Technical Information Power And Control Cables Power Appendixes General Introduction to Cable Insulation Thickness Values of LV and MV cables صفحه Insulation Thickness Values of LV and MV cables
Insulation thickness of power cables acc to IEC 60502-1
|
Nominal Cross Section of Conductor |
PVC Insulated |
XLPE Insulated |
||
|
mm2 |
0.6/1 kV |
1.8/3 kV |
0.6/1 kV |
1.8/3 kV |
|
1.5 & 2.5 |
0.8 |
|
0.7 |
|
|
4 & 6 |
1.0 |
|
0.7 |
|
|
10 & 16 |
1.0 |
2.2 |
0.7 |
2.0 |
|
25 & 35 |
1.2 |
2.2 |
0.9 |
2.0 |
|
50 |
1.4 |
2.2 |
1.0 |
2.0 |
|
70 |
1.4 |
2.2 |
1.1 |
2.0 |
|
95 |
1.6 |
2.2 |
1.1 |
2.0 |
|
120 |
1.6 |
2.2 |
1.2 |
2.0 |
|
150 |
1.8 |
2.2 |
1.4 |
2.0 |
|
185 |
2.0 |
2.2 |
1.6 |
2.0 |
|
240 |
2.2 |
2.2 |
1.7 |
2.0 |
|
300 |
2.4 |
2.4 |
1.8 |
2.0 |
|
400 |
2.6 |
2.6 |
2.0 |
2.0 |
|
500 |
2.8 |
2.8 |
2.2 |
2.2 |
|
630 |
2.8 |
2.8 |
2.4 |
2.4 |
|
800 |
2.8 |
2.8 |
2.6 |
2.6 |
|
1000 |
3.0 |
3.0 |
2.8 |
2.8 |
MV power cables acc to IEC 60502-2
|
Nominal Cross Section of Conductor |
XLPE Insulated |
||||
|
mm2 |
3.6/6 kV |
6/10 kV |
8.7/15 kV |
12/20 kV |
18/30 kV |
|
10 |
2.5 |
---- |
----- |
----- |
----- |
|
16 |
2.5 |
3.4 |
----- |
----- |
----- |
|
25 |
2.5 |
3.4 |
4.5 |
----- |
----- |
|
35 |
2.5 |
3.4 |
4.5 |
5.5 |
----- |
|
50 to 185 |
2.5 |
3.4 |
4.5 |
5.5 |
8.0 |
|
240 |
2.6 |
3.4 |
4.5 |
5.5 |
8.0 |
|
300 |
2.8 |
3.4 |
4.5 |
5.5 |
8.0 |
|
400 |
3.0 |
3.4 |
4.5 |
5.5 |
8.0 |
|
500 to 1000 |
3.2 |
3.4 |
4.5 |
5.5 |
8.0 |
Note : Any smaller conductor cross-section than those given in this table is not recommended. However, if a smaller cross-section is needed, either the diameter of the conductor may be increased by a conductor screen , or the insulation thickness may be increased in order to limit, at the values calculated with the smallest conductor size given in this table, the maximum electrical stresses applied to the insulation under test voltage.
