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The main reason of the leakage of the motor shell in Taiwan is that there is a lead out line in the motor, the insulation is broken and the shell is touched. The partial leakage of the motor winding causes the leakage between the stator and the shell. What's more, it has been in a high humidity environment for a long time, which makes the motor damp and the insulation lower.
At this point, we can use the shake table to measure the insulation resistance between the motor windings and the casing. If the 2M&Omega is below, the motor has been seriously damp, and the motor stator windings should be treated by baking and moisture removing. When the motor is running, the temperature rise is intensified, and the surface temperature of the motor housing is generally about 20 degrees higher than the ambient temperature, and the maximum temperature rise should not be higher than 70 DEG C under normal working conditions.
If the motor works after a few minutes, the shell surface temperature rises, and the machine emits tar smell or even smoke, it is the motor overheating fault. Cause motor overheating temperature rise, the main motor itself quality problems; long-term motor overload (transmission mechanism caused by the fault of motor load); motor cooling conditions; motor winding local short circuit etc.. Among them, the more common is the winding turn to turn short circuit, can open the casing examination winding.
If the line pack is not burned, the stator can be re coated with insulation and then dried. If the line package has partial burning, only the replacement of the winding line bag Dongyuan motor.
