For long-term storage of three-phase asynchronous motors because of a general inspection every six months to measure the insulation resistance, if there is a significant trend of change, should be dried. The environment of the motor stored should ensure that the temperature is appropriate in a dry and ventilated warehouse to prevent insects, rats and other bites of organic insulation materials.

       Where there is a backup three-phase asynchronous motor, a periodic switching system should be implemented; It is strictly forbidden to use the operation mode of overworking fatigue and not switching without accident. A proper switching period can be determined based on the structure, operation characteristics, and maintenance period of the standby device. If the standby device needs to be started in advance due to a device fault, you can calculate the switching period from the switching date to avoid frequent switching.

       Check the good condition of the spare motor regularly, and the high humidity storage point (that is, the relative humidity is greater than65%Above) should be checked once every month; Low humidity storage sites are inspected every six months, and dry storage sites are inspected annually.

       Do a good job of motor testing, cleaning and maintenance to ensure that the motor is in good condition and can be put into operation at any time. Keep a record of the problems and make a handover.

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