Low Voltage Withdrawable Switchgear GCK
Short Description:
PurposeGCK low-voltage withdrawable switchgear is widely used in power plants, metallurgy and steel rolling, petrochemical, light industry and textile, ports and docks, buildings and hotels, etc. It is used for distribution and centralized control of motors in power supply systems with AC three-phas …
Product details
Purpose
GCK low-voltage withdrawable switchgear is widely used in power plants, metallurgy and steel rolling, petrochemical, light industry and textile, ports and docks, buildings and hotels, etc. It is used for distribution and centralized control of motors in power supply systems with AC three-phase four wire or five wire system, voltage of 380V, 660V, frequency of 50Hz, rated current of 5000A and below.
GCK is an advanced low-voltage switchgear that has undergone comprehensive type testing and obtained CCC certification. It is assembled and designed to meet the following standards:
National standard GB7251.1-2005 "Low voltage complete switchgear" International standard IEC60439.1-1992 "Low voltage switchgear and control equipment"
Normal Usage Conditions
◆ The ambient air temperature shall not exceed+40 ℃ , not be lower than -5 ℃ , and the average temperature within 24 hours shall not
exceed+35 ℃ ;
◆ The relative temperature should not exceed 50% at the highest temperature of+40 ℃ , and a higher relative temperature is allowed at lower temperatures, such as 90% at+20 ℃ ;
◆ Clean air, no corrosive or explosive gases, no conductive or dust that can damage insulation:
In situations where there is no significant shaking or impact vibration, when installed vertically, the inclination should not exceed 5 degrees;
◆ Altitude not exceeding 2000 meters;
◆ The switchgear is suitable for transportation and storage at temperatures ranging from -25 ℃ to+55 ℃ , and within a short period of time (not exceeding 24 hours) not exceeding+70 ℃ ;
When users are unable to meet the above conditions, they should negotiate 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 busbar: 1000A, 1250A, 1600A, 2000A, 2500A, 3200A, 4000A, 5000A
Rated short-term withstand current of busbar: 50kA, 80kA (effective value) for 1 second
Rated peak withstand current of busbar: 105kA/0.1s, 140kA/0.1s, 176kA/0.1s
Rated current of branch busbar: 630A, 1000A, 1250A, 1600A
Rated short-term withstand current of branch busbar: 30kA, 50kA (effective value) for 1 second
Rated peak withstand current of branch busbar: 63kA, 105kA/0.1s
Shell protection level: IP30, IP40
Bus settings: three-phase four wire system, three-phase five wire system
Operation mode: local, remote, automatic
