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Motor winding heating and drying circuit with welding transf

2016-09-04 08:27  
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Motor winding heating and drying circuit with welding transformer
For three - phase motor, the heating single phase power supply should be controlled about 110V, it can use a welding transformer to reduce the power supply voltage to 380V or 220V and access to the three-phase stator windings connected in series, and the circuit is shown in Fig. A stator winding current ( measured by the ammeter A ) is 70 % to 80% of the rated motor current, when it is energized 7 to 8 hours, the motor will be dried.