leader xlpe
DESCRIPTION
CableTRANSCRIPT
XLPE INSULATED POWER CABLE
1
CONTENTINTRODUCTION ________________________________________________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
INTRODUCTIONLeader 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 star-point earthing.
H H H H H
H H H H H
C C C C C
A B
POLYETHYLENE
H H
HH
HH
H
HH
H
C
C
C
C
C
C
C
C
C D
XLPE
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 (90ºC), emergency (130ºC) or short circuit (250ºC) conditions.
Ease of InstallationXLPE 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 CABLESIn 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
VOLTAGE DESIGNATION;
Uo/U (Um)
The different tests employed are listed as such:
Routine TestsThese 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 TestsThese 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.
The rated voltages for cables are expressed in the form Uo/U (Um).UoUUm
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
10
0.6 / 1KV XLPE INSULATED UNAROMOURED CABLES Strandedcopper conductor
Shaped strandedaluminium conductor
XLPE insulation
XLPE insulation
Centre filler
Mylar tape
PVC sheath
PVC sheath
DESCRIPTIONSingle 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 & blackThree core - red, yellow and blueFour 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.
SheathPVC type ST2 to IEC 60502 colour black.
APPLICATIONSThese 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.
11
CONSTRUCTION DATA
Table 6.1 0.6 / 1kV SINGLE CORE XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES
Conductor Nominal thickness of insulation
Nominal thickness of
sheath
Approx. overall diameter
Approx. cable weight
Nominal cross-sectional area Shape Copper Aluminium
mm2 mm mm mm kg/ km kg/ km
1.52.54610
1625355070
95120150185240
3004005006308001000
r.m.r.m.r.m.r.m.r.m.
c.c c.c c.c c.c c.c
c.c c.c c.c c.c c.c
c.c c.c c.c c.c c.c r.m.
0.70.70.70.70.7
0.70.90.91.01.1
1.11.21.41.61.7
1.82.02.22.42.62.8
1.41.41.41.41.4
1.41.41.41.41.4
1.51.51.61.61.7
1.81.92.02.22.32.4
6.16.57.17.68.6
9.611.312.614.016.0
18.219.922.224.427.5
30.334.037.742.542.452.5
526483
107153
217324423554771
10421293158919712574
32014070509865618327
10426
-----
115160195240325
420515630780995
122015351910248529103870
Table 6.2 0.6 / 1kV TWO CORE XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES
Conductor Nominal thickness of insulation
Nominal thickness of
sheath
Approx. overall diameter
Approx. cable weight
Nominal cross-sectional area Shape Copper Aluminium
mm2 mm mm mm kg/ km kg/ km
1.52.54610
1625355070
95120150185240
300400
r.m.r.m.r.m.r.m.r.m.
c.c c.c
s.m.s.m.s.m.
s.m.s.m.s.m.s.m.s.m.
s.m.s.m.
0.70.70.70.70.7
0.70.90.91.01.1
1.11.21.41.61.7
1.82.0
1.81.81.81.81.8
1.81.81.81.81.8
1.92.02.22.32.5
2.62.9
10.110.912.013.115.0
17.217.018.721.024.0
26.929.933.437.141.7
45.851.6
134155200255365
49065585011101550
20902620323040205260
65408350
-----
285330395500660
8201030123515451900
23952940
12
Table 6.3 0.6 / 1kV THREE CORE XLPE INSULATED , PVC SHEATHED UNARMOURED CABLES
Conductor Nominal thickness of insulation
Nominal thickness of
sheath
Approx. overall diameter
Approx. cable weight
Nominal cross-sectional area Shape Copper Aluminium
mm2 mm mm mm kg/ km kg/ km
1.52.54610
1625355070
95120150185240
300400500
r.mr.mr.mr.mr.m
c.c.c.c.s.m.s.m.s.m.
s.m.s.m.s.m.s.m.s.m.
s.m.s.m.s.m.
0.70.70.70.70.7
0.70.90.91.01.1
1.11.21.41.61.7
1.82.02.2
1.81.81.81.81.8
1.81.81.81.81.9
2.02.12.32.42.6
2.83.03.3
10.511.412.613.815.8
17.319.421.424.127.9
31.434.939.143.548.8
53.760.765.7
149185245320470
650935
123516102285
30903875478059607810
97001240015500
-----
345450560695965
12601560194023953080
376548105935
Table 6.4 0.6 / 1kV FOUR CODEXLPE INSULATED, PVC SHEATHED UNARMOURED CABLES
Conductor Nominal thickness of insulation
Nominal thickness of
sheath
Approx. overall diameter
Approx. cable weight
Nominal cross-sectional area Shape Copper Aluminium
mm2 mm mm mm kg/ km kg/ km
1.52.54610
1625355070
95120150185240
300400500
r.mr.mr.mr.mr.m
c.cc.c
s.m.s.m.s.m.
s.m.s.m.s.m.s.m.s.m.
s.m.s.m.s.m.
0.70.70.70.70.7
0.70.90.91.01.1
1.11.21.41.61.7
1.82.02.0
1.81.81.81.81.8
1.81.81.81.81.9
2.02.12.32.42.6
2.83.03.3
10.511.412.613.815.8
17.319.421.424.127.9
31.434.939.143.548.8
53.760.765.7
149185245320470
650935
123516102285
30903875478059607810
97001240015500
-----
345450560695965
12601560194023953080
376548105935
13
Table 6.5 0.6 / 1kV FOUR CORE WITH REDUCED NEUTRAL CONDUCTOR, XLPE INSULATED, PVC SHEATHED UNARMOURED CABLES
Conductor
Nominal thickness of insulation
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape
Nominal cross-
sectional area
ShapeCopper Aluminium
Phase Neutral Phase Neutral
mm2 mm2 mm mm mm mm kg/ km kg/ km
101625
355070
95120150
185240300
400500
r.mc.cc.c
s.ms.ms.m
s.ms.ms.m
s.ms.ms.m
s.ms.m
61016
162535
507070
95120150
185240
r.mr.mr.m
r.mr.mr.m
r.mr.mr.m
r.mr.mr.m
r.mr.m
0.70.70.9
0.91.01.1
1.11.21.4
1.61.71.8
2.02.2
0.70.70.7
0.70.90.9
1.01.11.1
1.11.21.4
1.61.7
1.81.81.8
1.81.81.9
2.12.22.3
2.52.72.9
3.13.4
17.318.921.7
24.127.731.7
35.839.844.4
49.655.861.7
68.879.0
5607801165
151519452840
365048505660
70459115
11300
1458018435
--
580
7408701300
139017802390
288536304440
58257325
Note : r.m. - circular stranded conductor c.c - compacted circular stranded conductor s.m. - second stranded conductor, circular conductors can be produced on request
14
Sectoral copper conductor
XLPE insulation
PVC bedding
Round steelwire armour
PVC sheath
Strandedcopper conductor
XLPE insulation
Centre filler
Double steel tapes
PVC sheath
DESCRIPTIONSingle 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 indentificationSingle core - red Two core - red & black Three core - red, yellow and blueFour 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.
