No. | Item | Unit | Data |
1 | Rated Frequency | Hz | 50 |
2 | Rated Voltage | kV | 12 |
3 | Rated Current | A | 630(1250) |
4 | Rated Short-time Withstand Current and Duration | kA/s | 20(25)/4 |
5 | Rated peak withstand current | kA | 50(63) |
6 | Rated short-time power frequency withstand voltage | Interphase, to earth(dry) | kV/min | 42/1 |
Fracture(dry) | 48/1 |
Interphase, to earth(wet) | 30/1 |
Fracture(wet) | 36/1 |
7 | Rated lightning impulse withstand voltage | Interphase, to earth | kV | 75 |
Fracture | 85 |
8 | Circuit resistance | μΩ | ≤80 |
9 | Mechanical life | Times | 3000 |
10 | Pollution grade | | e-Level |
11 | Creepage distance | mm | ≥372 |
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. |