GCK low-voltage withdrawable switchgear
Short Description:
GCK low-voltage draw-out switchgear is widely used in power plants, metallurgical steel rolling, petrochemical industry, light industrial textiles, ports, docks, buildings, hotels and other places as AC three-phase four-wire or five-wire system, voltage 380V, 660V, frequency 50Hz, rated current 5000A and below for power distribution and motor centralized control in power supply systems.
Product details
Product overview
GCK low-voltage draw-out switchgear is widely used in power plants, metallurgical steel rolling, petrochemical industry, light industrial textiles, ports, docks, buildings, hotels and other places as AC three-phase four-wire or five-wire system, voltage 380V, 660V, frequency 50Hz, rated current 5000A and below for power distribution and motor centralized control in power supply systems.
GCK is an advanced low-voltage switchgear assembled after comprehensive type test and CCC certification. Its design meets the following standards:
National Standard GB7251.1-2005 《Low Voltage Complete Switchgear》International Standard IEC60439.1-1992 《Low Voltage Switchgear and Control Equipment》
Normal operating environment
◇ Ambient air temperature is not higher than +40℃ , not lower than -5℃ , and the average temperature within 24 hours is not higher than+35℃ ;
◇ The relative temperature shall not exceed 50% at the highest temperature +40℃ , and higher relative temperature is allowed at lower temperature, such as 90% at +20℃ .
◇ The air is clean, free of corrosive and explosive gases, and free of conductive and insulating dust:
◇ When there is no significant shaking and impact vibration, it shall be installed vertically with an inclination of not more than 5.
◇ The altitude shall not exceed 2,000 meters;
◇ Switchgear is suitable for transportation and storage at the following temperatures:-25℃ ~+55℃ , within a short period of time (not more than 24 hours) not more than+70℃ ;
◇ The user shall negotiate with the manufacturer if the above conditions cannot be met.
Main technical parameters
◇ Rated isolation voltage 660V/1000V
◇ rated operating voltage 400V/660V
◇ Rated working voltage of auxiliary circuit: 380V and 220V AC, 110V and 220V DC
◇ Bus rated current: 1000A, 1250A, 1600A, 2000A, 2500A, 3200A, 4000A, 5000A
◇ rated short-term withstand current of bus: 50kA, 80kA (effective value) for 1 second
◇ Bus rated peak withstand current: 105kA/0.1s, 140kA/0.1s, 176kA/0.1s s.
◇ rated current of branch bus: 630A, 1000A, 1250A, 1600A
◇ rated short-term withstand current of branch bus: 30kA, 50kA (rms) for 1 second
◇ rated peak withstand current of branch bus: 63kA, 105kA/0.1s
◇ Shell protection level: IP30, IP40
◇ Bus bar setting: three-phase four-wire system and three-phase five-wire system
◇ Operation mode: local, remote and automatic