SheathPVC type ST2 to IEC 60502 colour black.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
0.6 / 1KV XLPE INSULATED AROMOURED CABLES
15
CONSTRUCTION DATA
Table 6.6 0.6 / 1kV SINGLE CORE, XLPE INSULATED,PVC SHEATHED ARMOURED CABLES
ConductorNominal
thickness of insulation
Nominal diameter of aluminium
wire
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional areaShape Copper Aluminium
mm² mm mm mm mm kg/ km kg/ km
507095120
150185240300
4005006308001000
c.cc.cc.cc.c
c.cc.cc.cc.c
c.cc.cc.cc.cc.c
1.01.11.11.2
1.41.61.71.8
2.02.22.42.62.8
1.251.251.251.60
1.601.601.601.60
2.002.002.002.502.50
1.81.81.81.8
1.81.81.91.9
2.12.22.32.52.7
20.021.021.825.8
27.730.032.735.1
40.043.548.253.962.5
760985
12601645
1970238530203665
474058307390954011860
460555660890
1040122014751725
22602705334543756350
Table 6.7 0.6/ 1 kV TWO CORE, XLPE INSULATEDPVC SHEATHED ARMOURED CABLES
ConductorNominal
thickness of insulation
Nominal diameter of steel wire
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape Copper Aluminium
mm² mm mm mm mm kg/ km kg/ km
1.52.546
10162535
507095120
150185240300400
r.mr.mr.mr.m
r.mc.cc.cs.m
s.ms.ms.ms.m
s.ms.ms.ms.ms.m
0.70.70.70.7
0.70.70.90.9
1.01.11.11.2
1.41.61.71.82.0
0.80.80.80.8
1.251.251.61.6
1.61.62.02.0
2.02.52.52.52.5
1.81.81.81.8
1.81.81.81.7
1.82.02.12.2
2.32.52.72.83.1
14.014.916.017.1
19.020.323.224.9
27.130.534.237.5
40.945.950.854.861.2
350400475550
700860
12801525
1870245033104010
4740612076509115
11335
----
-655955
1075
1260157020902470
28453745450051606275
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 6.8 0.6 / 1kV THREE CORE XLPE INSULATED ,PVC SHEATHED ARMOURED CABLES
ConductorNominal
thickness of insulation
Nominal diameter of aluminium
wire
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape Copper Aluminium
mm² mm mm mm mm kg/ km kg/ km
1.52.54610
1625355070
95120150185240
300400500
r.mr.mr.mr.mr.m
c.c.c.c.s.ms.ms.m
s.ms.ms.ms.ms.m
s.ms.ms.m
0.70.70.70.70.7
0.70.90.91.01.1
1.11.21.41.61.7
1.82.02.2
0.800.800.800.801.25
1.251.601.601.602.00
2.002.002.502.502.50
2.502.503.15
1.81.81.81.81.8
1.81.81.81.82.0
2.22.32.52.62.8
3.03.23.5
14.515.416.617.820.5
22.025.727.730.535.1
39.342.747.952.758.1
63.770.380.1
385450535640950
11801650201525203535
4565551069908120
10500
126951554020385
-----
8401165134016052215
27353200415045555770
67607950
10820
Table 6.9 0.6 / 1kV FOUR CORE XLPE INSULATED, PVC SHEATHED ARMOURED CABLES
ConductorNominal
thickness of insulation
Nominal diameter of aluminium
wire
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape Copper Aluminium
mm² mm mm mm mm kg/ km kg/ km
1.52.54610
1625355070
95120150185240
300400500
r.mr.mr.mr.mr.m
c.c.c.c.s.m.s.m.s.m.
s.m.s.m.s.m.s.m.s.m.
s.m.s.m.s.m.
0.70.70.70.70.7
0.70.90.91.01.1
1.11.21.41.61.7
1.82.02.2
0.80.80.81.31.3
1.61.61.62.02.0
2.02.52.52.52.5
2.53.153.15
1.81.81.81.81.8
1.81.81.92.02.2
2.32.52.62.83.0
3.23.53.8
15.316.317.619.722.0
25.228.030.533.739.5
43.749.153.758.965.5
71.380.990.8
4355106158501100
15302030252531604555
579574858925
1083013720
165852158026150
-----
11201380162519452795
33554400513560807415
86751146013395
Note : r.m. - circular stranded conductor c.c - compacted circular stranded conductor s.m. - second stranded conductor, circular conductors can be produced on request
17
Table 6.10 0.6 / 1 kV FOUR CABLE WITH REDUCED NEUTRAL OCNDUCTOR, XLPE INSULATED, PVC SHEATHED ARMOURED CABLES
Conductor
Nominal thickness of insulation
Nominal diameter of steel wire
Nominal thickness of sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape
Nominal cross-
sectional area
ShapeCopper Aluminium
Phase Neutral Phase Neutral Neutral
mm2 mm mm mm mm mm kg/ km kg/ km
162535
507095
120150185
240300400500
c.c.c.c.s.m.
s.m.s.m.s.m.
s.m.s.m.s.m.
s.m.s.m.s.m.s.m.
101616
253550
707095
120150185240
r.m.r.m.r.m.
r.m.r.m.r.m.
r.m.r.m.r.m.
r.m.r.m.r.m.r.m.
0.70.90.9
1.01.11.1
1.21.41.6
1.71.82.02.2
0.70.70.7
0.90.91.0
1.11.11.1
1.21.41.61.7
1.251.61.6
1.62.02.0
2.02.52.5
2.52.52.5
3.15
1.81.81.8
1.92.12.2
2.32.52.7
2.93.03.33.6
25.228.030.5
33.739.543.7
49.153.758.9
65.571.380.990.8
127518802415
296043305415
715076759930
12390148451970023880
-12951640
188827903290
425544055770
690579851094512690
18
Stranded aluminium conductor
XLPE insulation
PVC bedding
Round hard drawn aluminium wire armour
PVC outersheath
DESCRIPTIONSingle 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 - redThree 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.
SheathPVC type ST2 to IEC 60502 colour black.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
1.8 / 3KV XLPE INSULATED ARMOURED CABLES
19
CONSTRUCTION DATA
Table 6.11 1.8 / 3.0 (3.6)kV SINGLE COREXLPE INSULATED, PVC SHEATHED ARMOURED CABLES
ConductorNominal
thickness of insulation
Nominal diameter of aluminium
wire
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape Copper Aluminium
mm² mm mm mm mm kg/ km kg/ km
16253550
7095120150
185240300400
5006308001000
c.c.c.c.c.c.c.c.
c.c.c.c.c.c.c.c.
c.c.c.c.c.c.c.c.
c.c.c.c.c.c.r.m.
2.02.02.02.0
2.02.02.02.0
2.02.02.02.0
2.22.42.62.8
0.801.251.251.25
1.251.601.601.60
1.601.601.602.00
2.002.002.502.50
1.81.81.81.8
1.81.81.81.8
1.81.92.02.1
2.22.32.52.7
17.019.019.521.2
22.726.027.529.0
31.033.536.040.0
43.548.253.962.5
450610680830
1060153017252030
2415306037504750
58357390954011860
350450460532
6309309701100
1250151518102270
2710334543756350
Table 6.11 1.8 / 3.0 (3.6)kV THREE COREXLPE INSULATED, PVC SHEATHED ARMOURED CABLES
ConductorNominal
thickness of insulation
Nominal diameter of aluminium
wire
Nominal thickness of
sheath
Approx. overall
diameter
Approx. cable weight
Nominal cross-
sectional area
Shape Copper Aluminium
mm² mm mm mm mm kg/ km kg/ km
16253550
7095120150
185240300400500
c.c.c.c.c.c.c.c.
c.c.c.c.c.c.c.c.
c.c.c.c.c.c.c.c.c.c.
