This device is indoor metal armored draw-out switchgear (hereinafter referred to as switchgear), which is a complete distribution device of 3.6-12kv three-phase ac 50Hz single bus segmental system.It is mainly used in power plants, small and medium-sized generators, industrial and mining enterprises, and secondary substations of electrical system to receive electricity, send electricity and start large high-voltage motors.Implement control protection, monitoring, the switchgear meet DL 404-2007, IEC 60298, GB3906-2006 standard requirements, prevent the loading of push-pull circuit breaker handcart, prevent or circuit breaker, to prevent the earthing switch is in the closed position close circuit breaker, avoid straying into charged across the room, avoid mistake when charged and earthing switch interlock function, as well as with VS1 vacuum circuit breaker, but also with ABB VD4 vacuum circuit breaker.It is actually a kind of distribution device with superior performance.
Operating environmental conditions
A upper limit of ambient air temperature E, +40℃;Lower limit, - 10 ℃
B altitude: ≤1000M
C relative environmental humidity: the daily average relative humidity is no more than 95%, and the monthly average relative humidity is no more than 90%;
D earthquake: intensity does not exceed 8℃
E. The surrounding air shall be free from obvious pollution such as corrosive or combustible gases, 7.1< steam, etc.
F. Without severe pollution and frequent violent vibration, the design of harshness meets the requirements of category 1 under severe conditions.
Special working conditions:
* in case of use in excess of the normal environmental conditions specified in GB 3906-2006, it shall be negotiated between the user and the manufacturer.
Maximum working voltage（KV）
Power frequency withstands voltage（kV)
Shock withstand electrical voltage（kV)
Rated thermal stability current（队／4s)
Rated dynamic steady current（kA)
Rated short circuit breaking current（kA)
Rated short-circuit switching current（kA)
Rated voltage (V) dc for switching and auxiliary circuits
Maximum working voltage
Rated insulation level
1min Power frequency withstand voltage
Lightning shock withstand voltage
630, 1250, 1600,2000,2500,3150
Rated short-circuit breaking current (valid value)