In the previous article, we said that vibration failure of three-phase asynchronous motors is common2--6Polar motor, and a simple description of the external characteristics of the motor, the cause of vibration, such as the anchor screw loosening or bearing end cap screw loosening, three-phase voltage, three-phase fuse and other reasons, will cause motor vibration.

       If all these phenomena are dealt with,Three-phase asynchronous motorThere is still a vibration phenomenon, then we need to disconnect the power supply, unlock the coupling, so that the motor connected to the load machine evacuation, single-turn motor;

       ifThree-phase asynchronous motorIf the motor vibrates, it indicates that the vibration source is caused by the coupling is not found or the load machine, if the motor vibrates, it indicates that the motor has a problem, and other power failure methods can be adopted to distinguish between electrical reasons, as usual machine reasons, when the power failure moment, the motor does not vibrate or the vibration is reduced, it indicates electrical reasons, otherwise it is machine obstruction.

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