Customization: | Available |
---|---|
Breaking Capacity: | High Voltage Circuit Breakers |
Operation: | Electric Type |
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Item | Unit | Data | |||||
Rated voltage | kV | 12 | 24 | 40.5 | |||
Rated current | A | 630 | 630 | 630 | |||
Rated frequency | Hz | 50/60 | 50/60 | 50/60 | |||
Insulation level (SF6 0.07MPa/20°C) |
Power frequency withstand voltage | Between phases, towards ground | kV | 42 | 64 | 95 | |
Across the isolating distance | kV | 50 | 79 | 110 | |||
Lightning impulse withstand voltage | Between phases, towards ground | kV | 75 | 125 | 185 | ||
Across the isolating distance | kV | 85 | 145 | 215 | |||
Breaking capacity | Rated breaking current | A | 630 | 630 | 630 | ||
Breaking current at zero gauge pressure | A | 630 | 630 | 630 | |||
Rated MAX. breaking current (lock current) | A | 900 | 900 | 900 | |||
Rated thermal stability current (effective value) | kA | 20 | 20 | 20 | |||
Rated thermal stability time | S | 4 | 4 | 4 | |||
Rated short circuit making current /Rated dynamic stability current (peak) | kA | 50 | 50 | 50 |