2.02.02.02.0
2.02.02.02.0
2.02.02.02.02.2
1.61.61.62.0
2.02.02.52.5
2.52.52.52.5
3.15
1.81.91.92.1
2.22.32.42.5
2.72.83.03.23.6
30.032.535.539.5
43.047.052.055.5
60.065.070.577.087
1250213026803520
4300530067707800
931011500138001690021970
945164520052605
2980347044554960
5745677078659310
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
20
6 5 4 3 2 1
DESCRIPTIONCircular 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 ScreenExtruded semiconductive compound
3. Insulation XLPE (cross-linked polyethylene) rated 90°C
Insulation screen4. Non-metallic partExtruded layer of semiconductive material.
Insulation screen5. Metallic part Copper wire or copper tape screen
6. Outer sheathPVC type ST2 to IEC 60502 colour black
APPLICATIONSFor 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
3.6 / 6KV INSULAED SINGLE CORE CABLES
21
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 cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6308001000
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
30.534.337.6
2.52.52.52.5
2.52.52.52.5
2.62.83.03.2
3.23.23.2
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
0.10.10.1
1.51.51.61.6
1.71.71.81.8
1.92.02.12.2
2.32.52.6
18.019.021.022.0
24.026.027.029.0
32.035.039.043.0
48.050.251.4
550655810
1040
1335159518902275
2875355544105535
69958750
-
395435515610
7408409651110
1330162019302410
295036204265
Table 6.13 3.6/ 6.0 (7.2)kV SINGLE CORE XLPE INSULATED WITH COPPER WIRE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor/ screen
Nominal diameter of conductor
Nominal thickness of insulation
Screening
Approx. overall
diameter
Approx. weight of cable
Thickness of extruded SC
layer
Nominal thickness of
sheathCopper Aluminium
mm2 mm mm mm mm kg/ km kg/ km
25 / 1635 / 1650 / 1670 / 16
95 / 16120 / 16150 / 25185 / 25
240 / 25300 / 25400 / 35500 / 35
630 / 35800 / 501000 / 50
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
30.534.337.6
2.52.52.52.5
2.52.52.52.5
2.62.83.03.2
3.23.23.2
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.60.6
1.51.61.61.6
1.71.71.81.8
1.92.02.12.2
2.32.52.6
20212426
28303133
36394246
505458
675800980
1225
1505178521502550
3170384048555910
73659210
-
515580680795
905103012201385
1625190023752785
332040804725
22
8 67 5 4 3 2 1
DESCRIPTIONStranded 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper tapes 0.10mm thickness
6. BeddingTaped bedding for unarmoured cables, extruded PVC bedding for armoured cables.
7. ArmourGalvanized steel wires/ tapes applied helically over the PVC bedding.
8. Outer sheathPVC types ST2 to IEC 60502 colour black.
Colour for core identificationRed, yellow and blue narrow tapes applied between non metallic and metallic part of insulation screen.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
3.6 / 6KV XLPE INSULATED THREE CORE CABLES
23
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 cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
2.52.52.52.5
2.52.52.52.5
2.62.83.03.2
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
2.12.12.22.3
2.52.62.72.8
3.03.23.43.6
35.037.040.044.0
48.052.055.059.0
65.072.079.087.0
1540190023903130
4060491058207060
8990111001400017300
1060123014801810
2230260029803500
4260517064107735
Table 6.16 3.6 / 6 (7.2) kV THREE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED ARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
2.52.52.52.5
2.52.52.52.5
2.62.83.03.2
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
2.02.52.52.5
2.52.52.52.5
2.53.153.153.15
2.32.42.52.6
2.72.93.03.1
3.33.53.84.0
45485155
59636670
768593
101
3225398043354920
5545618068257560
8700112001299015190
24
6 5 4 3 2 1
DESCRIPTIONCircular stranded compacted copper or aluminium conductor, XLPE insulated, with copper tape screen and PVCouter 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper wire of copper tape screen
6. Outer SheathPVC type ST2 to IEC 60502 colour black.
APPLICATIONSFor 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
6 / 10KV XLPE INSULATED SINGLE CORE CABLES
25
CONSTRUCTION DATA
Table 6.17 6 / 10 (12) kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6308001000
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
30.534.337.6
3.43.43.43.4
3.43.43.43.4
3.43.43.43.4
3.43.43.4
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
0.10.10.1
1.61.61.61.7
1.71.81.81.9
2.02.02.22.2
2.42.52.6
20.021.023.024.0
26.028.029.031.0
34.037.040.043.0
48.051.054.4
6157458901130
1425169521502520
3015363045105565
70508815
-
460525590700
83094012251355
1470169020302440
300536854320
Table 6.18 6 / 10 (12) kV SINGLE CORE XLPE INSULATED WITH COPPER WIRE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Thickness of extruded SC layer Copper Aluminium
mm2 mm mm mm mm mm kg/ km kg/ km
25 / 1635 / 1650 / 1670 / 16
95 / 16120 / 16150 / 25185 / 25
240 / 25300 / 25400 / 35500 / 35
630 / 35800 / 501000 / 50
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
30.534.337.6
3.43.43.43.4
3.43.43.43.4
3.43.43.43.4
3.43.43.4
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.60.6
1.61.61.71.7
1.81.81.91.9
2.02.12.22.3
2.42.52.7
22232628
30323335
38404346
505559
745860
10651300
1600187022552640
3280393049005940
74259280
-
590640765870
1000111513251475
1735199024202815
338041504820
26
8 67 5 4 3 2 1
DESCRIPTIONStranded 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper tapes 0.10 mm thickness
