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
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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
16
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