Technical specification |
No. | Item | Unit | Data |
1 | Rated frequency | Hz | 50 |
2 | Rated voltage | kV | 12 |
3 | Rated current | A | 630 | 1250 |
4 | Rated short-time power frequency withstand voltage | Interphase, to earth(wet) | kV/min | 34/1 |
Interphase, to earth(dry) | 42/1 |
Break(dry) | 48/1 |
Secondary circuit to earth | 2/1 |
5 | Rated lightning impulse withstand voltage | Interphase, to earth | kV | 75 |
Break | 85 |
6 | Rated short-circuit breaking current(virtual value) | kA | 20 | 25 |
7 | Rated short-circuit making current(peak) | 50 | 63 |
8 | Rated short-time withstand current and duration | kA/s | 20/4 | 25/4 |
9 | Rated peak withstand current | kA | 50 | 63 |
10 | Rated short-circuit breaking current breaking times | Times | 30(E2) |
11 | SF6 gas-rated gage pressure | MPa | 0 |
12 | Main circuit resistance | μΩ | ≤120 |
13 | Rated operating voltage and rated voltage of the auxiliary circuit | V | AC/DC220,DC48,DC24 |
14 | Mechanical life | Times | 10000(M2) |
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. |