Causes of electric motor winding faults
1) 1)Long-term overload,aging of the insulation.
2) 2)Inter-turn short-circuit fault.
3) 3)Insulation damage.
4) 4)The moisture winding can cause insulation breakdown.
5) 5)Over voltage of current.
6) 6)Insulation damage is caused by friction between rotor and stator winding ends.
7) 7)Insulation damage caused by rotor sweeping heat.
8)Metal foreign materials fall into the motor and oil stain is excessive.
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