Installation requirements for power distribution cabinets
Sep 03, 2021
Main switch cabinet type:
Low-voltage switch cabinets include GGD, GCK, GCS, MNS, XL low-voltage distribution boxes, etc.
The main difference:
GGD is a fixed type, and GCK, GCS, and MNS are drawer cabinets. GCK and GCS, MNS cabinet drawer advancement mechanism is different;
The main difference between GCS and MNS cabinets is that GCS cabinets can only be used as single-sided operation cabinets with a depth of 800mm, while MNS cabinets can be used as double-sided operation cabinets with a depth of 1000mm.
Advantages and disadvantages:
Withdrawable cabinets (GCK, GCS, MNS) are less space-saving, easy to maintain, and have more lines, but they are expensive;
The fixed type cabinet (GGD) has fewer outgoing loops and occupies a larger area (if the space is too small, it is recommended to use a drawer cabinet).
The installation requirements for the distribution board (box) are: the distribution board (box) should be made of non-combustible materials. Open-type switchboards can be installed in production sites and offices where the risk of electric shock is small. Closed cabinets should be installed in processing workshops, casting, forging, heat treatment, boiler rooms, wood workshops and other places where the risk of electric shock is high or the working environment is poor. In dangerous workplaces where conductive dust or flammable and explosive gases are generated, enclosed or explosion-proof electrical facilities must be installed. The electrical components, meters, switches and circuits of the distribution board (box) should be neatly arranged, firmly installed, and easy to operate. The bottom surface of the floor-mounted board (box) should be 5-10 mm higher than the ground. The height of the center of the operating handle is generally 1.2-1.5m. There is no obstacle within the range of 0.8-1.2m in front of the board (box). The protection line is connected reliably, and no bare live body is exposed outside the board (box). The electrical components that must be installed on the outer surface of the board (box) or on the distribution board must have reliable shields.
