China Medium Voltage Vb4/S 17.5kv/630A-16ka Indoor Lateral Vcb, Find details about China Indoor Vacuum Circuit Breaker, Vcb from Medium Voltage Vb4/S 17.5kv/630A-16ka Indoor Lateral Vcb
No | Item | Unit | Parameter | ||
1 | Rated voltage | kV | 12 | 17.5/24 | |
2 | Rated frequency | Hz | 50/60 | ||
3 | Rated current | A | 630/800/1250/1600 | ||
4 | 1min Power frequency withstand voltage | wet | kV | 38 | 50 |
dry | kV | 48 | 60 | ||
5 | Lightning impulse withstand voltage | kV | 75 | 125/150 | |
6 | Rated short circuit breaking current (peak) | kA | 63/80/100 | ||
7 | Rated active load and close circuit breaking current | A | 63 | 50 | |
8 | Rated short breaking current | kA | 20/25/31.5kA | ||
9 | Rated short circuit making current (peak) | kA | 63/80/100 | ||
10 | Rated cable(line) charging breaking current | A | 50 and 10 | ||
11 | Cable charge breaking current in earthing fault | A | 20 | 20 | |
12 | Rated withstand current (peak) | kA | 63/80/100 | ||
13 | Short time withstand current (4s) | kA | 31.5 | ||
14 | Mechanism life | times | 10000 |