Explosion-proof box temporary electricity operation requirements

Explosion-proof box temporary electricity operation, electrical equipment inside the box should be first installed in non-wood flame-retardant insulation electrical installation board, and then the whole fastened in the distribution box box.

1 explosion-proof box external cable to the requirements

The inlet and outlet of the wire in the box shall be located on the bottom surface of the box and must not be placed on the top, side, rear or door of the box. The entry and exit of the distribution box and switch box shall be equipped with fixed line cards. Insulation cables shall be added to the inlet and outlet cables and bundled and stuck on the box. They shall not be in direct contact with the box. The rubber-sheathed insulated cables shall be used for the incoming and outgoing cables of the mobile distribution box and switch box, and no joints shall be provided.

2. Placement of explosion-proof box position

It must not be installed in locations that are susceptible to impact by foreign solids, strong vibration, liquid intrusion, and heat source baking. Otherwise, it must be treated with special protection. The fixed distribution box should be fenced, and there should be rain and flood prevention measures. It shall be installed in dry, ventilated and normal temperature places; it shall not stack any articles that impede operation or maintenance; it shall not be installed in gas, smoke, steam, liquid and other harmful media that have serious damage effects.

3. Explosion-proof box component wiring requirements

The connection wires in the box must be insulated with copper conductors. The color code of the wire insulation shall be arranged and arranged neatly according to the requirements of the code; the wire branch connector shall not be crimped by bolts, and shall be welded and insulated and shall not be exposed.

4. Shell manufacturing requirements

Explosion-proof box metal box, electrical normally uncharged metal base, shell, etc. must be electrically connected through the PE wire terminal board and PE wire, metal box door and metal box must be made by braided soft copper wire to make electrical connections, the box should be outside The safety warning labels shall be applied and the uniform number shall be designed in accordance with the temporary power construction organization. The power distribution box that is stopped for use shall be cut off from power supply, and the door shall be locked; the box shall be coated with a safety warning sign and shall be numbered in accordance with the design of the Lin Power Construction Organization. The power distribution box used should be cut off and the door locked.

5 explosion-proof box shell process requirements

The appearance of the cabinet should be complete, sturdy, rainproof and dustproof. Doors shall not be of the open type, and the insulation measures to prevent contact with the live parts of the box shall be made of cold-rolled steel plates or high-quality insulating materials. The thickness of the steel plates shall be 3.5 to 4.0 mm, wherein the thickness of the switch box steel plates shall not be less than 3.5 Mm, the thickness of the distribution box box stencil shall not be less than 4.0mm, the surface of the box shall be treated with anti-corrosion