6. BeddingTaped bedding or extruded PVC bedding
7. ArmourGalvanized steel wires/ tapes applied helically over the PVC bedding.
8. Outer sheathPVC types ST2 to IEC 60502 colour black.
Colour for core identificationRed, yellow and blue narrow tapes applied between non metallic and metallic part of insulation screen.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
6 / 10KV XLPE INSULATED THREE CORE CABLES
27
CONSTRUCTION DATA
Table 6.19 6 / 10(12)kV THREE CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
3.43.43.43.4
3.43.43.43.4
3.43.43.43.4
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
2.22.32.42.5
2.62.72.82.9
3.13.33.53.7
39.042.045.049.0
53.056.060.064.0
69.075.081.088.0
1830222027303500
4410531062507510
9440115001430017600
1350155018202180
2580300034103950
4710557067108030
Table 6.20 6 / 10(12)kV THREE CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED ARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness
of insulation
Screening Nominal diameter of steel
wire
Nominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of Cu tape
Copper Aluminium
mm2 mm mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
3.43.43.43.4
3.43.43.43.4
3.43.43.43.4
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
2.52.52.52.5
2.52.52.52.5
3.153.153.153.15
2.52.62.72.8
2.93.03.13.3
3.53.73.94.1
52535660
64677175
828998
102
4790520056306680
78709020
1073511750
15060177052172525025
4300452547152360
6040670578908185
10330117701413515460
28
6 5 4 3 2 1
DESCRIPTIONCircular 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper wire or copper tape screen
6. Outer sheathPVC type ST2 to IEC 60502 colour black
APPLICATIONSFor 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
8.7 / 15(17.5)KV XLPE INSULATED SINGLE CORE CABLES
29
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 cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness
of insulation
ScreeningNominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
35507095
120150185240
300400500630
8001000
7.18.39.911.7
13.214.616.418.8
21.023.826.730.5
34.337.6
4.54.54.54.5
4.54.54.54.5
4.54.54.54.5
4.54.5
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
0.10.1
1.71.71.81.8
1.91.92.02.1
2.12.22.32.4
2.62.7
24.025.027.028.0
30.032.034.037.0
39.042.045.051.0
53.457.2
845990
12401535
1825211025453165
3790465557557295
9020-
625690810940
1070118013801620
1850217526303250
38904560
Table 6.22 8.7 / 15(17.5)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Thickness of extruded SC layer Copper Aluminium
mm2 mm mm mm mm mm kg/ km kg/ km
35 / 1650 / 1670 / 1695 / 16
120 / 16150 / 25185 / 25240 / 25
300 / 25400 / 35500 / 35630 / 35
800 / 501000 / 50
7.18.39.911.7
13.214.616.418.8
21.023.826.730.5
34.337.6
4.54.54.54.5
4.54.54.54.5
4.54.54.54.5
4.54.5
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.6
1.71.71.81.8
1.91.92.02.1
2.12.32.42.5
2.62.7
27293133
34363840
43464953
5761
955115014051700
1985238027803420
4075506561107565
9480-
7358509751100
1230145016151875
2135258529853520
43505015
30
8 67 5 4 3 2 1
DESCRIPTIONStranded 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper tapes 0.10 mm thickness
6. BeddingTaped bedding or extruded PVC bedding.
7. ArmourGalvanized steel wires/tapes applied helically over the PVC bedding.
8. Outer sheathPVC types ST2 to IEC 60502 colour black.
Colour for core identificationRed, yellow and blue narrow tapes applied between non metallic and metallic part of insulation screen.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
8.7 / 15KV XLPE INSULATED THREE CORE CABLES
31
CONSTRUCTION DATA
Table 6.23 8.7 / 15(17.5)kV THREE-CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
4.54.54.54.5
4.54.54.54.5
4.54.54.54.5
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
2.42.52.62.7
2.82.93.03.1
3.33.53.73.9
45.047.051.054.0
59.062.065.070.0
75.081.087.094.0
2180256031003910
4890579067408020
10100121001490018300
1700189021902590
3060348039004460
5370617073108730
Table 6.24 8.7 / 15(17.5)kV THREE-CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED ARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness
of insulation
ScreeningNominal diameter of steel
wire
Nominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness
of Cu tape
Copper Aluminium
mm2 mm mm mm mm mm mm mm kg/ km kg/ km
25355070
95120150185
240300400500
6.07.18.39.9
11.713.214.616.4
18.821.023.826.7
4.54.54.54.5
4.54.54.54.5
4.54.54.54.5
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
2.52.52.52.5
2.52.5
3.153.15
3.153.153.153.15
2.62.72.93.0
3.13.23.43.5
3.63.84.14.3
55586165
69737882
8894
104108
5035562063407410
866097801188013510
16010187002281026100
4550494554256090
6830746590409945
11280127651522016530
32
12 / 20KV XLPE INSULATED SINGLE CORE CABLES
6 5 4 3 2 1
DESCRIPTIONCircular 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper wire or copper tape screen
6. Outer SheathPVC type ST2 to IEC 60502 colour black
APPLICATIONSFor 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
33
CONSTRUCTION DATA
Table 6.25 12 / 20(24)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
35507095
120150185240
300400500630
8001000
7.18.39.911.7
13.214.616.418.8
21.023.826.730.5
34.337.6
5.55.55.55.5
5.55.55.55.5
5.55.55.55.5
5.55.5
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.10.1
0.10.1
1.71.81.81.9
1.92.02.02.1
2.22.32.42.5
2.62.8
26.027.029.031.0
32.034.036.038.0
41.044.048.053.0
55.459.4
935109013401655
1925227026653280
3915477559307480
9195-
7157909101055
1170134015001735
1975229528053435
40654770
Table 6.26 12 / 20(24)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor/ screen
Nominal diameter of conductor
Nominal thickness of insulation
Screening
Nominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Thickness of extruded SC layer Copper Aluminium
mm2 mm mm mm mm mm kg/ km kg/ km
35 / 1650 / 1670 / 1695 / 16
120 / 16150 / 25185 / 25240 / 25
300 / 25400 / 35500 / 35630 / 35
800 / 501000 / 50
7.18.39.911.7
13.214.616.418.8
21.023.826.730.5
34.337.6
5.55.55.55.5
5.55.55.55.5
5.55.55.55.5
5.55.5
0.60.60.60.6
0.60.60.60.6
0.60.60.60.6
0.60.6
1.81.81.91.9
2.02.02.12.1
2.22.32.42.5
2.72.8
30313335
36384043
45485155
5963
1100125015101810
2105249029053560
4230522562857765
9650-
880950
10801210
1350156017402015
2290274531603720
45205225
34
12 / 20KV XLPE INSULATED THREE CORE CABLES
8 67 5 4 3 2 1
DESCRIPTIONCircular 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper tapes 0.10 mm thickness
