINGS FOR 3.6 / 6kV TO 8.7 / 15kV ARMOURED XLPE CABLES Conductor size (mm2)

In Air Single-corea Trefoil (A)

Flat (A)

In ground 3-core (A)

Single-corea Trefoil (A)

Flat (A)

3-core (A)

Copper Conductors 25 b 35 b 50 b 70

235 285

295 370

145 175 220 270

220 270

230 280

140 170 210 255

95 120 150 185 240

360 415 470 540 640

455 520 600 690 820

330 375 430 490 570

320 360 410 455 520

335 380 430 485 560

300 340 380 430 490

300 400 500 630 800

740 840 940 1110 1270

940 1100 1280 1500 1740

650 740 -

580 650 710 760 810

640 730 830 940 1070

540 600

1000

1400

1960

-

860

1180

-

-

Aluminium Conductors 25 b 35 b 50 b 70

180 225

230 290

115 140 170 210

170 210

175 215

115 135 160 195

95 120 150 185 240

260 320 365 425 500

350 410 465 530 640

250 295 330 385 450

250 280 315 355 405

260 295 330 375 440

230 265 300 335 380

300 400 500 630 800

580 670 790 910 1052

730 860 1010 1190 1400

510 590 -

455 510 570 640 769

495 570 650 750 -

435 490 -

Copper wire screened, unarmoured b Not applicable to all voltages, see dimension tables for availability

a

46


Table 7.4 CURRENT RATINGS FOR 12 / 20kV TO 18 / 30Kv ARMOURED XLPE CABLES Conductor size (mm2)

In Air Single-corea Trefoil (A)

Flat (A)

In ground 3-core (A)

Single-corea Trefoil (A)

Flat (A)

3-core (A)

Copper Conductors 35 50 70 95 120

245 300 360 425

295 365 450 520

180 225 275 330 380

220 270 320 360

230 280 335 380

170 210 255 295 335

150 185 240 300 400

485 550 650 740 850

590 670 800 920 1070

430 490 570 650 740

410 460 530 600 690

430 485 560 640 730

375 420 480 530 590

500 630 800 1000

980 1130 1290 1430

1250 1450 1690 1910

-

760 850 930 1010

830 950 1070 1190

-

Aluminium Conductors

a

35 50 70 95 120

190 235 280 330

230 285 345 400

145 175 215 260 300

170 210 250 280

175 215 260 295

135 160 195 230 260

150 185 240 300 400

375 430 510 580 680

455 520 620 710 840

335 390 460 520 600

320 360 415 475 550

330 375 440 495 570

290 330 380 425 480

500 630 800 1000

790 920 1070 1210

980 1080 1360 1560

-

610 690 780 860

650 750 860 970

-

Copper wire screened, unarmoured

47


Table 7.5 CURRENT RATINGS FOR 132 kV SINGLE CORE UNARMOURED XLPE CABLES Conductor size (mm²)

In air Trefoil (A)

In ground Flat (A)

Trefoil (A)

Flat (A)

Copper Conductors 300 400

645 735

695 810

495 555

570 651

500 630

850 975

945 1090

615 675

745 845

800 1000

110 1220

1260 1420

750 800

950 1030

Aluminium Conductors

48

300 400

485 560

540 635

400 455

445 510

500 630

650 745

745 870

510 570

590 675

800 1000

845 970

1015 1155

630 680

770 850


RATING FACTORS FOR CABLES IN AIR TABLE 7.6 RATING FACTORS FOR AMBIENT AIR TEMPERATURE Ambient air temperature

20°C

25°C

30°C

35°C

40°C

45°C

50°C

Rating Factors

1.05

1.00

0.95

0.91

0.86

0.80

0.75

RATING FACTORS CABLES IN GROUND Table 7.7 RATING FACTORS FOR GROUND TEMPERATURE Ground Temperature

