First, the role of power distribution cabinet
1, to the power supply equipment (power supply to the device);
2, start and stop operation of electrical equipment (with start and stop button);
3, the operation of testing equipment (set signal indicator, a current meter voltmeter);
4, protection of electrical equipment (circuit breaker) Power cabinet is the power distribution cabinet, is designed to power equipment (generally refers to the motor) to provide power and control of the power distribution cabinet.

Second, the power distribution cabinet Scope:
Suitable for industrial and civil construction for the exchange frequency of 50Hz, rated voltage 380V and below, three-phase four-wire, three-phase five-wire power system power distribution, lighting distribution and motor control.

Third, the power distribution cabinet types:
1, according to the applicable premises power cabinet can be divided into outdoor, indoor two
2, according to the system capacity and switch size, the cabinet width of 600, 700, 800, 1000mm four, the cabinet depth of a 400mm, box height of 1600, 1700, 1800, three.

Fourth, the power distribution cabinet installation conditions
(1) the installation height does not exceed 1000 meters above sea level;
(2) the surrounding medium temperature is not higher than +40 ℃, not less than -20 ℃;
(3) air relative humidity of not more than 85%;
(4) there is no conductive dust and enough to corrode the metal and damage the insulation of the gas sites;
(5) there is no danger of explosion;
(6) no severe vibration and bumps and vertical tilt of not more than 5 ° place.
(7) after the treatment of the requirements of the tropical zone, power box can be applied to the relative humidity of not more than 95%, there are condensation and mold the existence of areas.