Causes of Stator Winding Short Circuit in Shaded Pole Motor

Causes of Stator Winding Short Circuit in Shaded Pole Motor

The main reasons for the short circuit of the stator winding of the shaded pole motor are as follows:

(1) Unskilled operation of embedding wire during repair, resulting in insulation damage, or the temperature of the soldering iron is too high when welding the lead wire, and the welding time is too long to burn the insulation of the coil;

(2) The insulation of the winding is aging due to disrepair for a long time, the winding is damp, and it runs directly without drying, resulting in insulation breakdown;

(3) The shaded pole motor is overloaded for a long time, and the current in the winding is too large, which makes the insulation aging and brittle, and the insulation performance is reduced and the insulation effect is lost;

(4) Poor insulation of connecting wires or lead wires between stator winding nano-coils;

(5) When the winding is rewinded, the phase-to-phase insulation at the end of the winding or in the double-layer winding slot is not properly matted or broken down;

(6) Due to the serious wear of the bearing, the stator and the rotor core rub against each other to generate high heat, which causes the insulation of the stator winding to burn out;

(7) Lightning strike, too many consecutive starts or overvoltage breakdown insulation.

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