10°C

15°C

20°C

25°C

30°C

35°C

40°C

45°C

Rating Factors

1.03

1.00

0.97

0.93

0.89

0.85

0.81

0.77

Table 7.8 RATING FACTORS FOR THERMAL RESISTIVITY OF GROUND Thermal Resistivity (°Cm / W)

Conductor size (mm²)

0.8

0.9

1.0

1.5

2.0

2.5

3.0

1.16

1.11

1.07

0.91

0.81

0.73

0.67

Single - core cables Up to 150 From 185 to 400

1.17

1.12

1.07

0.90

0.80

0.72

0.66

From 500 to 1200

1.18

1.13

1.08

0.90

0.79

0.71

0.65

1.09

1.06

1.04

0.95

0.86

0.79

0.74

From 25 to 150

1.14

1.10

1.07

0.93

0.84

0.76

0.70

From 185 to 400

1.16

1.11

1.07

0.92

0.82

0.74

0.68

Multicore cables Up to 16

Table 7.9 RATING FACTORS FOR DEPTH OF LAYING Depth of laying (m)

0.6 / 1 kV cables

1.8 / 3 kV to 18 / 30 kV cables

Up to 50mm2

70 mm to 300mm2

above 300mm2

up to 300mm2

above 300mm2

0.5 0.6 0.8

1.00 0.99 0.97

1.00 0.98 0.96

1.00 0.97 0.94

1.00

1.00

1.0 1.3 1.5

0.95 0.94 0.93

0.94 0.92 0.91

0.92 0.90 0.89

0.98 0.96 0.95

0.97 0.95 0.94

1.8 2.0 2.5 3.0 or more

0.92 0.91 0.90 0.89

0.89 0.88 0.87 0.86

0.87 0.86 0.85 0.83

0.94 0.92 0.91 0.90

0.92 0.90 0.89 0.88

49


Table 7.10 GROUP RATING FACTORS FOR CIRCUITS OF THREE SINGLE CORE CABLES, IN TREFOIL AND LAID FLAT TOUCHING, HORIZONTAL FORMATION Cable Voltage (kV)

Number of circuits

Spacing of circuits (between centres of cable groups) Touching

0.15m*

0.3m

0.45m

0.6m

0.80 0.68 0.63 0.58 0.56

0.82 0.72 0.67 0.63 0.60

0.88 0.79 0.75 0.72 0.70

0.90 0.83 0.81 0.78 0.77

0.93 0.87 0.85 0.83 0.82

0.87 0.66 0.6 0.55 0.52

0.80 0.69 0.63 0.58 0.55

0.81 0.71 0.65 0.61 0.58

0.85 0.76 0.72 0.68 0.66

0.88 0.80 0.76 0.73 0.72

0.90 0.83 0.80 0.77 0.76

0.79 0.67 0.62 0.57 0.54

0.81 0.70 0.65 0.60 0.57

0.81 0.71 0.65 0.60 0.57

0.85 0.76 0.72 0.68 0.66

0.88 0.80 0.76 0.73 0.72

0.90 0.83 0.80 0.76 0.76

Trefoil

Laid Flat

0.6 / 1

2 3 4 5 6

0.77 0.65 0.59 0.55 0.52

1.8 / 3 to 12 / 20

2 3 4 5 6

18 / 30

2 3 4 5 6

* This spacing will not be possible for some of the larger diameter cables

Table 7.11 GROUP RATING FACTORS FOR MULTICORE CABLES IN HORIZONTAL FORMATION

50

Spacing of circuits (between centres of cable groups)

Cable Voltage (kV)

