China vacuum interrupter,vacuum interrupter Manufacturer
Operating Mechanism
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| Parameter | Unit | Data |
|---|---|---|
| Rated frequency | Hz | 50/60 |
| Rated Voltage | kV | 40.5 |
| Rated short-time power-frequency withstand voltage (1 min) | kV | 95 |
| Rated lightning impulse withstand voltage | kV | 185 |
| Rated Current | A | 2500 |
| Circuit resistance at lowest rated contact force | ¦Ì¦¸ | ≤12 |
| Rated short-circuit breaking Current | kA | 31.5 |
| Breaking operations of rated short circuit breaking current | Times | 20 |
| Rated short-time withstand current | kA | 31.5 |
| Rated duration of short-circuit | s | 4 |
| Rated peak withstand current | kA | 80 |
| Rated short-circuit making Current | kA | 80 |
| *Rated breaking current of single capacitor bank | A | 400 |
| *Rated breaking current of back-to-back capacitor bank | A | 400 |
| Rated operating sequence | O-0.3s-CO-180s-CO | |
| Weight of movable parts | kg | 2.5 |
| Closing force due to bellow and atmosphere | N | 120±40 |
| Force required to hold contacts open at full stroke | N | 260±40 |
| Clearance between open contacts | mm | 18±1 |
| Average opening speed(average of first 75% of contact gap) | m/s | 1.55±0.15 |
| Average closing speed(average of last 30% of contact gap) | m/s | 0.7±0.2 |
| Rated added external contact final force | N | 3100±200 |
| Added external contact force at contact touch point | N | 2500±160 |
| Contact bouncing duration at closing operation | ms | ≤3 |
| Closing and Opening non-simultaneity of three-phase Contacts | ms | ≤2 |
| Maximum Rebound during opening | mm | ≤3 |
| Storage life | years | 20 |
| Mechanical endurance | Times | 10000 |
| Contacts limit erosion | mm | 3 |
