Item | Unit | Specification |
Rate voltage | kV | 40.5 |
Rate current | A | 630/1250 |
Rate frequency | Hz | 50 |
Power frequency withstand voltage(value) | kV | 42 |
Lightning impulse withstand current (peak) | kV | 75 |
Rated short-circuit breaking current | kA | 20 |
Rated short-circuit making current (peak) | kA | 50 |
Dynamic peak withstand current | kA | 50 |
Thermal withstand current,4S | kA | 20 |
Rated operating cycle | O-0.3s -CO-3s -CO-3s CO | |
Rated short-circuit current breaking times | times | 30 |
Mechanical life | times | 10000 |
Working power supply voltage | V | 220(110) |
Creepage | mm/kV | ≥31 |
Item | Unit | Specification |
Contact stroke | mm | 11±1 |
Contact over-travel | mm | 3±0.5 |
Opening average speed | m/s | 0.6±0.2 |
Closing average speed | m/s | 1.0-1.4 |
Contact closing bouncing duration | ms | ≤2 |
Center distance between phases | mm | 280±2 |
Closing synchronism between poles | ms | ≤2 |
Opening synchronism between poles | ms | ≤2 |
Conductive loop resistance of each phase | μΩ | <120;With isolation<170 |