1. Look inside the electrical cabinet, for example, to see if there are small animals and their droppings, and whether there are condensation or water marks. If the dust in the cabinet is large, please clear the external radiator of the inverter.
2. Assuming that the humidity is relatively large, there are condensation or water marks, please open the cabinet door first, ventilate and dehumidify, and use electric fans and other things.
3. Start the electric fan of the electrical cabinet to exhaust. If the electrical cabinet is air-conditioned or heated, dehumidify it first.
4. Check the upstream and downstream equipment, including the interphase and phase-to-ground insulation of incoming switches, contactors, outgoing cables, motors, braking resistors and each DC terminal of the braking unit and the insulation between them and ground. Make sure the power terminals are free of looseness and corrosion.
5. Check the weak current lines, such as communication cables, I/O cables, etc., to ensure that their connections are reliable and free of looseness and corrosion.
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The editing and display mode in all Chinese greatly improves the readability of the program;
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