China 12kv High Voltage Embedded Pole for Vacuum Circuit Breaker, Find details about China Embedded Pole, Vacuum Circuit Breaker Parts from 12kv High Voltage Embedded Pole for Vacuum Circuit Breaker
Parameter item | Unit | Data |
Rated voltage | kV | 12 |
Rated current | A | 1250/1600 |
Rated frequency | Hz | 50/60 |
Rated short-time power frequency withstand voltage(1min) | kV | 48 |
Rated lightning impulse withstand voltage | kV | 95 |
Rated short-circuit breaking current | kA | 31.5/40 |
Rated short-time withstand current | kA | 80/100 |
Rated peak withstand current | kA | 80/100 |
Rated short-circuit making current | kA | 31.5/40 |
Rated short-circuit duration | s | 4 |
Rated single capacitor bank breaking current | A | 400 |
Rated back to back capacitor bank breaking current | A | 400 |
Rated operating sequence | O-0.3s-CO180s-CO | |
Breaking operations of rated short circuit breaking current | times | 30 |
Mechanical life | times | 10000 |
Contact automatic closing ability | N | 120±50 |
Force required to hold contact open at full stroke | N | 200±50 |
Circuit resistance at lowest rated contact force | μΩ | ≤25 |
Contact limit erosion | mm | 3 |
Internal gas pressure of vacuum interrupter | Pa | ≤1×10-3 |
Partial discharge | Pc | ≤5 |
Parameter item | Unit | Data |
Clearance between open contacts | mm | 10±1 |
Average opening speed | m/s | 1.05±0.15 |
Average closing speed | m/s | 0.7±0.1 |
Rated contact pressure | N | 3100±200 4300±200 |
Contact bouncing duration at closing operation | ms | ≤3 |
Closing and opening non-simultaneity of contacts | ms | ≤2 |
Maximum rebound during opening | mm | ≤3 |