6. BeddingTaped bedding or extruded PVC bedding.
7. ArmourGalvanized steel wires/tapes applied helically over the PVC bedding.
8. Outer sheathPVC types ST2 to IEC 60502 colour black.
Colour for core identificationRed, yellow and blue narrow tapes applied between non-metallic and meatallic part of insulation screen.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
35
CONSTRUCTION DATA
Table 6.27 12 / 20(24)kV THREE CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED UNAROMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of Cu tape
Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
35507095
120150185240
300400500
7.18.39.911.7
13.214.616.418.8
21.023.826.7
5.55.55.55.5
5.55.55.55.5
5.55.55.5
0.60.60.60.6
0.60.60.60.6
0.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.1
2.62.72.83.0
3.13.23.33.5
3.63.94.1
53.056.060.064.0
68.071.075.080.0
87.093.0
101.0
3165364045455565
65607570891511050
132951623519200
2490272532253735
4245472553506320
736086459635
Table 6.28 12 / 20(24)kV THREE CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED AROMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness
of insulation
Screening Nominal diameter of steel
wire
Nominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of Cu tape
Copper Aluminium
mm2 mm mm mm mm mm mm mm kg/ km kg/ km
35507095
120150185240
300400500
7.18.39.911.7
13.214.616.418.8
21.023.826.7
5.55.55.55.5
5.55.55.55.5
5.55.55.5
0.60.60.60.6
0.60.60.60.6
0.60.60.6
0.10.10.10.1
0.10.10.10.1
0.10.10.1
2.52.52.52.5
2.53.153.153.15
3.153.153.15
2.93.03.13.2
3.43.53.63.8
4.04.24.4
63667074
79838793
99105112
6275700080509355
11400126351434516920
196552306027060
5600608567307525
909097901078012190
137201547017490
36
18 / 30KV XLPE INSULATED SINGLRE CORE CABLES
6 5 4 3 2 1
DESCRIPTIONCircular 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper wire or copper tape screen
6. Outer SheathPVC type ST2 to IEC 60502 colour black
APPLICATIONSFor 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
37
CONSTRUCTION DATA
Table 6.29 18 / 30(36)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of
Cu tape Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
507095
120150185
240300400
5006308001000
8.39.911.7
13.214.616.4
18.821.023.8
26.730.534.337.6
8.08.08.0
8.08.08.0
8.08.08.0
8.08.08.08.0
0.60.60.6
0.60.60.6
0.60.60.6
0.60.60.60.6
0.10.10.1
0.10.10.1
0.10.10.1
0.10.10.10.1
2.02.02.1
2.12.22.2
2.32.42.5
2.62.72.83.0
33.035.036.0
38.040.041.0
44.047.050.0
53.059.060.865.0
138016501995
228526203035
367045305300
645580059710
-
108012301395
153016901870
212525902820
3330396045805335
Table 6.30 18 / 30(36)kV SINGLE CORE XLPE INSULATED WITH COPPER TAPE SCREENED AND PVC SHEATHED UNARMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness
of insulation
ScreeningNominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Thickness of extruded SC layer Copper Aluminium
mm2 mm mm mm mm mm kg/ km kg/ km
50 / 1670 / 1695 / 16
120 / 16150 / 25185 / 25
240 / 25300 / 25400 / 35
500 / 35630 / 35800 / 501000 / 50
8.39.911.7
13.214.616.4
18.821.023.8
26.730.534.337.6
8.08.08.0
8.08.08.0
8.08.08.0
8.08.08.08.0
0.60.60.6
0.60.60.6
0.60.60.6
0.60.60.60.6
2.02.02.1
2.12.22.2
2.32.42.5
2.62.72.93.0
363840
414345
485053
57606569
153017802120
241028203255
391046205645
67308210
10195-
123013501520
165518902070
236526903165
3605416550655785
38
18 / 30KV XLPE INSULATED THREE CORE CABLES
8 67 5 4 3 2 1
DESCRIPTIONStranded 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 partExtruded layer of semiconductive material
Insulation screen5. Metallic part Copper tapes 0.10 mm thickness
6. BeddingTaped bedding or extruded PVC bedding.
7. ArmourGalvanized steel wires/tapes applied helically over the PVC bedding.
8. Outer sheathPVC types ST2 to IEC 60502 colour black.
Colour for core identificationRed, yellow and blue narrow tapes applied between non-metallic and meatallic part of insulation screen.
APPLICATIONSThese 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
39
CONSTRUCTION DATA
Table 6.31 18 / 30(36)kV THREE CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED UNAROMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of Cu tape
Copper Aluminium
mm2 mm mm mm mm mm mm kg/ km kg/ km
507095
120150185
240300400
8.99.911.7
13.214.616.4
18.821.023.8
8.08.08.0
8.08.08.0
8.08.08.0
0.60.60.6
0.60.60.6
0.60.60.6
0.10.10.1
0.10.10.1
0.10.10.1
3.13.23.3
3.53.63.7
3.84.04.2
67.071.075.0
79.082.086.0
92.098.0
100.0
478556906775
78158880
10290
124751485017895
387043704945
550060406725
7745892010305
Table 6.32 18 / 30 (36)kV THREE CORE XLPE INSULATED WITHCOPPER TAPE SCREENED AND PVC SHEATHED AROMOURED CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness
of insulation
Screening Nominal diameter of steel
wire
Nominal thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Nominal thickness of
SC layer
Approx. thickness of Cu tape
Copper Aluminium
mm2 mm mm mm mm mm mm mm kg/ km kg/ km
507095
120150185
240300400500
8.39.911.7
13.214.616.4
18.821.023.826.7
8.08.08.0
8.08.08.0
8.08.08.08.0
0.60.60.6
0.60.60.6
0.60.60.60.6
0.10.10.1
0.10.10.1
0.10.10.10.1
3.153.153.15
3.153.153.15
3.153.153.153.15
3.43.63.7
3.83.94.0
4.24.44.64.8
798388
919499
104111118124
96951092012255
135401488016610
19230221302596029820
8780960010425
112251204013045
14500161951837020250
40
76 / 132KV INSULATED SINGLE CORE CABLES
7 6 5 4 3 2 1
DESCRIPTIONCircular 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 screenConcentric round uncoated copper wires applied helically and shall be capable of carrying an earth-fault current of 25kA for 3 seconds
6. Radial water barrierLaminated Aluminium Tape applied longitudinally or lead extruded
7. Outer sheath Extruded black PE containing an effective termite repellant
APPLICATIONSFor 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.
* Metallic sheath (Lead alloy ‘E’) and/or moisture barrier sheath (Laminated Aluminium foil) available upon request.
41
CONSTRUCTION DATA
Table 6.33 76 / 132kV SINGLE CORE XLPE INSULATED WITHCOPPER WIRE SCREENED AND PE SHEATHED POWER CABLES
Nominal cross-
sectional area of
conductor
Nominal diameter of conductor
Nominal thickness of insulation
ScreeningNominal
thickness of sheath
Approx. overall
diameter
Approx. weight of cable
Thickness of extruded SC layer Copper Aluminium
mm2 mm mm mm mm mm kg/ km kg/ km
300 / 300400 / 300500 / 300
630 / 300800 / 3001000 / 300
20.923.626.5
30.235.639.0
20.020.020.0
20.020.020.0
1.31.31.3
1.31.31.3
4.04.04.0
4.04.04.0
899294
99102107
106551170012890
145601648018770
873092209760
105151134512280
42
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 screenExtruded semi-conductive thermo-setting compound
Insulation Extruded superclean cross-linked polyethylene (XLPE)
Insulation screenExtruded semi-conductive cross-linked polyethylene compound. It is firmly bobded to the insulation by virtue of the simultaneous cross-linking of insulation
Metallic screenConcentric round uncoated copper wires applied helically and shall be capable of carrying an earth-fault current of 25kA for 3 second.
Radial water barrierLaminated aluminium tape applied longitudinally or lead extruded
OutersheathExtruded black PE containing an effective termite repellentGraphite coating is provided to cater for on-site test.
