What is the internal structure of the power distribution box and distribution cabinet? The most detailed explanation, learning collection essential!
“Distribution box”, also called distribution cabinet, is the collective name of the motor control center. A distribution box is according to the electrical wiring requirements of the switchgear, measuring instruments, protection appliances, and auxiliary equipment assembled in the enclosed or semi-enclosed metal cabinet or screen width, constituting a low-voltage power distribution device.
The distribution box is data on the sea of parameters, generally constitute low-voltage forest according to the electrical wiring, the requirements of the switchgear, measuring instruments, protection appliances, and auxiliary equipment assembled in the enclosed or semi-enclosed metal cabinet or screen width, constituting a low-voltage distribution box. During normal operation, the circuit can be switched on or off with the help of manual or automatic switches.
Uses of the Distribution Box
Reasonable distribution of electrical energy, convenient to open and close the operation of the circuit. There is a high level of safety protection, can intuitively display the on/off state of the circuit.
Distribution box principle: distribution box is according to the electrical wiring requirements of the switchgear, measuring instruments, protection appliances, and auxiliary equipment assembled in the closed or semi-enclosed metal cabinet or screen width, constituting a low-voltage distribution box. In normal operation, the circuit can be turned on or off with the help of manual or automatic switches. The circuit can be cut off or alarmed with the help of protection appliances during fault or abnormal operation. By means of measuring instruments, various parameters in operation can be displayed, and certain electrical parameters can be adjusted, and prompts or signals can be issued for deviation from the normal working condition.
The power distribution cabinet (box) is divided into a power distribution cabinet (box) and lighting distribution cabinet (box), metering cabinet (box), which is the last level of equipment of the distribution system. The power distribution cabinet is the collective name of the motor control center. A power distribution cabinet is used on the occasion where the load is scattered and the circuit is less. A motor control center is used in the occasion where the load is concentrated and the circuit is more. They distribute the power from a circuit of the upper-level distribution equipment to the nearest load. The equipment at this level should provide protection, monitoring, and control for the load.
A power cabinet is the combination of an electrical control cabinet that provides power to the normal operation of the whole machine, with contactors, frequency converters, high voltage cabinets, transformers, etc.
Power Cabinet Role
- To power equipment (to provide power to the equipment).
- Start and stop operation of electrical equipment (with start and stop button).
- Detection of equipment operation (set signal indicators, with ammeter voltmeter).
- Protection of electrical equipment (circuit breaker) power cabinet is the power distribution cabinet, is dedicated to power equipment (generally refers to the motor) to provide power and control of the distribution cabinet.
10kv high voltage cabinets and 400v low voltage cabinets (regardless of incoming, outgoing, metering, capacitor, contact, pressure change, etc.) can be called distribution cabinets.
The equipment below 400v low-voltage cabinet, belonging to the secondary side of the outgoing load for power facilities (such as fans, motors, pumps, etc.), then it is called power cabinet. And the load for lamps, switches, sockets such equipment is called distribution boxes.
Power distribution box: small power distribution box, the interior contains power switches and insurance devices.
Control box: Small control distribution box, containing power switches/fuses/relays (or contactors) inside, which can be used for specified equipment control, such as motor control, etc.
Power distribution cabinet: The actual distribution box is a larger version of the power distribution box, which can provide a larger power or more channels of power output.
Control cabinet: the actual control box is large-scale, can provide a larger power or more channels of control output, but also can achieve more complex control.
Control Panel: Control cabinet with only the front side, all internal devices are mounted on the panel.