Distribution box manufacturers-problems that may be encountered in the installation of distribution boxes-Dinghong Electric Power

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Distribution box manufacturers-problems that may be encountered in the installation of distribution boxes

Release time:

2021-01-25

Earlier, we introduced the precautions for the installation of the distribution box and how to fix the distribution box. Today, we will introduce the problems that may be encountered during the installation of the distribution box.

question:

　　① The selection is not based on the drawing requirements or the selection is improper.

　　② The iron skin of the distribution box body is too thin and the rigidity is poor, which causes serious deformation of the shell and the door, and the closing gap is too large.

　　③ The models and specifications of electrical appliances installed in some boxes do not meet the design requirements.

　　④ There is no grounding and zeroing bus, or the specifications of the grounding and zeroing bus are too small to meet the requirements of use.

　　⑤ Some distribution boxes have no isolation and blocking protection, and some protection boards are not equipped with insulating or flame-retardant materials.

　　For the above problems, we can use:

　　① Orders must be strictly in accordance with the design drawings and relevant specifications. Receiving the goods should conduct visual inspection in time, whether there is a factory certificate, whether the nameplate is correct, whether the accessories are complete,

Whether the insulation is defective or cracked, and whether the coating is complete. Whether the model and specifications of the electrical appliances in the box meet the design requirements.

　　②Whether the application thickness of the iron box of the distribution box meets the requirements.

　　③ There is a grounding terminal board in the distribution box, which should be connected to the box body, and the working neutral terminal board should be insulated from the box body (except for the main distribution box), and the terminal board should be larger than the larger wire section in the box.

The production of rectangular bus bar with a double size (but the smaller cross-section should not be less than 60mm2, and the thickness should not be less than 3mm). Terminal board