43
CONSTRUCTION DATA
76 / 132 kV MILLIKEN CONDUCTOR XLPE INSULATED WITH COPPER WIRE SCREENEDAND PE SHEATHED POWER CABLES
Nominal cross-sectional 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
12001600
43.450.0
20.020.0
300300
4.04.0
110.8117.0
21149.025510.6
Nominal cross-sectional area of
conductor
Conductor resistance at 20°C Reactance Capacitance Current carrying capacity *
mm2 ohm / km ohm / km microF/km kA
12001600
0.01510.0113
0.1700.108
0.250.27
min. 1.23min. 1.23
or 282 MVAor 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°CGround thermal resistivity : 1.2ºC m/W Laying depth : 1.2m
44
TECHNICAL DATACURRENT CARRYING CAPACITY
The Current Carrying Capacity given in the following tables are based on the assumptions shown below:
(1) Max. Conductor Temperature .............................................................................................................................. 90°C
(2) Max. Ambient Temperature: In Air ..................................................................................................... 25°C In Ground .............................................................................................. 15°C
(3) Ground Thermal Resistivity .......................................................................................................................1.2°C 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 In ground
Single-corea
2-core (A) 3- or 4- core (AA)
Single-corea
2-core (A) 3- or 4- core (AA)Trefoil (A) Flat (A) Trefoil (A) Flat (A)
Copper Conductors
1625355070
951201501852400
300400500630800
1000
---
217277
340395454522615
70080090510191107
1202
---
279350
425488543610700
775834910986
1032
1098
118154190229288
355411469541639
728838
---
-
101132162196247
305353404465549
626720
---
-
---
231284
340386431485558
623691765841888
942
---
241295
350395485482545
597637688737760
797
141183219259317
381433185547632
708799
---
-
119152182217266
319363406458529
592667
---
-
Aluminium Conductors
1625355070
95120150185240
300
---
162208
255295340392464
532
---
209264
322370417473550
619
90114141169213
263----
-
76100122147186
229266305352417
478
---
177218
260296331374433
486
---
185227
270306339380435
483
108138165196240
288----
-
91116139165203
244278311353409
461
45
Table 7.2 CURRENT RATINGS FOR 1.8 / 3kV ARMOURED XLPE CABLES
Conductor size (mm2)
In Air In ground
Single-corea
3-core (A)Single-corea
3-core (A)Trefoil (A) Flat (A) Trefoil (A) Flat (A)
Copper Conductors
1625355070
95120150185240
300400500630800
1000
---
226282
346402457523616
702800905
10191107
1202
---
285358
440512585673801
9251081125514611683
1902
106140166201252
309359409471556
639740
---
-
---
222271
324366409460528
589651720789831
880
---
232284
341388436493573
648741844961
1085
1203
114147175207254
305347390441510
576653
---
-
Aluminium Conductors
1625355070
95120150185240
300
---
169212
259302343394465
533
---
214268
328382434501595
686
80105125151190
233270307355420
484
---
170208
248282315355410
460
---
178217
260297332377438
495
87113134158194
233266298338392
444
a Single-core cables with aluminium wire armour
46
Table 7.3 CURRENT RATINGS FOR 3.6 / 6kV TO 8.7 / 15kV ARMOURED XLPE CABLES
Conductor size (mm2)
In Air In ground
Single-corea
3-core (A)Single-corea
3-core (A)Trefoil (A) Flat (A) Trefoil (A) Flat (A)
Copper Conductors
25 b35 b50 b70
95120150185240
300400500630800
1000
--
235285
360415470540640
74084094011101270
1400
--
295370
455520600690820
9401100128015001740
1960
145175220270
330375430490570
650740
---
-
--
220270
320360410455520
580650710760810
860
--
230280
335380430485560
640730830940
1070
1180
140170210255
300340380430490
540600
-
-
Aluminium Conductors
25 b35 b50 b70
95120150185240
300400500630800
--
180225
260320365425500
580670790910
1052
--
230290
350410465530640
730860
101011901400
115140170210
250295330385450
510590
---
--
170210
250280315355405
455510570640769
--
175215
260295330375440
495570650750
-
115135160195
230265300335380
435490
---
a Copper wire screened, unarmouredb Not applicable to all voltages, see dimension tables for availability
47
Table 7.4 CURRENT RATINGS FOR 12 / 20kV TO 18 / 30Kv ARMOURED XLPE CABLES
Conductor size (mm2)
In Air In ground
Single-corea
3-core (A)Single-corea
3-core (A)Trefoil (A) Flat (A) Trefoil (A) Flat (A)
Copper Conductors
35507095120
150185240300400
5006308001000
-245300360425
485550650740850
980113012901430
-295365450520
590670800920
1070
1250145016901910
180225275330380
430490570650740
----
-220270320360
410460530600690
760850930
1010
-230280335380
430485560640730
830950
10701190
170210255295335
375420480530590
----
Aluminium Conductors
35507095120
150185240300400
5006308001000
-190235280330
375430510580680
790920
10701210
-230285345400
455520620710840
980108013601560
145175215260300
335390460520600
----
-170210250280
320360415475550
610690780860
-175215260295
330375440495570
650750860970
135160195230260
290330380425480
----
a Copper wire screened, unarmoured
48
Table 7.5 CURRENT RATINGS FOR132 kV SINGLE CORE UNARMOURED XLPE CABLES
Conductor size (mm²)
In air In ground
Trefoil (A) Flat (A) Trefoil (A) Flat (A)
Copper Conductors
300400
500630
8001000
645735
850975
1101220
695810
9451090
12601420
495555
615675
750800
570651
745845
9501030
Aluminium Conductors
300400
500630
8001000
485560
650745
845970
540635
745870
10151155
400455
510570
630680
445510
590675
770850
49
RATING FACTORS FOR CABLES IN AIRTABLE 7.6 RATING FACTORS FOR AMBIENT AIR TEMPERATURE
Ambient air temperature 20°C 25°C 30°C 35°C 40°C 45°C 50°CRating Factors 1.05 1.00 0.95 0.91 0.86 0.80 0.75
RATING FACTORS CABLES IN GROUNDTable 7.7 RATING FACTORS FOR GROUND TEMPERATURE
Ground Temperature 10°C 15°C 20°C 25°C 30°C 35°C 40°C 45°CRating 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
Conductor size (mm²)Thermal Resistivity (°Cm / W)
0.8 0.9 1.0 1.5 2.0 2.5 3.0Single - core cables
Up to 150 1.16 1.11 1.07 0.91 0.81 0.73 0.67From 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
Multicore cablesUp to 16 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 0.70From 185 to 400 1.16 1.11 1.07 0.92 0.82 0.74 0.68
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
0.50.60.8
1.01.31.5
1.82.02.5
3.0 or more
1.000.990.97
0.950.940.93
0.920.910.900.89
1.000.980.96
0.940.920.91
0.890.880.870.86
1.000.970.94
0.920.900.89
0.870.860.850.83
--
1.00
0.980.960.95
0.940.920.910.90
--
1.00
0.970.950.94
0.920.900.890.88
50
Table 7.10 GROUP RATING FACTORS FOR CIRCUITS OF THREE SINGLE CORE CABLES, IN TREFOILAND LAID FLAT TOUCHING, HORIZONTAL FORMATION
Cable Voltage (kV)
Number of circuits
Spacing of circuits (between centres of cable groups)
Touching0.15m* 0.3m 0.45m 0.6m
Trefoil Laid Flat
0.6 / 1
23456
0.770.650.590.550.52
0.800.680.630.580.56
0.820.720.670.630.60
0.880.790.750.720.70
0.900.830.810.780.77
0.930.870.850.830.82
1.8 / 3 to 12 / 20
23456
0.870.660.6
0.550.52
0.800.690.630.580.55
0.810.710.650.610.58
0.850.760.720.680.66
0.880.800.760.730.72
0.900.830.800.770.76
18 / 30
23456
0.790.670.620.570.54
0.810.700.650.600.57
0.810.710.650.600.57
0.850.760.720.680.66
0.880.800.760.730.72
0.900.830.800.760.76
* 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
Cable Voltage (kV)
Number of Cables in group
Spacing of circuits (between centres of cable groups)
Touching 0.15m 0.3m 0.45m 0.6m
0.6 / 1
23456
0.810.700.630.580.55
0.870.780.740.700.67
0.910.840.810.780.76
0.930.870.860.830.82
0.940.900.890.870.86
1.8 / 3 to ]12 / 20
23456
0.800.690.630.570.55
0.850.750.700.660.63
0.890.800.770.730.71
0.900.840.800.780.76
0.920.860.840.810.80
18 / 30
23456
0.800.700.640.590.56
0.830.730.680.630.60
0.870.780.740.700.68
0.890.820.780.750.74
0.910.850.820.790.78
51
TABLE 7.12 METRIC CONDUCTOR SIZESAND RESISTANCE (20°C) FOR FIXED WIRING
Conductor size (mm2)
Maximum d.c. resistance Conductor size (mm2)
Maximum d.c. resistance
Plain copper (ohm / km)
Metal coated copper (ohm
/ km)
Aluminium* (ohm / km)
Plain copper
(ohm / km)
Metal coated copper (ohm
/ km)
Aluminium* (ohm / km)
0.50.75
11.52.5
46101625
35507095120
150185240300400
36.024.518.112.17.4
4.613.081.831.150.727
0.5240.3870.2680.1930.153
0.1240.09910.07540.06010.0470
36.724.818.212.27.56
4.703.111.841.16
0.734
0.5290.3910.2700.1950.154
0.1260.100
0.07620.06070.0475
-----
7.414.613.081.911.20
0.8680.6410.4430.3200.253
0.2060.1640.1250.100
0.0778
500630800
10001200
1400 +1600 +1800 ‡2000 ‡
1150 ‡1130 ‡
380480600740960
1200
0.03660.02830.02210.01760.0151
0.01290.01130.01010.0090
0.01560.0138
------
0.03690.03860.02240.01770.0151
0.01290.01130.01010.0090
--
------
0.06050.04690.03670.02910.0247
0.02120.01860.01650.0149
0.02580.0228
0.08000.06330.05150.04100.03130.0250
* 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.
