| Technical Parameters 12KV | ||
| Content | Unit | Parameter |
| Rated Voltage | KV | 12 |
| Rated frequency | HZ | 50 |
| Rated currency | A | 630 |
| Rated short circuit withstand cu『rent | KA | 20/25 |
| Rated peak withstand current | KA | 63 |
| Rated short circuit duration | s | 2 |
| Rated short circuit cloing current | KA | 63 |
| Mechnicial life | Time | 10000 |
| Open triphase dissimilar | ms | ≤2 |
| Closing triphase dissimilar | ms | ≤2 |
| Opening average speed | mis | 3-6 |
| Closing average speed | m/s | 4-6 |
| Air working step pressure fracture: 22KV -28KV/1min | ||
| The primary loop resistance: A phase B phase C phase(load switch circuit resistance ≤40μΩ) | ||
| Grounding resistance: A phase B phase C phase (grounding resistance load switch ≤500μΩ) | ||