Number of Cables in group

Touching

0.15m

0.3m

0.45m

0.6m

0.6 / 1

2 3 4 5 6

0.81 0.70 0.63 0.58 0.55

0.87 0.78 0.74 0.70 0.67

0.91 0.84 0.81 0.78 0.76

0.93 0.87 0.86 0.83 0.82

0.94 0.90 0.89 0.87 0.86

1.8 / 3 to ]12 / 20

2 3 4 5 6

0.80 0.69 0.63 0.57 0.55

0.85 0.75 0.70 0.66 0.63

0.89 0.80 0.77 0.73 0.71

0.90 0.84 0.80 0.78 0.76

0.92 0.86 0.84 0.81 0.80

18 / 30

2 3 4 5 6

0.80 0.70 0.64 0.59 0.56

0.83 0.73 0.68 0.63 0.60

0.87 0.78 0.74 0.70 0.68

0.89 0.82 0.78 0.75 0.74

0.91 0.85 0.82 0.79 0.78


TABLE 7.12 METRIC CONDUCTOR SIZES AND RESISTANCE (20°C) FOR FIXED WIRING Maximum d.c. resistance Conductor size (mm2)

Maximum d.c. resistance

Plain copper (ohm / km)

Metal coated copper (ohm / km)

Aluminium* (ohm / km)

0.5 0.75 1 1.5 2.5

36.0 24.5 18.1 12.1 7.4

36.7 24.8 18.2 12.2 7.56

-

4 6 10 16 25

4.61 3.08 1.83 1.15 0.727

4.70 3.11 1.84 1.16 0.734

7.41 4.61 3.08 1.91 1.20

35 50 70 95 120

0.524 0.387 0.268 0.193 0.153

0.529 0.391 0.270 0.195 0.154

0.868 0.641 0.443 0.320 0.253

150 185 240 300 400

0.124 0.0991 0.0754 0.0601 0.0470

0.126 0.100 0.0762 0.0607 0.0475

0.206 0.164 0.125 0.100 0.0778

Conductor size (mm2)

Plain copper (ohm / km)

Metal coated copper (ohm / km)

Aluminium* (ohm / km)

500 630 800 1000 1200

0.0366 0.0283 0.0221 0.0176 0.0151

0.0369 0.0386 0.0224 0.0177 0.0151

0.0605 0.0469 0.0367 0.0291 0.0247

1400 + 1600 + 1800 ‡ 2000 ‡

0.0129 0.0113 0.0101 0.0090

0.0129 0.0113 0.0101 0.0090

0.0212 0.0186 0.0165 0.0149

1150 ‡ 1130 ‡

0.0156 0.0138

-

0.0258 0.0228

380 480 600 740 960 1200

-

-

0.0800 0.0633 0.0515 0.0410 0.0313 0.0250

* + ‡

includes metal-coared and metal clad non prefered sizes in IEC 228 sizes used for O.F. cables (not in IEC 228) solid sectoral conductors (not in IEC 228 but standard for British practice, BS 6360) Except where stated, the data is in accordance with IEC 228 and British Standards.

51


TABLE 7.13 ELECTRICAL CHARACTERISTICS 0.6 / 1Kv ARMOURED XLPE CABLES Single-core cables* Conductor Size (mm2)

52

A.C. resistance at 90째C

Multicore cables

Reactance (50Hz)

A.C. resistance at 90째C

Copper (ohm / km)

Aluminium (ohm / km)

Trefoil (ohm / km )

Flat # (ohm / km )

Copper (ohm / km)

Aluminium (ohm/km)

Reactance (50Hz) (ohm / km)