52
TABLE 7.13 ELECTRICAL CHARACTERISTICS0.6 / 1Kv ARMOURED XLPE CABLES
Conductor Size (mm2)
Single-core cables* Multicore cables
A.C. resistance at 90°C Reactance (50Hz) A.C. resistance at 90°C Reactance (50Hz) (ohm
/ km)Copper
(ohm / km)Aluminium (ohm / km)
Trefoil (ohm / km )
Flat # (ohm / km )
Copper (ohm / km)
Aluminium (ohm/km)
1625355070
95120150185240
300400500630800
1000
---
0.4940.342
0.2470.1970.1600.1280.0989
0.08020.06400.05150.42000.0363
0.0316
---
0.8220.568
0.4110.3250.2650.2110.162
0.130----
-
---
0.1060.103
0.0980.0960.0970.0960.092
0.0900.0900.0890.0860.086
0.084
---
0.1450.162
0.1570.1550.1560.1550.151
0.1490.1480.1460.1440.144
0.142
1.470.9270.6680.4940.342
0.2470.1970.1600.128
0.0989
0.08020.06400.05150.04200.0363
0.0316
2.451.541.11
0.8220.568
0.4110.3250.2650.2110.162
0.130----
-
0.0800.0790.0770.0760.075
0.0730.0730.0730.0730.073
0.072----
-
53
Table 7.14 ELECTRICAL CHARACTERISTICS 1.8 / 3kV ARMOURED XLPE CABLES
Conductor size (mm2)
Single-core cables* 3-core cables
A.C. resistance at 90°C Reactance (50Hz)
Capacitance (µF / km )
A.C. resistance at 90°CReactance
(50Hz) (ohm / km)
Capacitance (µF / km )Copper
(ohm / km)Aluminium (ohm / km)
Trefoil (ohm / km )
Flat # (ohm / km )
Copper (ohm / km)
Aluminium (ohm/km)
1625355070
95120150185240
300400500630
---
0.4940.342
0.2470.1950.1600.1280.098
0.0800.0640.0510.042
---
0.8220.568
0.4110.3250.2650.2110.162
0.130---
---
0.1160.110
0.1040.1040.1000.0980.094
0.0910.0900.0890.086
---
0.1720.165
0.1600.1590.1560.1540.150
0.1470.1470.1450.143
---
0.310.36
0.420.450.490.540.63
0.700.770.800.84
1.470.9270.6680.4940.342
0.2470.1950.1600.1280.098
0.080---
2.421.541.11
0.8220.568
0.4110.3250.2650.2110.162
0.130---
0.1040.0950.0920.0880.084
0.0810.0790.0770.0760.074
0.073---
0.180.220.250.270.31
0.350.380.420.460.51
0.57---
* Aluminium wire armoured # Twice cable diameter spacing between centres
54
Table 7.15 ELECTRICAL CHARACTERISTICS 3.6 / 6kV ARMOURED XLPE CABLES
Conductor size (mm2)
Single-core cables* 3-core cables
A.C. resistance at 90°C Reactance (50Hz)
Capacitance (µF / km )
A.C. resistance at 90°CReactance
(50Hz) (ohm / km)
Capacitance (µF / km )Copper
(ohm / km)Aluminium (ohm / km)
Trefoil (ohm / km )
Flat # (ohm / km )
Copper (ohm / km)
Aluminium (ohm/km)
3.6 / 6 kV
1625355070
95120150185240
300400500630
---
0.4940.342
0.2470.1950.1600.1280.098
0.0800.0640.0510.042
---
0.8220.568
0.4110.3250.2650.2110.162
0.130---
---
0.1160.110
0.1040.1040.1000.0980.094
0.0910.0900.0890.086
---
0.1720.165
0.1600.1590.1560.1540.150
0.1470.1470.1450.143
---
0.310.36
0.420.450.490.540.63
0.700.770.800.84
1.470.9270.6680.4940.342
0.2470.1950.1600.1280.098
0.080---
2.421.541.11
0.8220.568
0.4110.3250.2650.2110.162
0.130---
0.1040.0950.0920.0880.084
0.0810.0790.0770.0760.074
0.073---
0.180.220.250.270.31
0.350.380.420.460.51
0.57---
6 / 10kV
1625355070
95120150185240
300400500630
---
0.4930.342
0.2470.1960.1590.1280.098
0.07900.06320.05100.0416
---
0.8210.569
0.4100.3250.2650.2110.162
0.1300.102
0.08040.0639
---
0.1270.120
0.1140.1090.1060.1030.099
0.0960.0930.0900.087
---
0.1850.177
0.1710.1660.1630.1600.156
0.1530.1500.1470.145
---
0.270.31
0.340.370.400.440.49
0.520.590.660.74
1.470.9270.6680.4930.342
0.2470.1960.1590.128
0.0984
0.07970.0639
--
2.451.541.11
0.8220.568
0.4100.3250.2650.2110.161
0.1300.102
--
0.1340.1240.1160.1110.106
0.1000.0970.0940.0920.089
0.0860.083
--
0.210.240.260.280.32
0.360.390.420.460.51
0.560.62
--
* Copper wire screened, unarmoured # Twice cable diameter spacing between centres
55
Table 7.16 ELECTRICAL CHARACTERISTICS 8.7 / 15kV AND 12 / 20kV ARMOURED XLPE CABLES
Conductor size (mm2)
Single-core cables* 3-core cables
A.C. resistance at 90°C Reactance (50Hz)
Capacitance (µF / km )
A.C. resistance at 90°CReactance
(50Hz) (ohm / km)
Capacitance (µF / km )Copper
(ohm / km)Aluminium (ohm / km)
Trefoil (ohm / km )
Flat # (ohm / km )
Copper (ohm / km)
Aluminium (ohm/km)
8.7 / 15kV
1625355070
95120150185240
300400500630
---
0.4930.343
0.2470.1960.1590.1280.0979
0.07890.06300.05070.0414
---
0.8220.568
0.4100.3250.2640.2110.161
0.1300.1020.802
0.0636
---
1.3200.125
0.1190.1140.1110.1070.103
0.1000.0970.0930.090
---
0.1900.183
0.1760.1710.1680.1640.160
0.1560.1530.1510.147
---
0.220.25
0.270.290.320.340.38
0.420.470.510.57
1.470.9270.6680.4930.343
0.2470.1960.1590.128
0.0982
0.07940.0636
--
2.451.541.11
0.8220.568
0.4100.3250.2640.2110.161
0.1300.102
--
0.1430.1320.1240.1180.112
0.1060.1020.1000.0970.093
0.0900.087
--
0.170.190.210.230.26
0.290.310.340.370.41
0.450.50
--
12 / 20 kV
1625355070
95120150185240
300400500630
---
0.4940.342
0.2470.1960.1590.1280.098
0.0790.0630.0510.041
