12/24kV Indoor Vacuum Circuit Breaker, AVS7

Send Message Request a Quote

This vacuum circuit breaker is an indoor switch device for three phase AC 50Hz power system with rated voltages of 12-24kV, serving as protection and control unit of power grid equipment and industrial and mining enterprises. The vacuum circuit breaker is applicable to power plants, electrical substations, residential areas, airports, and other sites required for frequent operation of rated operating current, or repeated breaking of short circuit current. This type of vacuum circuit breakers can be installed in moving or fixed type air insulated switchgears.
The vacuum circuit breaker is certified in accordance with IEC60694, IEC6227- 100.

12/24kV Indoor Vacuum Circuit Breaker, AVS7

These vacuum circuit breaker adopt advanced APG technology, the main conductive circuit part and vacuum arc-extinguishing chamber are sealed in the enclosed epoxy resin pole, thus preventing dust from being accumulated on the surface of arc-extinguishing chamber.

Environmental Conditions Altitude: lower than 2000 m; Ambient temperature: up to 40°C, greater than -15°C; Relative humidity: ≤ 95%; Earthquake intensity: ≤ magnitude 8; Installation site: areas without risks of fire, explosion, pollution, chemical corrosion and severe vibration; Technical Parameters

Item	Unit	Parameter
Rated voltage	kV	12	24
Rated frequency	Hz	50	50
Power frequency withstand voltage (1 min)	kV	75/85	125/145
Rated current	A	630, 1250, 2000, 3150, 4000	630, 1250, 2000, 3150, 4000
Rated short-circuit breaking current	kA	25 31.5 40	25, 31.5 40
Rated short-circuit making current(peak)	kA	63 80 100	63, 80, 100
Rated operating sequence		〇-0.3s-C〇-180s-c〇 0-I80s-C0-180s-CO(40kA)	〇-0.3s-C〇-180s-c〇 0-I80s-C0-180s-CO(40kA)
Mechanical endurance	Times	10000	10000