ZW32-12 Outdoor Vacuum Circuit Breaker
Inquire NowDescription
ZW32-12 Outdoor Vacuum Circuit Breaker is a robust electrical device designed for reliable performance in power systems operating at 12kV and frequencies of 50Hz or 60Hz. This advanced circuit breaker effectively manages load currents, overload currents, and provides short circuit protection, making it ideal for substations, industrial applications, mining operations, and urban as well as rural electricity networks. Its design caters especially to environments requiring frequent operations and supports automatic power distribution networks. Conforming to the IEC62271-100 & GB1984 standards for AC high voltage circuit breakers, as well as the GB/T11022 technical requirements for switchgear, the ZW32-12 combines efficiency with safety, ensuring uninterrupted power supply.
Specifications
| Item | Unit | Data |
|---|---|---|
| Rated voltage | kV | 12 |
| Rated frequency | Hz | 50 |
| Rated current | A | 630 |
| Rated short circuit breaking current | kA | 12.5/16/20 |
| Rated withstand current (peak) | kA | 31.5/40/50 |
| Rated short-duration withstand current (4s) | kA | 12.5/16/20 |
| Rated short circuit making current (peak) | kA | 31.5/40/50 |
| Mechanical life | Times | Spring Operation 10000/Permanent Magnetic 30000 |
| Rated operating sequence | Times | O-0.3s-CO-180s-CO |
| Breaking number for rated short-circuit current | Times | 30 |
| Power frequency withstand voltage (1min) | kV | Dry test-42/48(to ground, inter-pole/fracture) Wet test-34 |
| Lightning impulse withstand voltage (peak) | kV | 75/85 (inter-pole/fracture) |
| Closing time | ms | 25~60 |
| Total breaking time | ms | ≤100 |
| Arcing time | ms | ≤20 |
| Rated input power of energy storage motor | W | 40 |
| Rated operating voltage and auxiliary circuit rated voltage | V | DC220/110/24, AC220/110 |
| Energy storage time under rated voltage | s | ≤10 |
| Rated current of over-current tripper | A | 5 |
Additional Information
Closing Coil:
| Item | Closing Coil | Opening Coil | Over-current Tripping Coil |
|---|---|---|---|
| Rated voltage (V) | 220 | 220 | |
| Rated working current(A) | AC:5, DC:3.2 | AC:5, DC:0.8 | 5 |
| Voltage and current range under normal working | Action on 65%-110% of rated voltage | Action on 65%-110% of rated voltage avoid tripping under less than 30% of rated voltage | Action on 65%-110% of rated voltage avoid tripping under less than 90% of rated voltage |