---
0.8210.569
0.4090.3240.2650.2110.160
0.1290.1010.0800.064
---
0.1380.131
0.1240.1190.1160.1130.108
0.1040.1010.0970.094
---
0.1920.185
0.1780.1730.1700.1650.161
0.1580.1550.1520.149
---
0.190.22
0.240.260.280.300.34
0.370.400.440.49
-0.9270.6680.4930.342
0.2470.1960.1590.1270.098
0.0790.063
--
-1.541.11
0.8220.568
0.4100.3250.2640.2110.161
0.1300.102
--
-0.1390.1300.1240.118
0.1110.1070.1040.1010.097
0.0940.090
--
-0.170.180.200.22
0.240.260.280.310.34
0.370.41
--
* Copper wire screened, unarmoured # Twice cable diameter spacing between centres
56
Table 7.17 ELECTRICAL CHARACTERISTICS 18 / 30kV ARMOURED XLPE CABLES
Conductor size (mm2)
Single-core cables* 3-core cables
A.C. resistance at 90°C Reactance (50Hz)
Capacitance (µF / km )
A.C. resistance at 90°CReactance
(50Hz) (ohm / km)
Capacitance (µF / km )Copper
(ohm / km)Aluminium (ohm / km)
Trefoil (ohm / km )
Flat # (ohm / km )
Copper (ohm / km)
Aluminium (ohm/km)
7095120150185
240300400500630800
0.3420.2470.1960.1600.128
0.09770.07850.06240.05000.04050.0388
0.5680.4110.3240.2640.211
0.16000.12900.10100.07970.06300.0509
0.1430.1340.1290.1250.121
0.1160.1120.1070.1040.0990.095
0.1940.1890.1840.1780.174
0.1690.1660.1620.1580.1550.151
0.160.180.190.210.22
0.2500.2700.2900.3200.3500.400
0.3420.2470.1960.1590.128
0.09780.0788
----
0.5680.4110.3250.2650.211
0.1610.130
----
0.1350.1270.1220.1180.114
0.1090.105
----
0.160.180.190.210.22
0.240.26
----
TABLE 7.18 ELECTRICAL CHARACTERISTICS132kV SINGLE CORE UNARMOURED XLPE CABLES
Conductor size (mm2)
Single-core cables*
A.C. resistance at 90°C Reactance (50Hz)Capacitance
(µF / km )Copper (ohm / km)
Aluminium (ohm / km)
Trefoil (ohm / km )
Flat # (ohm / km )
300400500630
8001000
0.0780.0600.0490.039
0.032-
0.1290.0990.0780.062
0.0500.041
0.1470.1400.1320.127
0.1210.117
0.1980.1900.1820.173
0.1650.158
0.1300.1400.1600.170
0.1950.210
* Aluminium wire armoured# Twice cable diameter spacing between centres
57
Table 7.19 TEMPERATURE CORRECTION FACTORS FOR CONDUCTOR RESISTANCE
Temperature of conductor (°C) Factor to convert to 20°C Reciprocal to convert from 20°C
56789
1011121314
1516171819
2021222324
2526272829
3035404550
5560657075
808590
1.0641.0591.0551.0501.046
1.0421.0371.0331.0291.025
1.0201.0161.0121.0081.004
1.0000.9960.9920.9880.984
0.9800.9770.9730.9690.965
0.9620.9430.9260.9090.893
0.8770.8620.8470.8330.820
0.8060.7940.781
0.9400.9440.9480.9520.956
0.9600.9640.9680.9720.976
0.9800.9840.9880.9920.996
1.0001.0041.0081.0121.016
1.0201.0241.0281.0321.036
1.0401.0601.0801.1001.120
1.1401.1601.1801.2001.220
1.2401.2601.280
The manufacturer reserves the right to modify or vary the construction or specification of any of the products at their dis-cretion 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.
58
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 1n (θf + βθi + β )
tWhere,IAD = short-circuit current calculated on an adiabatic basis (A)ε = factor to allow for heat loss into the adjacent components. For adiabatic calculations e = 1S = nominal cross-sectional area (mm2)θi = Initial temperature (°C)θf = final temperature (°C)t = duration of short circuit (s)K = constant depending on the material of the current carrying component (As½/mm2), for Cu. 226 for Al. 148 for Steel 78 for Lead 42β = 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
59
Curves are based on: * Cables at maximum operating temperature of 90ºC at start of short-circuit. * Final conductor temperature of 250ºC.
Duration of Short Circuit (second) for Copper Conductor
Max
imum
Per
mis
sibl
e Sh
ort
Cir
cuit
Cur
rent
(kA
)
500
400
300
200
150
100
Conductor Sizes (mm2)
1000
800
630
500
400
300
240
185
150
120
95
70
50
35
25
16
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.0
3.0
4.0
5.0
106
809070
60
50
40
30
20
10
97
6
5
4
3
2
1
108
SHORT CIRCUIT CURRENT OF XLPE CABLES (COPPER CONDUCTOR)
60
SHORT CIRCUIT CURRENT OF XLPE CABLES (ALUMINIUM CONDUCTOR)
Duration of Short Circuit (second) for Aluminium Conductor
Max
imum
Per
mis
sibl
e Sh
ort
Cir
cuit
Cur
rent
(kA
)
300
200
150
100
9080
Conductor Sizes (mm2)
1000
800
630
500
400
300
240
185
150
120
95
70
50
35
2516
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.0
3.0
4.0
5.0
106
70
60
50
40
30
20
10
89
7
6
5
4
3
2
1
Curves are based on: * Cables at maximum operating temperature of 90ºC at start of short-circuit. * Final conductor temperature of 250ºC.
Leader Cable Industry Berhad (26936-P)
Lot 1385, Tikam Batu Industrial Estate 08600 Sungai Petani, Kedah, MalaysiaTel: 604-438 9988 Fax: 604-438 8497 www.leadercable.com.my
Selangor Sales OfficeUnit 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