Motor temperature rise too high or winding burned

The number of positive &negative too ordinary,often make the motor work under launch condition,often cause temperature rise too high,and even burn winding.Common three phase induction motor reasons: being driven mechanical acmotortrading.blogspot.com card master,ambient temperature is too high,the belt too loose or too tight,the electromagnetic part of fault,the power supply voltage is too high,too low,the gap between the end of the motor coil and single phase capacitor start induction motor iron core vent plug,220v acelectric motors fan leaf damage,etc.