16

-

-

-

-

1.47

2.45

0.080

25

-

-

-

-

0.927

1.54

0.079

35

-

-

-

-

0.668

1.11

0.077

50

0.494

0.822

0.106

0.145

0.494

0.822

0.076

70

0.342

0.568

0.103

0.162

0.342

0.568

0.075

95

0.247

0.411

0.098

0.157

0.247

0.411

0.073

120

0.197

0.325

0.096

0.155

0.197

0.325

0.073

150

0.160

0.265

0.097

0.156

0.160

0.265

0.073

185

0.128

0.211

0.096

0.155

0.128

0.211

0.073

240

0.0989

0.162

0.092

0.151

0.0989

0.162

0.073

300

0.0802

0.130

0.090

0.149

0.0802

0.130

0.072

400

0.0640

-

0.090

0.148

0.0640

-

-

500

0.0515

-

0.089

0.146

0.0515

-

-

630

0.4200

-

0.086

0.144

0.0420

-

-

800

0.0363

-

0.086

0.144

0.0363

-

-

1000

0.0316

-

0.084

0.142

0.0316

-

-


Table 7.14 ELECTRICAL CHARACTERISTICS 1.8 / 3kV ARMOURED XLPE CABLES Single-core cables* Conductor size (mm2)

A.C. resistance at 90°C

3-core cables

Reactance (50Hz)

Copper (ohm / km)

Aluminium (ohm / km)

Trefoil (ohm / km )

Flat # (ohm / km )

16

-

-

-

-

25

-

-

-

35

-

-

50

0.494

70

0.342

95

A.C. resistance at 90°C Capacitance (µF / km )

Reactance (50Hz) (ohm / km)

Capacitance (µF / km )

Copper (ohm / km)

Aluminium (ohm/km)

-

1.47

2.42

0.104

0.18

-

-

0.927

1.54

0.095

0.22

-

-

-

0.668

1.11

0.092

0.25

0.822

0.116

0.172

0.31

0.494

0.822

0.088

0.27

0.568

0.110

0.165

0.36

0.342

0.568

0.084

0.31

0.247

0.411

0.104

0.160

0.42

0.247

0.411

0.081

0.35

120

0.195

0.325

0.104

0.159

0.45

0.195

0.325

0.079

0.38

150

0.160

0.265

0.100

0.156

0.49

0.160

0.265

0.077

0.42

185

0.128

0.211

0.098

0.154

0.54

0.128

0.211

0.076

0.46

240

0.098

0.162

0.094

0.150

0.63

0.098

0.162

0.074

0.51

300

0.080

0.130

0.091

0.147

0.70

0.080

0.130

0.073

0.57

400

0.064

-

0.090

0.147

0.77

-

-

-

-

500

0.051

-

0.089

0.145

0.80

-

-

-

-

630

0.042

-

0.086

0.143

0.84

-

-

-

-

* Aluminium wire armoured # Twice cable diameter spacing between centres

53


Table 7.15 ELECTRICAL CHARACTERISTICS 3.6 / 6kV ARMOURED XLPE CABLES Single-core cables* Conductor size (mm2)

A.C. resistance at 90°C Copper (ohm / km)

3-core cables

Reactance (50Hz)

Aluminium Trefoil (ohm / km) (ohm / km )

Flat # (ohm / km )

A.C. resistance at 90°C Capacitance (µF / km )

Copper (ohm / km)

Aluminium (ohm/km)

Reactance Capacitance (50Hz) (µF / km ) (ohm / km)

