China 11kv 12kv Metal Enclosed Sf6 Gas Insulated Electrical Switchgear Gis

11kv 12kv metal Enclosed Sf6 Gas Insulated Electrical Switchgear Gis
The GIR-12 type intelligent switchgear is manufactured by our company with independent intellectual property rights, which is based on the development demands of smart grid and adopts the design concept of being "intelligent, energy-saving, environmentally-friendly and maintenance-free". It integrates such functions as measurement, control, protection and communication etc, with high intelligent degree. This product is suitable for 50Hz, 12kV electric power systems, extensively applied to industrial and civil cable ring networks and power supply terminal projects; it is a top choice to guarantee safe, reliable, economical and efficient operation of the power network.
IEC60044-1, IEC60060, IEC60068-2, IEC60099-4, IEC60255-27, IEC60270, IEC60280.1, IEC60529, IEC60694, IEC60815-1, IEC60870-5-101, IEC61000-4, IEC61243-5, IEC62271
Major Technical Parameters are shown below:

Rated voltage12kVRated current630ARated frequency50HzRated short-duration (1 min) power frequency withstand voltage42/48kVRated short-circuit breaking current20kARated short-duration withstand current (4s)20kARated lightning impluse withstand voltage(to earth/break)75/85kVRated short-circuit making current (peak value)50/63kARated peak withstand current50kARated load breaking current630AMechanical service life of vacuum circuit breaker10000TimesRated close circle breaking current630A5% rated load open current31.5ARated transfer current1700A