GRH-12-1250/25D Fast-acting VCB
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Product details
GRH-12-1250/25D Fast-acting VCB
| Technical Characteristics | Unit | GRH-12-1250/25D |
| Rated voltage | kV | 12 |
| Rated current | A | 1250 |
| Rated frequency | Hz | 50 |
| Rated power frequency withstand voltage (1min) | kV | 42 |
| Rated lightning impulse withstand voltage (peak) | kV | 75 |
| Opening time | ms | <5 |
| Closing time | ms | <50 |
| Rated short circuit breaking current | kA | 25 |
| Closing asynchronism | ms | ≤2 |
| Opening asynchronism | ms | ≤2 |
| Rated short circuit making current (peak) | kA | >50 |
| Times of breaking 100% fault-current | Times | 50 |
| Rated operating sequence | - | O-180s-CO |
| Mechanical endurance | Times | 30000 |
| Rated current of single capacitor bank breaking | A | 630 |
| Rated current of back-to-back capacitor bank breaking | A | 400 |
| Opening mode under short-circuit condition | - | Externally driven |
| Mounting | Draw-out type |
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