12KV Vacuum Interrupter for Vacuum Circuit Breaker
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12KV Vacuum Interrupter for Vacuum Circuit Breaker
| Main Technical Specification | Unit | Specification |
| Rated voltage | kV | 12 |
| Rated current | A | 630 |
| Rated frenquency | Hz | 50 |
| Rated short-time power frequency withstand voltage(1min) | kV | 32 |
| Rated lightning impulse withstand voltage | kV | 75 |
| Rated short-circuit breaking current | kA | 16/20 |
| Rated short-circuit making current(peak) | kA | 40/50 |
| Rated operations of short-circuit breaking current interruption | Times | 30 |
| Rated single capacitor bank breaking current | A | 400 |
| Rated short-time withstand current | kA | 16/20 |
| Rated peak withstand current | kA | 40/50 |
| Rated duration of short-circuit | S | 4 |
| Mechanical life | Times | 30000 |
| Contact closing force due to bellows and atmosphere | N | 120±40 |
| Counterforce at rated contact stroke | N | 180±50 |
| Circuit resistance at rated contact force | μΩ | ≤20 |
| Shelf life | Years | 20 |
| Contact erosion limit | mm | 3 |
| Weight of moving parts | Kg | ≤0.7 |
| Mechanical Data Required For Matched Vacuum Switchgear | ||
| Main Technical Specification | Unit | Specification |
| Rated contact stroke | mm | 9±1 |
| Average opening speed | m/s | 1.0±0.25 |
| Average closing speed | m/s | 0.65±0.15 |
| Added contact force | N | 1300/1600±100 |
| Contact bouncing duration at closing operation | ms | ≤2 |
| Contact bouncing bank amplitude of opening operation | mm | ≤2 |
| Three-pole simultaneity | ms | ≤1 |
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