3.6 / 6 kV 16

-

-

-

-

-

1.47

2.42

0.104

0.18

25

-

-

-

-

-

0.927

1.54

0.095

0.22

35

-

-

-

-

-

0.668

1.11

0.092

0.25

50

0.494

0.822

0.116

0.172

0.31

0.494

0.822

0.088

0.27

70

0.342

0.568

0.110

0.165

0.36

0.342

0.568

0.084

0.31

95

0.247

0.411

0.104

0.160

0.42

0.247

0.411

0.081

0.35

120

0.195

0.325

0.104

0.159

0.45

0.195

0.325

0.079

0.38

150

0.160

0.265

0.100

0.156

0.49

0.160

0.265

0.077

0.42

185

0.128

0.211

0.098

0.154

0.54

0.128

0.211

0.076

0.46

240

0.098

0.162

0.094

0.150

0.63

0.098

0.162

0.074

0.51

300

0.080

0.130

0.091

0.147

0.70

0.080

0.130

0.073

0.57

400

0.064

-

0.090

0.147

0.77

-

-

-

-

500

0.051

-

0.089

0.145

0.80

-

-

-

-

630

0.042

-

0.086

0.143

0.84

-

-

-

-

6 / 10kV 16

-

-

-

-

-

1.47

2.45

0.134

0.21

25

-

-

-

-

-

0.927

1.54

0.124

0.24

35

-

-

-

-

-

0.668

1.11

0.116

0.26

50

0.493

0.821

0.127

0.185

0.27

0.493

0.822

0.111

0.28

70

0.342

0.569

0.120

0.177

0.31

0.342

0.568

0.106

0.32

95

0.247

0.410

0.114

0.171

0.34

0.247

0.410

0.100

0.36

120

0.196

0.325

0.109

0.166

0.37

0.196

0.325

0.097

0.39

150

0.159

0.265

0.106

0.163

0.40

0.159

0.265

0.094

0.42

185

0.128

0.211

0.103

0.160

0.44

0.128

0.211

0.092

0.46

240

0.098

0.162

0.099

0.156

0.49

0.0984

0.161

0.089

0.51

300

0.0790

0.130

0.096

0.153

0.52

0.0797

0.130

0.086

0.56

400

0.0632

0.102

0.093

0.150

0.59

0.0639

0.102

0.083

0.62

500

0.0510

0.0804

0.090

0.147

0.66

-

-

-

-

630

0.0416

0.0639

0.087

0.145

0.74

-

-

-

-

* Copper wire screened, unarmoured # Twice cable diameter spacing between centres

54


Table 7.16 ELECTRICAL CHARACTERISTICS 8.7 / 15kV AND 12 / 20kV ARMOURED XLPE CABLES Single-core cables* Conductor size (mm2)

A.C. resistance at 90°C Copper (ohm / km)

Aluminium (ohm / km)

3-core cables

Reactance (50Hz) Trefoil (ohm / km )

A.C. resistance at 90°C

Capacitance Flat # (ohm (µF / km ) / km )

Copper (ohm / km)

Reactance (50Hz) Aluminium (ohm / km) (ohm/km)

Capacitance (µF / km )

