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Basic precautions for explosion-proof distribution boxes

Basic precautions for explosion-proof distribution boxes

(Summary description)The entrance and exit of the wires in the explosion-proof distribution box should be arranged at the bottom of the box as much as possible

Basic precautions for explosion-proof distribution boxes

(Summary description)The entrance and exit of the wires in the explosion-proof distribution box should be arranged at the bottom of the box as much as possible

Information

The entrance and exit of the wires in the explosion-proof distribution box should be arranged at the bottom of the box as much as possible, rather than at the top, side, back or door. The power cord entering the switch box cannot be connected with bolts. The inlet and outlet wires of mobile distribution boxes and switch boxes must be rubber insulated cables.


1. The connecting wires in the explosion-proof distribution box should be insulated wires, the joints must not be loose, and the live parts must not be exposed. The distribution box, the metal box of the switch box, the metal electrical installation board, the box body must not be live, the metal base, and the outer casing must be zero-protected. Protective circuits should be connected through terminal blocks.


2. Explosion-proof standard distribution boxes and switch boxes should be installed in naturally ventilated, dry and normal temperature environments. It is strictly prohibited to install in harmful information media such as gas, smoke, steam, liquid management, etc. that have problems and seriously affect damage. It shall not be installed in places susceptible to shock, vibration, liquid splashing and other heat sources; around distribution boxes and switch boxes There should be enough space and passage for both of us to increase the workload at the same time. There should be no stacking of items that hinder operation and maintenance, and there should be no weeds, shrubs, etc.


3. The explosion-proof distribution box and the explosion-proof lighting control distribution box should be set up separately. If they can be placed in the same enterprise distribution box, the power cords and lighting lines should be set up separately.


4. The on-site power distribution management system of the construction enterprise can implement different levels of power distribution, and set up a main distribution box. Under the main distribution box is a distribution box. Under the distribution box is a switch box, and under the switch box is a power distribution box. information equipment.


5. The main distribution box should be located close to the power supply; the distribution box should be located in a place where electrical engineering equipment or load capacity is relatively concentrated in my country; the distance between the distribution box and the switch box must not exceed 30 meters; The switch box shall be powered by the last distribution box of the enterprise, and the horizontal distance between the switch box and the fixed electrical equipment controlled by the switch box shall not exceed 3 meters.


Usually customers may pay attention to the color and surface uniformity of the appearance of explosion-proof distribution boxes. In fact, this is because our distribution box manufacturers have requirements for their own development of distribution boxes. The color of the surface of the distribution box is also what we will base on The actual needs of corporate customers are analyzed for electrostatic spraying.


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