Vacuum Circuit Breaker / Recloser
Detailed Product Description
Vacuum Circuit Breaker / Recloser
General
Vacuum Circuit Breaker / Recloser (ZW8-12 Series) are used for switching on/off load current , overload current and short circuit current in three phase power systems with AC 50 Hz and rated voltage 10-12kv . Matching with recloser controllers , the breaker can identify current characteristics and realize repetitious autoeclosing or permanent fault isolation . with its own PT power .
Advantages
- More suitable for different environment
- Lower circuit resistance and temperature rise
- Higher breaking capacity , excellent insulating performance
- True maintence free products
- Long service time of operating mechanism
- All being strictly tested before going out of factory
Technical Parameter
| Item | Unit | Parameter | ||
| Rated voltage | KV | 11 | 12 | |
| Rated current | A | 630 | 800 | 1250 |
| Rated Frenquency | Hz | 50 | ||
| 1 min power frequency withstand voltage | KA | 42 | ||
| lightning impuslse withstand voltage | KA | 75 | ||
| Rated short-circuit interrupting current | KA | 12.5 | 16 | 20 |
| Rated short-circuit closing current peak | KA | 31.5 | 40 | 50 |
| Rated short-time withstand current | KA | 12.5 | 16 | 20 |
| Rated withstand current peak | KA | 31.5 | 40 | 50 |
| Rated short-circuit breaking current breaking times | Times | 30 | ||
| Mechanical lifetime | Times | 10000 | ||
