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ZW32 Outdoor AC high voltage vacuum circuit breaker

ZW32-12 outdoor AC high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with rated voltage of 12kV，24kV，40.5kV and three-phase AC 50Hz. It is mainly used to break and close the load current, overload current and short circuit current in the power system. It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, and places where rural power grids are frequently operated. The circuit breaker has the characteristics of small size, light weight, anti-condensation and maintenance-free, and can adapt to harsh weather conditions and dirty environment.

parameters

Technical Information

Technical Specification
Rated voltage	kV	12	24	40.5
Rated frequency	Hz	50	50	50/60
Rated current	A	630	630	1250/1600
Rated short-circuit breaking current	kA	20	25	25/31.5
Rated peak withstand current (peak)	KA	50	63	63
Rated short-time withstand current	kA	20	25	63/80
Rated short circuit closing current (peak)	kA	50	63	63/80
Mechanical life	Times	10000	10000	10000
Rated short-circuit breaking current breaking times	Times	≥30	≥30	30
Power frequency withstand voltage (1min): (wet) (dry) phase, ground / fracture	kV	42/48	52;65/79	80 95/95
Lightning impulse withstand voltage (peak) phase to ground, ground / fracture	kV	75/85	125/145	185
Secondary circuit 1min power frequency withstand voltage	kV	2	2	2

Overall and installation dimensions

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ZW32 Outdoor AC high voltage vacuum circuit breaker