ZW32-12 type miniaturization of outdoor high vacuum circuit breaker (hereinafter referred to as the circuit breaker) is three-phase ac frequency 50Hz, rated voltage of 7.2-12kV outdoor high voltage switch equipment . Circuit breaker meet the national GB1984 the high-voltage ac breaker and professional standard JB3855 “3.6~40.5 kV voltage vacuum circuit breaker outdoor exchange” and relevant IEC standard. For industrial enterprise, power plants and substation of electrical equipment for control and protection with, and rural power grid frequent operation place. Circuit breaker has repeatedly open circuit and fast reclose ability.
1,Environmental temperature: no high than 40℃, no less than -40℃.
2,Air relative humidity: day average no greater than 95%, on average less than 90%.
3,The altitude does not exceed 2000m.
4,Wind pressure not more than 700Pa(equivalent to wind speed 34m/s)
5,Seismic intensity not more than eight level.
6,No fire, explosion, serious filthy, chemical corrosion and violent vibration of places.
7,If the customers have other special requirements, can be in order to put forward , our company can offer most satisfied.
Rated insulation level
1min withstand voltage
Lightning impulse withstand voltage(peak)
630 400 200
Rated break current on shorting
20 16 12.5
Rated operating sequence
Open circuit times of rated short dropout current
Rated short circuit making current
Rated peak withstand current
Rated shorting withstand current
Rated duration of short-circuit
Opening time(shunt trip)
Max operating voltage
Rated operating voltage
Min. operating voltage
Total breaking time
Rated input power of energy storge motor
Rated operating voltage and secondary circuit rated voltage