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Product overview
Series vacuum circuit breakers are high-voltage outdoor switching equipment with rated voltage three-phase AC, mainly used to switch on and off rural power grids. Load current, overload current, and short-circuit current of urban power grids and small power systems. The overall structure of this product is a three-phase common box type three-phase vacuum arc extinguishing chamber placed in a metal box, using insulating materials for inter-phase insulation and ground insulation, with reliable performance and high insulation strength. Xi'an Tianzheng Electric Power Technology Co., Ltd. Supply/Spot Pictures Spot Price
It is called a combination circuit breaker that is composed of a circuit breaker and an isolation knife and can be used as a sectional switch.
The operating mechanism of this series of products is a type spring energy storage operating mechanism, which is divided into electric and manual.
Technical parameters
Serial number name unit data
Rated voltage
Rated current
Rated short-circuit load breaking current
Rated short-circuit closing current (peak value)
/> Rated peak withstand current
Rated short-time withstand current
Rated insulation level power frequency withstand voltage (dry type)
Lightning impulse withstand voltage (peak)
Rated operating sequence Opening and closing
Mechanical life times
Rated short-circuit breaking current times
Rated closing voltage of the operating mechanism
Rated opening current of the operating mechanism
Contact opening distance
Overtravel (contact spring compression length)
Different phases of three-phase opening and closing
Contact closing bounce time
Average opening speed/
Average closing speed/
Opening time at the highest operating voltagebr/> At the lowest operating voltagebr/> Closing timebr/> Main circuit resistance of each phase
Allowable cumulative friction thickness of the moving and static contacts
/Spot pictures and spot prices/Spot pictures and spot prices
ZW8-12/630-20 spot picture ZW8-12 spot price