GCK low-voltage withdrawable switchgear
Short Description:
■ Product IntroductionThe GCK low-voltage withdrawable switchgear is widely used in power plants, metallurgical rolling mills, petrochemicals, light industry and textiles, port terminals, high-rise buildings, and other places as distribution and centralized control of electric motors in AC three-pha …
Product details
■ Product Introduction
The GCK low-voltage withdrawable switchgear is widely used in power plants, metallurgical rolling mills, petrochemicals, light industry and textiles, port terminals, high-rise buildings, and other places as distribution and centralized control of electric motors in AC three-phase four-wire or five-wire power supply systems with a voltage of 380V, 660V, a frequency of 50Hz, and a rated current of 5000A and below.
The GCK has undergone comprehensive type testing and obtained CCC certification. It is an assembled high-grade low-voltage switchgear, designed to comply with the following standards:
National Standard GB7251.1-2005 "Low-voltage switchgear and controlgear assemblies"
International Standard IEC60439.1-1992 "Low-voltage switchgear and controlgear assemblies"
■ Model Meaning
■ Operating Conditions
◇ Ambient air temperature not higher than +40°C, not lower than -5°C, and the average temperature within 24 hours not higher than +35°C;
◇ Relative humidity does not exceed 50% at the highest temperature of +40°C, and higher relative humidity is allowed at lower temperatures, such as 90% at +20°C;
◇ Clean air, no corrosive or explosive gases, no conductive dust or dust that can destroy insulation;
◇ No significant vibration or impact, vertically installed, inclination should not be greater than 5 degrees;
◇ Altitude not exceeding 2000 meters;
◇ The switchgear is suitable for transportation and storage at the following temperatures: -25°C to +55°C, and for short periods (not exceeding 24 hours) not exceeding +70°C;
◇ If the user cannot meet the above conditions, they should consult with the manufacturer.
■ Main Technical Parameters
◇ Rated insulation voltage: 660V/1000V
◇ Rated working voltage: 400V/660V
◇ Rated working voltage of auxiliary circuit: AC 380V, 220V, DC 110V, 220V
◇ Rated current of main busbar: 1000A, 1250A, 1600A, 2000A, 2500A, 3200A, 4000A, 5000A
◇ Rated short-time withstand current of main busbar: 50kA, 80kA (RMS) 1 second
◇ Rated peak withstand current of main busbar: 105kA/0.1s, 140kA/0.1s, 176kA/0.1s
◇ Rated current of branch busbar: 630A, 1000A, 1250A, 1600A
◇ Rated short-time withstand current of branch busbar: 30kA, 50kA (RMS) 1 second
◇ Rated peak withstand current of branch busbar: 63kA, 105kA/0.1s
◇ Enclosure protection class: IP30, IP40
◇ Busbar arrangement: Three-phase four-wire system, three-phase five-wire system
