Installation requirements of power cabinet:

(1) The installation height shall not exceed 1000m above sea level;

(2) The temperature of surrounding medium is not higher than 40 ℃ and not lower than - 20 ℃;

(3) The relative humidity of the air shall not exceed 85%;

(4) There is no conductive dust and gas place that can corrode metal and destroy insulation;

(5) Places without explosion danger;

(6) There is no severe vibration and turbulence, and the vertical inclination is not more than 5 ° It's a good place.

(7) After the treatment required by the wet tropical zone, the power box can be used in the area where the relative humidity of the air is not more than 95% and there are condensation and mold.

Installation method of power cabinet:

Usually, a base is made of 10 ᦇ channel steel, the base is welded on the steel plate (such as 100 * 100 * 6) embedded in the foundation, and then the power cabinet is fixed on the base with bolts or welding, or it can be directly installed on the bolts embedded in the foundation. What are the requirements for the power cabinet installation? There are standard installation drawings.

Maintenance regulation for control cabinet of low voltage distribution cabinet: high and low voltage cabinet

Carry out sectional maintenance, first maintain the security load section and stop the security load power. If the load is still supplied with the mains power, disconnect the air switch for the security load mains power, put the generator selection switch in the "stop" position, remove the positive and positive pole wires of the battery, mark the parts to prevent the generator from sending power, check whether there is deformation at the bus joint, whether there is discharge black mark, and tighten the connecting bolts, If the screw lattice is rusty, replace the second son to ensure the connection is tight, check whether the insulation on the bus is loose and damaged, remove the handle of the main air switch from the power distribution cabinet, check whether the main contact of the gold has traces of acetylene melting, check whether the arc extinguishing cover is burned black and damaged, tighten the wiring screws, clean the dust in the cabinet, and test the closing of the machine.

Take out each separate cabinet from the small cabinet, tighten the terminals, check the installation and wiring of current transformer, ammeter and watt hour meter, and check the flexibility and reliability of handle operating mechanism. Tighten the air to rescue the Zhuangcheng's incoming and outgoing lines, and clean the dust in the switch school and the outgoing line behind the distribution cabinet. When maintaining the capacitor cabinet, disconnect the main switch of the capacitor first, Discharge the capacitors to the ground one by one with wires more than 10 mm, then check whether the contactor, capacitor wiring screw and grounding device are in good condition, check whether the capacitor is bulging, and clean the dust in the cabinet with a vacuum cleaner.