| Rated current (A) |
up to 4000(*) |
| Short time withstand current (kA) |
up to 63 |
| Power frequency withstand voltage (kV) |
|
|
|
|
|
|
|
|
|
| · against earth |
140 |
230 |
275 |
325 |
460 |
395 |
450 |
520 |
620 |
| · across isolating distance |
160 |
265 |
315 |
375 |
530 |
435 |
520 |
610 |
800 |
| Lightning impulse withstand voltage (kV) |
|
|
|
|
|
|
|
|
|
| · against earth |
325 |
550 |
650 |
750 |
1050 |
1050 |
1175 |
1425 |
1550 |
| · across isolating distance |
375 |
630 |
750 |
860 |
1200 |
1050 |
1175 |
1425 |
1550 |
| |
|
|
|
|
|
(+170) |
(+205) |
(+240) |
(+315) |
| Switching impulse withstand voltage (kV) |
|
|
|
|
|
|
|
|
|
| · against earth |
- |
- |
- |
- |
- |
850 |
950 |
1050 |
1175 |
| · across isolating distance |
- |
- |
- |
- |
- |
700 |
800 |
900 |
900 |
| |
|
|
|
|
|
(+245) |
(+295) |
(+345) |
(+450) |