What is the difference between an explosion-proof distribution box and a common distribution box?

The difference between an explosion-proof distribution box and a common distribution box is:

In terms of shape, the ordinary distribution box is made of iron, and the explosion-proof distribution box is processed after casting or steel plate welding, and has high strength.

In the structure, the components in the ordinary distribution box can be arranged together and the wiring is convenient, and the inside of the explosion-proof distribution box is divided into several units, and each switch and electrical components are to be isolated.

In the sealing, the ordinary distribution box does not have strict sealing requirements. The explosion-proof distribution box cover and the box are well sealed. After strict inspection, the special agency will issue a certificate of conformity and sell it to the factory.

In application, ordinary distribution boxes are generally used in civilian and non-explosion-proof locations. Explosion-proof distribution boxes are mainly used in hazardous flammable gas places and explosive places.

In terms of price, ordinary distribution boxes are cheap. Explosion-proof distribution boxes are expensive, generally several times the price of ordinary distribution boxes.

Explosion-proof distribution box:

Explosion-proof distribution box has a type of distribution box with explosion-proof performance. There are mainly explosion-proof lighting distribution boxes, explosion-proof power distribution boxes, explosion-proof anti-corrosion distribution boxes and so on. BXM(D) explosion-proof distribution box is suitable for use in petrochemical installations, oil platforms, chemical, pharmaceutical, coal, smelting, shipbuilding, military, textile and other inflammable and explosive places. Explosive gas environment in Zone 1 and Zone 2. 20. Combustible dust environment in Zone 21 and Zone 22.

Instructions:

According to the actual lighting needs of the work site, determine the installation position and mode of the lamp, and then prepare the three-core cable of the corresponding length according to the distance from the lamp to the 220V power contact (if the steel pipe is used, the three-core cable is introduced into the steel pipe to the lamp installation. At).

First remove the fixing screws on the wiring cavity, pull out the wiring part of the junction box; take out the sealing ring and connector (with set screws) from the package, and then insert the cable in turn; then connect one end of the three-core cable separately In the box, mark “L”, “N” and grounding. After pressing the cable with the crimping card, fix it with the fastening screw, then tighten the joint, press the sealing ring and tighten the set screw from the side.

Screw the part from step 2 into the steel tube, install the set screw from the side, then insert the lamp body along the guide rail of the junction box, and then tighten the screws on the panel.

After the zui, the other end of the three-core cable is connected to the 220V power supply according to the requirements of the explosion-proof distribution box.

When replacing the lamp, first cut off the power supply, then use the Allen key to remove the set screw on the housing, use a large screwdriver or other tools to loosen the lamp cover 6 times, then carefully remove the lamp cover by hand, and turn the old one down. Replace the bulb with a new one.