Technical Information Power And Control Cables Power Appendixes General Electrical Data of Cables Cable’s Rated Voltage and Range of use صفحه Cable’s Rated Voltage and Range of use
Cable’s Rated Voltage and Range of use
Cables in accordance with IEC 60502-1 are intended for fixed installation :
• indoors
• outdoors
• underground
• in water
(Note: The relevant national installation regulations must be observed) Nominal and highest cable voltages
|
|
Nominal rated voltage U0/U |
Highest system voltage U0 |
||
|
kV |
Three phase system (kV) |
Single phase system (kV) |
Single phase system (kV) |
|
|
Low voltage (LV) acc to IEC 60502-1 |
0.6 / 1 |
1.2 |
1.4 |
0.7 |
|
1.8 / 3 |
3.6 |
4.2 |
2.1 |
|
|
Medium voltage (MV) acc to IEC 60502-2 |
3.6 / 6 |
7.2 |
8.3 |
4.2 |
|
6 / 10 |
12.0 |
14.0 |
7.0 |
|
|
8.7 / 15 |
17.5 |
20.0 |
10.0 |
|
|
12 / 20 |
24.0 |
28.0 |
14.0 |
|
|
18 / 30 |
36.0 |
42.0 |
21.0 |
|
1) both phases insulated
2) one phase grounded
3) max.voltage in d.c. systems 1.8 kv
U : Rated power-frequency voltage between phase conductors for which the cable is suitable.
U0 : Rated power-frequency voltage between conductor and earth or armour, metal sheath or screen for which the cable is suitabel.
Um : Maximum value of the “highest system voltage” between phase conductors for which the cable is suitable.
|
|
IEC Ratings |
BSI Equivalent |
|
U0 /U (Um) kV |
1.8 / 3 (3.6) * |
1.9 / 3.3 (3.6) * |
|
3.3 / 6 (7.2) |
3.8 / 6.6 (7.2) |
|
|
6 / 10 (12) |
6.35 / 11 (12) |
|
|
8.7 / 15 (17.5) |
8.7 / 15 (17.5) |
|
|
12 / 20 (24) |
12.7 / 22 (24) |
|
|
18 / 30 (36) |
19 / 33 (36) |
* 1.8 kV cable is referred to IEC 60502-1 and BSI 5467
