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:
The choice of cabinet:
1, Materials is divided into cold rolled steel or angle iron (for welding cabinet from materials and low cost of such materials, high strength, general-purpose type); deposited aluminum zinc steel or galvanized steel (used to assemble the cabinet); stainless steel plate (non-conducting magnetic); aluminum ((permeability); SMC composite unsaturated materials.
2,From installation type:indoor and outdoor.
Cabinet main electrical components brand choice:
1,A higher price: ABB, Schneider, United States AB, Mitsubishi, Siemens, Omron, Muller, Weidmuller, Phoenix, Hager, Legrand, etc..
2, Moderately price: Changshu, the Long March, China through Shanghai Wuchang, Shihlin, refinement and so on.
3, Low price: Tengen, and Chint, West Germany, the people's electrical Watertown, Taian, river, etc..
Cabinet auxiliary components
Copper busbar connections, aluminum row of connection wires connected etc.
Model implication
Classification of the switchgear
1, Electrical cabinet
2, The bus contact cabinet
3, The fed cabinets
4, The motor control cabinet
5,Power switching cabinet
6,The power factor compensation cabinet
Structure
Cabinet made by steel sheet metal forming, the use of 20mm for the modulus of the standardized design, the versatility of structural components, with high mechanical strength;
Main busbar room upper part is cabinets, the front part is electrical room, the rear part is the cable in/out chamber, steel or insulation board exists in each room for isolation in order to ensure safe usage;
The cabinet structure parts have the surface protective layer of galvanized or electrostatic powder coating that
reliable quality and beautiful color;
Mechanical interlock: the MCC cabinet drawer door of the chamber and the circuit breaker or isolating switch operating handle has a mechanical interlock, only the handle to door in the breaking of the location can be opened in order to ensure safety interlocking mechanism with the unlocking device, operating electrician necessary may open the room door by unlocking device in the power situation to view the drawer internal;
By the electric switch, contact switch, and MCC cabinet drawer has three positions: ON position and test position and off position;
The top of the switchgear can be fitted by the power or contact needs bus bridge, the bus bridge from the Roof height and the length of the bus bridge according to user needs by the manufacturer supporting the supply.
Dimensions