China 12KV VACUUM INTERRUPTER, Find details about China vacuum interrupter, vacuum tube from 12KV VACUUM INTERRUPTER
| Main Technical Data | ||
| Rated voltage | kv | 12 |
| Rated current | A | 630 |
| Rated frequency | Hz | 50 |
| Rated short-time power frequency withstand voltage(1min) | kv | 42 |
| Rated lighting impulse withstand voltage | kv | 75 |
| Rated short-circuit breaking current | kA | 12.5/16/20 |
| Rated short-circuit making current(peak) | kA | 31.5/40/50 |
| Rated operations of short-circuit breaking current interruption | times | 30 |
| Rated single capacitor bank breaking current | A | 400 |
| Rated short-time withstand current | kA | 12.5/16/20 |
| Rated peak withstand current | kA | 31.5/40/50 |
| Rated duration of short-circuit | s | 4 |
| Mechanical life | times | 10000 |
| Contact closing force due to bellows and atmosphere | N | 70±40 |
| Counterforce at rated contact stroke | N | 120±50 |
| Three-pole simultaneity | μΩ | ≤20 |
| Shelf life | years | 20 |
| Contact erosion limit | mm | 3 |
| Weight of moving parts | kg | ≤0.7 |
| 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 | 900/1300/1600±100 |
| Contact bouncing duration at closing operation | ms | ≤2 |
| Contact bouncing bank amplitude of opening operation | ms | ≤2 |
| Three-pole simultaneity | ms | ≤1 |