Introduction to the structure of BXM explosion-proof lighting distribution box

Because the construction period of the required distribution cabinet is short, the supply time of the BXM explosion-proof lighting distribution box is urgent, so there is a phenomenon that the quality of the product is not strict, which causes some products to fail soon after they are put into operation. If some types of AC contactors are not put into operation after the switchboard is put into operation, the contactor closing coils will burn out and cannot operate normally. In the manufacturing process, the AC contactor capacity selection is not very suitable. For the same outlet circuit, the same capacity AC contactor is installed, and the imbalance of the three-phase load is not taken into account, and the partial line contactor current level cannot be selected normally. Based on the model number, a current level selection is increased, resulting in the occurrence of AC contactor burnout during summer high temperature season operation. The protective grounding branch of electrical equipment, appliances and non-charged metal parts shall be laid in accordance with the following requirements: the connection is tight and firm, the section of the protective grounding wire is selected appropriately, and the part of the coating that needs to be anticorrosive is evenly leaked, the line direction is reasonable, the color standard is correct, and the coating is applied. Do not contaminate equipment and buildings after brushing.

When wiring the panel, the panel punching should be smooth and burr-free. If it is a metal panel, an insulating maintenance sleeve should be installed. The thickness and size must be determined according to the installation environment. The installation should be securely installed. The vertical deviation should not exceed 3. Mm, BXM explosion-proof lighting distribution box should have no gaps everywhere, and the edges of the panel should be close to the wall. The contact between the box and the building and structure should be coated with anti-corrosive paint. The height of the bottom edge from the ground is generally 1.8M. The neutral line and the maintenance ground line bus should be set separately. When the distribution box is installed on the wall, it should be fixed by the bolts (expansion bolts). The length of the bolts is generally the sum of the depth of the immersion, the thickness of the bottom of the box, the thickness of the nut and the washer, plus the "out of the 5mm" margin". For smaller distribution boxes, you can also pre-bury the wooden bricks at the installation site, and then use wood screws to fix the distribution box or switchboard at the wooden bricks.