Detailed Product Description
Outdoor Vacuum Circuit Breaker (VCB)(ZW32 Series)
General
Vacuum Circuit Breaker (ZW32-12 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 .
Normal working environment
1 Ambient air temperature : -40 to 40; daily temperature difference : 25 ;
2 Altitude :≤2000m (if the place is at higher altitude , enhance rated insulation level , it should be custom-made for 2000m );
3 Wind pressure : ≤700Pa(Equivalent to wind speed 34m/s);
Main 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 | ||
