Welding and protection requirements of distribution box

The distribution box has the characteristics of small size, simple installation, special technical performance, fixed location, unique configuration function, not limited by the site, relatively common application, stable and reliable operation, high space utilization, less land occupation and environmental protection effect.

The welding and bolt connection of the distribution box shall be firm, and the weld joint shall be uniform, bright and clean, free of defects such as welding skin, weld through, air hole, etc.; the bolt connection shall have flat and spring washer. The internal parts and opening edges of the distribution box shall be flat and smooth without burrs and cracks.

The movable parts of the distribution box can be opened and closed flexibly. During the opening and closing process, the coating or coating shall not be damaged. The opening angle shall not be less than 90 degrees. The door lock adopts the concealed lock. The door lock shall be firm and reliable, and there shall be no obvious shaking after the lock. The door hinge adopts the metal chrome plating. When the door length is more than 1.2m, three hinges shall be installed, and when it is less than 1.2m, two hinges can be used. The hinge shall have sufficient bearing capacity When bearing four times (not less than 10kg), no deformation shall be caused.

The protection requirements of the distribution box; the distribution box shall be able to operate under the condition of three-level pollution, that is, the protection level of the distribution box shall reach IP3X. All insulation in the distribution box shall be self extinguishing material. All steel plates and section steel used for box body shall be degreased, derusted and phosphatized before spraying, and other metal parts shall have anti-corrosion ability, otherwise anti-corrosion measures shall be taken.