| Customization: | Available |
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| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Manual Type |
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Description
ZW43-12 series outdoor high-voltage vacuum circuit breakers are outdoor high-voltage switchgear with rated voltage of 12kV and three-phase ac of 50Hz. It is mainly used for load current, overload current and short circuit current of power system. It is suitable for substation, industrial and mining enterprises and urban and rural distribution network for protection and control, especially for the frequent operation of the site and the city network automation distribution network. Meet thefollowing standards: GB/T1984 high voltage ac circuit breaker, GB/T11022 common technical requirements for high voltage switchgear and control equipment, D1402 ac high-voltage circuit breaker ordering technical conditions.
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Item
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Unit
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Data
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Rated voltage
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KV
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12
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Power frequency withstand voltage of 1 min (interelectrode, to ground/fracture)
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KV
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dry 42/wet 34
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Lightning shock resistance (pole to ground)
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KV
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75
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Lightning impact pressure (fracture)
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KV
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85
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Rated frequency
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Hz
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50
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Rated current
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A
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630
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Rated short term withstand current and duration
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KA/4S
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20
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Rated short circuit breaking current
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KA
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20
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Rated short circuit shut-off current
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KA
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50
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Rated peak withstand current
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KA
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50
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Rated operating sequence
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/
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0-0.3s-C0-180s-CO
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Rated number of short circuit current breaking
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Times
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30
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Mechanical life
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Times
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30000
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Accumulative wear thickness of contact
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mm
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3
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Weight
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kg
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70
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Ambient temperature: not higher than 40°, not lower than -10°;
Altitude height: not more than 1000m. If the altitude increases, the rated insulation level increases accordingly;
Relative humidity: the daily average is not more than 95%
Earthquake intensity: no more than 8 level
working places : The place without fire, explosion, serious pollution, chemical corrosion and violent vibration.
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