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ZW32-type outdoor high voltage vacuum circuit breaker for rated voltage 12kv three-phase AC 50Hz outdoor distribution equipment applies to power distribution system substation and industrial and mining enterprises to do to protect and control, and rural power grid frequency operation premises. It is mainly used for breaking and closing the power system load current, overloads current and short-circuit current.
Vacuum interrupter outdoor insulation using silicon rubber sleeves, long life, high reliability and good weather resistance, easy to transport, cost-effective, operating organizations to adopt a small, high reliability spring operating mechanism, simple structure, mechanical life of up to 10,000 times.
The circuit breaker can be with controller as recloser, to achieve remote control, telemetry, remote, remote adjust, “four remote” features.
| No | Item | Unit | Value | |||
| 1 | Rated voltage | kV | 12 | |||
| 2 | Rated insulation level | 1min power frequency withstand voltage | Dry | 42 | ||
| Wet | 34 | |||||
| Lightning impulse withstand voltage (peak) | 75 | |||||
| 3 | Rated current | A | 630;400;200 | |||
| 4 | Rated short-circuit breaking current | kA | 20;16;12.5 | |||
| 5 | Rated operating sequence | O-0.3s-CO-180s-CO | ||||
| 6 | Rated short-circuit breaking current breaking times | times | 30 | |||
| 7 | Rated short-circuit closed current (peak) | kA | 50 | |||
| 8 | Rated peak withstand current | kA | 50 | |||
| 9 | Rated short-time withstand current | kA | 20 | |||
| 10 | Rated short-circuit duration | s | 4 | |||
| 11 | Opening time (magnetic releasing) | Max operating voltage | ms | 23~45 | ||
| Rated operating voltage | ||||||
| Min operating voltage | 23~60 | |||||
| 12 | Closing time | ms | 25~45 | |||
| 13 | Total break time | ms | ≤100 | |||
| 14 | Arcing time | ms | ≤20 | |||
| 15 | Mechanism life | times | 1000 | |||
| 16 | Storage energy motor rated input power | W | 40 | |||
| 17 | Rated operating voltage and auxiliary circuit rated voltage | V | DC220,110,24 | |||
| AC220,110,24 | ||||||
| 18 | Storage energy time on rated voltage | s | ≤10 | |||
| 19 | Over-current tripper | Rated current | A | 5 | ||
| Tripping current precision | % | ±10 | ||||
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