Power Distribution Cabinet - Final Equipment Of Power Distribution System

Power distribution cabinets (boxes) are divided into power distribution cabinets (boxes), lighting distribution cabinets (boxes), and metering cabinets (boxes), which are the final equipment of the power distribution system. Power distribution cabinet is a general term for motor control center. The power distribution cabinet is used in situations where the load is relatively scattered and there are few circuits; the motor control center is used in the situations where the load is concentrated and there are many circuits. They distribute the electrical energy of a certain circuit of the upper-level power distribution equipment to the nearest load. This class of equipment shall provide protection, monitoring and control of the load.

They refer to the final equipment of the power distribution system, such as power distribution cabinets, lighting distribution cabinets, and metering cabinets.

(1) The first-level power distribution equipment is collectively referred to as the power distribution center. They are centrally installed in the enterprise's substations and distribute power to subordinate power distribution equipment at different locations. This level of equipment only relies on step-down transformers, so the electrical parameters are required to be high, and the output circuit capacity is also large.

(2) Secondary power distribution equipment is a general term for power distribution cabinets and motor control centers. Power distribution cabinets are used in situations where the load is relatively scattered and there are few circuits.

(3) The final power distribution equipment is collectively referred to as the lighting power distribution box. They are far from the power supply center and are decentralized small-capacity power distribution equipment.

Main switchgear types:

Low-voltage switchgear includes GGD, GCK, GCS, MNS, XLL2 low-voltage distribution boxes and XGM low-voltage lighting boxes.

Main difference:

GCK, GCS, MNS are chests of drawers. GCK and GCS, MNS cabinet drawer push 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 cabinet depth of 800mm, while MNS cabinets can be used as double-sided operation cabinets with a cabinet depth of 1000mm.

Advantages and disadvantages:

The draw-out cabinet (GCK, GCS, MNS) saves space, is easy to maintain, and has many outlet lines, but the cost is expensive;

The fixed cabinet (GGD) has fewer outgoing circuits and occupies a larger area (if the place is small and cannot be used as a fixed cabinet, it is recommended to use a drawer cabinet).