8.7 / 15kV 16

-

-

-

-

-

35

-

-

-

-

-

25

-

-

-

-

1.47

2.45

0.143

0.17

0.668

1.11

0.124

0.21

1.54

-

0.927 0.493

0.822

0.132 0.118

0.19 0.23

50

0.493

0.822

1.320

0.190

0.22

95

0.247

0.410

0.119

0.176

0.27

0.247

0.410

0.106

0.29

0.32

0.159

0.264

0.100

0.34

70

120 150

0.343

0.196 0.159

0.568

0.325 0.264

0.125

0.114 0.111

240

0.0979

0.161

0.211

0.107

300

0.0789

0.130

0.100

500

0.0507

0.802

0.093

185

400 630

0.128

0.0630 0.0414

0.102 0.0636

0.103

0.097 0.090

0.183

0.171 0.168 0.164

0.25

0.29 0.34

0.343

0.196 0.128

0.568

0.325 0.211

0.112

0.102 0.097 0.093

0.26

0.31 0.37 0.41

0.38

0.0982

0.161

0.156

0.42

0.0794

0.130

0.090

0.45

0.151

0.51

-

-

-

-

0.160

0.153 0.147

0.47 0.57

0.0636 -

0.102 -

0.087 -

0.50 -

12 / 20 kV 16

-

-

-

-

-

35

-

-

-

-

-

25

-

-

-

-

-

-

1.54

0.139

0.17

0.493

0.822

0.124

0.20

0.668

1.11

0.494

0.821

0.138

0.192

0.19

95

0.247

0.409

0.124

0.178

0.24

0.247

0.410

150

0.159

0.265

0.116

0.170

0.28

0.159

0.264

120 185

0.342

0.196 0.128

0.569

0.324 0.211

0.131

0.119 0.113

0.185

0.173 0.165 0.161

0.098

0.160

0.108

300

0.079

0.129

0.104

0.158

500

0.051

0.080

0.097

0.152

240

400 630

0.063 0.041

0.101 0.064

0.101 0.094

0.155 0.149

-

0.927

50 70

-

-

0.22

0.26 0.30

0.342

0.196 0.127

0.568

0.130 0.118

0.18 0.22

0.111

0.24

0.104

0.28

0.325

0.107

0.211

0.101 0.097

0.26 0.31 0.34

0.098

0.161

0.37

0.079

0.130

0.094

0.37

0.44

-

-

-

-

0.34

0.40 0.49

0.063 -

0.102 -

0.090 -

0.41 -

* Copper wire screened, unarmoured # Twice cable diameter spacing between centres

55


Table 7.17 ELECTRICAL CHARACTERISTICS 18 / 30kV ARMOURED XLPE CABLES Single-core cables* Conductor size (mm2)

A.C. resistance at 90°C

3-core cables

Reactance (50Hz)

A.C. resistance at 90°C

Capacitance Flat # (ohm (µF / km ) / km )

Copper (ohm / km)

Aluminium (ohm / km)

Trefoil (ohm / km )

70

0.342

0.568

0.143

0.194

95

0.247

0.411

0.134

120

0.196

0.324

150

0.160

185

0.128

240

Reactance Capacitance (50Hz) (µF / km ) (ohm / km)

Copper (ohm / km)

Aluminium (ohm/km)

0.16

0.342

0.568

0.135

0.16

0.189

0.18

0.247

0.411

0.127

0.18

0.129

0.184

0.19

0.196

0.325

0.122

0.19

0.264

0.125

0.178

0.21

0.159

0.265

0.118

0.21

0.211

0.121

0.174

0.22

0.128

0.211

0.114

0.22

0.0977

0.1600

0.116

0.169

0.250

0.0978

0.161

0.109

0.24

300

0.0785

0.1290

0.112

0.166

0.270

0.0788

0.130

0.105

0.26

400

0.0624

0.1010

0.107

0.162

0.290

-

-

-

-

500

0.0500

0.0797

0.104

0.158

0.320

-

-

-

-

630

0.0405

0.0630

0.099

0.155

0.350

-

-

-

-

800

0.0388

0.0509

0.095

0.151

0.400

-

-

-

-

TABLE 7.18 ELECTRICAL CHARACTERISTICS 132kV SINGLE CORE UNARMOURED XLPE CABLES Single-core cables* Conductor size (mm2)

A.C. resistance at 90°C

Capacitance (µF / km )

Copper (ohm / km)

Aluminium (ohm / km)

Trefoil (ohm / km )

Flat # (ohm / km )

300

0.078

0.129

0.147

0.198

0.130

400

0.060

0.099

0.140

0.190

0.140

500

0.049

0.078

0.132

0.182

0.160

630

0.039

0.062

0.127

0.173

0.170

800

0.032

0.050

0.121

0.165

0.195

1000

-

0.041

0.117

0.158

0.210

* Aluminium wire armoured # Twice cable diameter spacing between centres

56

Reactance (50Hz)


Table 7.19 TEMPERATURE CORRECTION FACTORS FOR CONDUCTOR RESISTANCE Temperature of conductor (째C)

