The difference between explosion-proof distribution box and ordinary distribution box is

The difference between explosion-proof distribution box and ordinary distribution box is:

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

In terms of structure, components in an ordinary distribution box can be arranged together with convenient wiring. The explosion-proof distribution box is divided into several units and each switch and electrical component must be isolated.

In terms of sealing, the ordinary distribution box does not require strict sealing. The explosion-proof distribution box lid and the box are sealed better. After passing the 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 places without explosion-proof requirements. Explosion-proof distribution box is mainly used in dangerous combustible gas places and explosive places.

On the price, ordinary distribution boxes are cheap. Explosion-proof distribution boxes are expensive, which is generally several times the price of ordinary distribution boxes.

Explosion-proof distribution box:

Explosion-proof distribution box is a type of distribution box with explosion-proof performance. Mainly explosion-proof lighting distribution boxes, explosion-proof power distribution boxes, explosion-proof anti-corrosion distribution boxes. BXM(D) explosion-proof power distribution box is suitable for the use of electrical wiring in flammable and explosive places such as petrochemical installations, petroleum platforms, chemicals, pharmaceuticals, coal, smelting, shipbuilding, military, textiles and so on. Zone 1 and Zone 2 explosive gas atmospheres. 20, District 21, District 22 flammable dust environment.

Instructions:

According to the actual lighting needs of the work site, determine the lighting installation location and method, and then press the lamp to the distance of the 220V power contact point to prepare the appropriate length of the three-core cable (if the use of steel pipe wiring will be the introduction of three-core cable to the lighting installation Department).

First, remove the fixing screw on the wiring chamber and pull out the wiring part of the terminal box; take out the sealing ring and connector (with set screw) from the packing box, insert the cable in turn; then connect one end of the three-core cable separately. Inside the box, mark "L", "N" and ground, press the cable with the pressure card, and fix it with the fastening screw, then tighten the joint, press the seal ring, and tighten the set screw from the side.

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

Finally, connect the other end of the three-core cable to the 220V power supply in accordance with the explosion-proof distribution box.

When replacing the lamp, first cut off the power, then use an Allen wrench to remove the set screw on the housing, use a large screwdriver or other tools to loosen the lamp cover 6 turns, then carefully remove the lamp cover by hand, unscrew the old Replace the bulb with a new one.