Design & Construction
1.Conductor
2.Conductor screen
3.XLPE insulation
4.Insulation screen
5.Semiconducting tape
6.Lead sheath
7.PE or PVC outer sheath (Graphite coating or extruded semiconducting)
Application
Used for underground power transmission lines; laid on cable ladder, tray, buried direct in the ground or in duct in the ground

CURRENT RATING, SINGLE CIRCUIT
Nominal area
|
[mm²]
|
240
|
300
|
400
|
500
|
630
|
800
|
1000
|
1200
|
1600
|
2000
|
2500 |
Direct buried in ground
|
[A]
|
525
|
594
|
678
|
772
|
880
|
990
|
1147
|
1236
|
1408
|
1546
|
1682 |
Buried in duct
|
[A]
|
482
|
545
|
621
|
711
|
813
|
914
|
1063
|
1145
|
1309
|
1441
|
1577 |
In free air
|
Trefoil formation
|
[A]
|
597
|
682
|
788
|
907
|
1045
|
1184
|
1407
|
1524
|
1752
|
1931
|
2112 |
Flat formation
|
[A]
|
668
|
766
|
889
|
1029
|
1198
|
1373
|
1627
|
1771
|
2074
|
2330
|
2614 |
TECHNICAL DATA
Nominal cross- sectional area
|
Shape of conductor
|
Nominal Diameter of conductor
|
Nominal Thickness of conductor screen
|
Nominal Thickness of Insulation
|
Nominal Thickness of Insulation screen
|
Nominal Thickness of lead sheath
|
Nominal Thickness of Outer sheath
|
Approx. Overall diameter of cable
|
Approx. Weight of cable
|
Maximum DC resistance at 20oC
|
Capacitance
|
mm²
|
|
mm
|
mm
|
mm
|
mm
|
mm
|
mm
|
mm
|
kg/m
|
Ω/km
|
µF/km
|
240
|
CC
|
18.1
|
1.2
|
14.0
|
1.0
|
1.6
|
3.5
|
68
|
8.2
|
0.0754
|
0.17
|
300
|
CC
|
20.4
|
1.2
|
14.0
|
1.0
|
1.6
|
3.5
|
70
|
9.0
|
0.0601
|
0.18
|
400
|
CC
|
23.2
|
1.2
|
14.0
|
1.0
|
1.6
|
3.5
|
73
|
10.1
|
0.0470
|
0.20
|
500
|
CC
|
26.3
|
1.2
|
14.0
|
1.0
|
1.6
|
4.0
|
77
|
11.6
|
0.0366
|
0.21
|
630
|
CC
|
30.2
|
1.2
|
14.0
|
1.0
|
1.7
|
4.0
|
81
|
13.6
|
0.0283
|
0.23
|
800
|
CC
|
34.0
|
1.2
|
14.0
|
1.0
|
1.8
|
4.0
|
85
|
15.9
|
0.0221
|
0.25
|
1000
|
4S
|
38.7
|
1.2
|
14.0
|
1.0
|
1.8
|
4.0
|
89
|
18.6
|
0.0176
|
0.28
|
1200
|
4S
|
41.8
|
1.2
|
14.0
|
1.0
|
1.8
|
4.5
|
93
|
20.6
|
0.0151
|
0.30
|
1600
|
4S
|
48.3
|
1.2
|
14.0
|
1.0
|
1.9
|
4.5
|
100
|
25.4
|
0.0113
|
0.33
|
2000
|
5S
|
54.3
|
1.2
|
14.0
|
1.0
|
2.0
|
4.5
|
106
|
30.2
|
0.0090
|
0.36
|
2500
|
5S |
62.0 |
1.2 |
14.0 |
1.0 |
2.2 |
4.5 |
115 |
37.1 |
0.0072 |
0.40 |
CC : Compact circular stranded 4S : Four-segment stranded (miliken) 5S : Five-segment stranded (miliken)