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ZW32-12 outdoor vacuum circuit breaker

Product Overview
ZW32-12 outdoor vacuum circuit breaker is a three-phase AC 50Hz outdoor high voltage switch equipment, mainly used in the 10kV outdoor distribution system of the rural and urban network as the open or close load current, the overload current and the short circuit current, and can also be used in other similar places. ZW32-12 outdoor vacuum circuit breaker meet the national GB 1984-2003, IEC62271-100 "AC high voltage circuit breaker" and GB/T11022-1999 "Common technical requirements for high voltage switchgear and control equipment standards".

Normal ambient condition
1. Ambient air temperature: -40°C~+40°C;
2. Altitude: no more than 2000m;
3. The ambient air may be polluted by dust, smoke, corrosive gases, steam or salt fog;
4. The wind speed does not exceed 34m/s (equivalent to 700Pa on a cylindrical surface);
5. Vibration or ground motion from the switchgear and control equipment is negligible;
6. Pollution Grade: Grade III;
7. Outdoor vacuum circuit breaker can be used in the normal use conditions different from the above regulations. At this time, the user should consult with the manufacturer and get the same opinion.
8. If beyond the above normal use conditions, the user will negotiate with the manufacturer.

Main technical parameters
Rated voltage: 12kV
Power frequency withstand voltage (1min): 42kV
Lightning impulse withstand voltage: 75kV
Rated frequency: 50Hz
Rated current: 630, 1250A
Rated breaking current: 12.5, 16, 20kA
Rated short circuit making current (Peak): 31.5, 40, 50kA
Rated peak withstand current: 31.5, 40, 50kA
Rated short time withstand current: 12.5, 16, 20kA
Rated short circuit duration: 4s
Breaking times of rated short circuit current: 30 times
Rated operation sequence: O-0.3s-CO-180s-CO
Mechanical endurance: 10000 times
Rated current of overcurrent release: 5A
Secondary circuit 1min power frequency withstand voltage: 2000V



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