Overview
ZW32ABG-12 outdoor high-voltage permanent magnet vacuum circuit breaker (hereinafter referred to as permanent magnet switch) is an outdoor high-voltage switchgear with three-phase AC 50Hz and rated voltage of 12kV. The permanent magnet switch is mainly used as a 10kV outgoing switch in a substation and a 10kV three-phase AC power system as a line protection switch for splitting and combining load current, breaking overload current and short-circuit current. The circuit breaker conforms to the technical standards such as GB1984-2003 "High Voltage AC Circuit Breaker", DL/T402-2007 "High Voltage AC Circuit Breaker Ordering Technical Conditions" and DL/T403-2000 "12kV-40.5 High Voltage Vacuum Circuit Breaker Ordering Technical Conditions".Normal Use Conditions
◆Ambient temperature: -40℃~+40℃; Altitude: 2000m and below; ◆The surrounding air can be polluted by dust, smoke, corrosive gas, steam or salt mist, and the pollution level is the target level; ◆The wind speed does not exceed 34m/s (equivalent to 700Pa on the cylindrical surface); ◆Special conditions of use: The circuit breaker can be used under normal conditions different from those specified above. Please negotiate with us for special requirements.The Main Technical Parameters
| Serial number | Project | Unit | Parameters |
| 1 | Rated voltage | KV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 |
| 4 | Rated short-circuit breaking current | KA | 20 |
| 5 | Rated peak withstand current (peak) | KA | 50 |
| 6 | Rated short-time withstand current | KA | 20 |
| 7 | Rated short-circuit making current (peak value) | KA | 50 |
| 8 | Mechanical life | times | 10000 |
| 9 | Rated short-circuit breaking current breaking times | times | 30 |
| 10 | Power frequency withstand voltage ( 1min): (wet) (dry) phase-to-phase, to ground/fracture | KV | 42/48 |
| 11 | Lightning impulse withstand voltage (peak value) phase-to-phase, to ground/fracture | KV | 75/85 |
| 12 | Secondary circuit 1min power frequency withstand voltage | KV | 2 |