Gck Series Low-voltage Withdrawable Switchgear

GCK Low-voltage withdrawable switchgear used in power plants, metallurgical rolling, petrochemical, light industry and textiles, ports, building hotels and other places as the AC three-phase four-wire or five-wire system, voltage 380V, 50HZ power distribution and motor control purposes.
Implementation of standards
GCK goes through a comprehensive type tests, is an advanced low-voltage switchgear which assembled by the manufacturer and it is consistent with:
The national standard GB7251 - 87 low voltage switchgear;
Professional the standard ZBK36001 - 89 withdrawable switch equipment;
International standard IEC439.
Use of the environment
1, An ambient air temperature is not higher than +40 ℃ and less than a 5℃ , average temperature is not higher than +35℃ within 24 hours;
2, The relative humidity does not exceed 50% when the maximum temperature is +40 ℃ but at lower temperatures allows relatively high humidity , such as +20 ° C 90%;
3, The air is clean, non-corrosive and explosive gases, non-conductive and dust can damage the insulation;
4, Without shaking and shock, vibration occasions, mounted vertically, the tilt should not exceed 5 degrees;
5, The altitude is not over 2000 meters;
6,The switchgear is suit for the following temperature transportation and storage: 25℃ to +55 ℃ , in a short period of time (not more than 24 hours) does not exceed +70℃ ;
7, If above conditions can not meet user's request ,should consult with the manufacturer.
The main technical parameters
1,Rated insulation voltage 660V;
2.Rated working voltage 380V;
3,The auxiliary circuit rated operating voltage AC 380V, 220V;
4,Busbar rated current: 1000A, 1250A, 1600A, 2000A, 2500A, 4000A;
5,The bus bar rated short time withstand current: 50KA (rms) 1 seconds;
6,The bus Rated peak withstand current: 105KA;
7,Branch busbar rated current: 630A, 800A;
8,Branch busbar rated short time withstand current: 30KA, 50KA (rms) of 1 second;
9,Branch bus rated fixed peak withstand current: 63KA, 105KA;
10,The housing enclosure protection class:IP40.
Selection and configuration
In general, unit selection and configuration of an electric switching equipment is to begin from the following aspects: