General
GCK should be an improved economical type of MNS. The vertical row has no plastic functional panels. The door is fixed on the frame. After the door is opened, the drawer can be pulled out. G--cabinet structure; C--drawable type; K--control center.
Feature
1. The main material of the GCK type low-voltage drawer switchgear cabinet frame is made of expanded steel, which is positioned by angle plates and is connected by bolts without welding structure. The forming size of the parts, the hole size and the equipment interval are modulized. The cabinet is divided into three isolated sections: busbar room, functional unit room and cable room, which can effectively prevent the spread of accidents and facilitate live maintenance.
2. The functional unit of GCK type low-voltage drawer switchgear, with the removal of the drawer, the unit components are completely separated from the conductive vertical busbar, and the electrical equipment can be replaced and repaired safely. The main circuit plug and auxiliary circuit plug of the functional unit have the characteristics of firm insertion, uniform force, and balanced insertion and removal, ensuring reliable connection. The unit compartments are separated by metal plates, and the shutters in the compartments can be automatically closed as the drawer is pulled out, ensuring that the human body cannot touch the live vertical bus and ensuring safety.
3. The horizontal bus bar of GCK type low voltage drawer switch cabinet is installed on the top of the cabinet. It is a three-phase five-wire system or a three-phase four-wire system. The specifications are selected according to the calculated load or specified by the user. The vertical bus bar is halogen-free, non-toxic, and non-toxic. The flammable engineering plastic shell is closed.
Working environment
1. The ambient air temperature should not be higher than +40℃, not lower than -5℃, the average temperature within 24h should not be higher than +35℃ if it exceeds, it needs to be derated and run according to the actual situation;
2. Indoor use: the altitude of the place of use shall not exceed 2000m
3. The relative temperature of the surrounding air should not exceed 50% when the temperature is +40℃. A larger relative temperature is allowed at a lower temperature, such as 90% when the temperature is +20℃. It should be considered that condensation may occur accidentally due to temperature changes. The impact of exposure;
4. When the device is installed, the inclination from the vertical plane does not exceed 5°C, and the entire group of cabinets is relatively flat (in accordance with the GBJ232-82 standard);
5. The device should be installed in a place where there is no severe vibration and impact, and where the electrical components are not corroded;
6. If the user has special requirements, it can be resolved through consultation with the manufacturer.
Technical Parameters
Insulation voltage: AC 660-1000V
Working voltage: AC 380-660 V
Frequency: 50Hz
Max current for feeder-circuit: 3150A
Max current for drawer-circuit: 3150A
Max capacity for control motor: 320KW
Horizontal bus peak withstand current (0.1S): 63/105/176KA
Horizontal busbar short-time withstand current (1S): 30/50/80/100 KA
Vertical bus peak withstand current (0.1S): 63/105 KA
Vertical busbar short-time withstand current (1s): 30/50 KA
Rating power frequency withstand voltage: 2500V(1min)
Secondary power frequency withstand voltage: 2500V (1min)
Protection level: IP30/40
