Customization: | Available |
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Breaking Capacity: | High Voltage Circuit Breakers |
Operation: | Manual Type |
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tem | Unit | ZW8-12(G)/630-6.3kA | ZW8-12(G)/630-12.5kA | ZW8-12(G)/630-20kA | |
Rated voltage | kV | 12 | |||
Rated current | A | 630 | |||
Rated short circuit breaking current | kA | 6.3 | 12.5 | 20 | |
Rated short circuit making current(peak) | kA | 16 | 31.5 | 50 | |
Rated peak value withstand current | kA | 16 | 31.5 | 50 | |
Rated short time withstand current | kA | 6.3 | 12.5 | 20 | |
Rated insulation eve | 1min PF.withstand voltage | kV | 42 | ||
Lightning impulse withstand voltage(peak) | kV | 75 | |||
Rated operation sequences | 0-0.3s-CO-180s-CO | ||||
Mechanical life time | time | 10000 | |||
Rated short-circuit current breaking times | time | 30 | |||
Rated closing time voltage of operation mechanism | V | 110,220 | |||
Rated opening tme voltage of operation mechanism | V | 110,220 | |||
Contact opening distance | mm | 11±1 | |||
Over travel(spring compressed length) | mm | 3±0.3 | |||
Tri-phase 0/C asynchronous | ms | ≤2 | |||
Contact closing bounce time | ms | ≤2 | |||
Average opening speed | m/s | 1.0±0.2 | |||
Average closing speed | m/s | 0.7±0.15 | |||
Opening time | Under max operation voltage | ms | 15-50 | ||
Under min operation voltage | ms | 30-60 | |||
Closing time | ms | 25-50 | |||
Each phase main circuit resistance | μQ | ≤120(with G≤200) | |||
Allowable attrition thickness of moving and fixed contacts | mm | 3 | |||
Weght | kg | 152(with G 180) | |||
Phases center distance | mm | 175±1.5 |