Description

ZW10-12 outdoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) for a period of 12kV, rated voltage of the three-phase ac 50 Hz outdoor distribution equipment, mainly used in site, the city network, railway, port and mine and power distribution system, especially suitable for outdoor overhead line, open and close of electric power system load current, overload current and short circuit current, switching and protection of power grids.

Model and meanings

Main technical parameters

No	Item	Unit	Data
1	Rated voltage	kV	12
2	Rated current	A	630 1250
3	Rated frequency	Hz	50
4	Rated short circuit breaking current	kA	12.5	16	20
5	Rated peak withstand current (peak)	kA	31.5	40	50
6	Rated short term withstand current (4s)	kA	12.5	16	20
7	Rated short circuit shut-off current (peak)	kA	31.5	40	50
8	Rated number of short circuit breaking current	Times	30
9	Mechanical life	Times	10000
10	Power frequency withstand voltage (1min)	kV	42
11	Lightning shock withstand voltage (peak)	kV	75
12	Withstand voltage power frequency of secondary loop tor 1min	kV	2
13	Weight	kg	150

Outline and mounting dimensions

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High Voltage Vacuum Circuit Breaker

Outdoor high voltage vacuum circuit breaker ZW10-12