High voltage Switchgear

General GZS1 indoor metal-clad withdrawable switchgear(hereinafter short as switchgear)is a complete power distribution device for 3.6 24kV,3-phase AC 50Hz,single-bus and single-bus sectionalized system. It is mainly used for power transmission of middle/small generators in power plants; power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc.,so as to control, protect and monitor the system. The switchgear meets IEC298,GB3906-91.In addition to be used with domestic VS1 vacuum circuit breaker, it can also be used with VD4 from ABB,3AH5 from Siemens domestic ZN65A,and VB2 from GE, etc.,it is truly a power distribution device with good performance. In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle. Service environment a) Air temperature: Maximum temperature: +40°C; Minimum temperature:-15°C b) Humidity: Monthly average humidity 95%; Daily average humidity 90% . c) Altitude above sea level: Maximum installation altitude: 1000M. d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc. e) No frequent violent shake Main technical specifications No Item Unit Parameter 1 Rated voltage kV 7.2kV, 12 kV,17.5kV,24kV 2 Rated frequency Hz 50/60 3 Rated current A 630,1250,1600,2000,2500,3150,4000 4 Branch busbar Rated current A 630,1250,1600,2000,2500,3150,4000 5 Main busbar Rated current A 630,1250,1600,2000,2500,3150,4000 6 1min Power frequency withstand voltage wet kV 38 50/60 dry kV 48 60/65 7 Lightning impulse withstand voltage kV 75 95/125 8 Rated short circuit breaking current (peak) kA 40/50/63/80/100 9 Short time withstand current(4s) kA 20/25/31.5/40 10 Protection type IP4X for housing Note:*The short circuit capacity should be considered alone.