Factor to convert to 20째C

Reciprocal to convert from 20째C

5

1.064

0.940

7

1.055

0.948

6 8 9

1.059 1.050 1.046

0.944 0.952 0.956

10

1.042

0.960

12

1.033

0.968

11

13 14

1.037 1.029 1.025

0.964 0.972 0.976

15

1.020

0.980

17

1.012

0.988

16 18 19

1.016 1.008 1.004

0.984 0.992 0.996

20

1.000

1.000

22

0.992

1.008

21 23 24

0.996 0.988 0.984

1.004 1.012 1.016

25

0.980

1.020

27

0.973

1.028

26 28 29

0.977 0.969 0.965

1.024 1.032 1.036

30

0.962

1.040

40

0.926

1.080

35 45 50

0.943 0.909 0.893

1.060 1.100 1.120

55

0.877

1.140

65

0.847

1.180

60 70 75

0.862 0.833 0.820

1.160 1.200 1.220

80

0.806

1.240

90

0.781

1.280

85

0.794

1.260

The manufacturer reserves the right to modify or vary the construction or specification of any of the products at their discretion and without notice. The information contained herein is in line with the appropriate standards and sound eletrical practice - it is believed to be reliable but as each application is unique, the manufacturer can accept no responsibility as to the suitability of any product for a particular use, or for any error of omissions, unintentional or otherwise.

57


CALCULATION OF SHORT-CIRCUIT/EARTH FAULT CURRENT CARRYING CAPACITY Adiabatic method as per IEC 60949, IEC 60986 & IEC 61443 1. Calculation of adiabatic short-circuit current

I = ε x IAD

IAD = K S Where, IAD = ε = S = θ i = θf = t = K = β =

58

θf + β 1n ( ) θi + β t

short-circuit current calculated on an adiabatic basis (A) factor to allow for heat loss into the adjacent components. For adiabatic calculations e = 1 nominal cross-sectional area (mm2) Initial temperature (°C) final temperature (°C) duration of short circuit (s) constant depending on the material of the current carrying component (As½/mm2), for Cu. 226 for Al. 148 for Steel 78 for Lead 42 reciprocal of temperature coefficient of resistance of the current carrying component at 0°C (K), for Cu. 234.5 for Al. 228 for Steel 202 for Lead 230


SHORT CIRCUIT CURRENT OF XLPE CABLES (COPPER CONDUCTOR) Curves are based on: * Cables at maximum operating temperature of 90ยบC at start of short-circuit. * Final conductor temperature of 250ยบC. 500

Conductor Sizes (mm2)

400 300

200 150

90

100 80 70 1000

Maximum Permissible Short Circuit Current (kA)

60 50

800

40

630 500

30

400 20

300 240 185

10 9 7

120

6

95

5 70

4

50

3

35 2 25

5.0

4.0

16 3.0

2.0

1.0

0.9

10 0.8

0.7

0.6

0.5

0.4

0.3

0.2

6 1

0.1

10 8

150

Duration of Short Circuit (second) for Copper Conductor

59


SHORT CIRCUIT CURRENT OF XLPE CABLES (ALUMINIUM CONDUCTOR) Curves are based on: * Cables at maximum operating temperature of 90ยบC at start of short-circuit. * Final conductor temperature of 250ยบC. 300

Conductor Sizes (mm2)

200 150

100 90 80 70 60

Maximum Permissible Short Circuit Current (kA)

50 1000

40

800 30 630 500

20

400 300 240

10 9 8 7

185 150

6 5

120

4

95

3

70

50

2

35 16

Duration of Short Circuit (second) for Aluminium Conductor

60

5.0

4.0

25 3.0

2.0

0.7 0.8 0.9 1.0

0.6

0.5

10 0.4

0.3

0.2

6 0.1

1


Leader Cable Industry Berhad (26936-P)

Lot 1385, Tikam Batu Industrial Estate 08600 Sungai Petani, Kedah, Malaysia Tel: 604-438 9988 Fax: 604-438 8497 www.leadercable.com.my Selangor Sales Office Unit 8.2, Level 8, Building A, Peremba Square Saujana Resort, Seksyen U2 40150 Shah Alam, Selangor, Malaysia. Tel: 603-7845 7788/6699 Fax: 603-7845 2258/8323


http://bizbagus.com/jensen/leader-cable/document/ProductCatalogue/Leader-XLPE