electric starting motor common fault analysis and maintenance of failure

When electric power,the motor does not work,and the motor without any sound.To analyze its main reason is the permanent magnet motor starter motor matching with electric equipment,if the electric fan,fan,washing machine motor adopts capacitor start running,and refrigerators,freezers starting mechanism adopts resistance split-phase start running,so once starting ac induction motor capacitor in the circuit and phase splitting resistance damage destroyed,seizing work,lead to motor testing should be excluded when starting or resistance after failure,to check the motor fault.Another case is inside www.facebook.com/guohong.trading the motor winding short circuit,partial winding burned,cause the motor to stop working.


When there is a failure in the once suspected the motor itself,the most simple detection with multimeter resistance of the winding resistance measurement.Will first motor three root lead ABC use multimeter to distinguish the judgment,here in double barrel of washing machine motor,for example,when measuring the resistance value between AB in 95 ohms,resistance value between the BC in 130 ohms,AB resistance in 12 ohms,so it is easy to determine the C for linear,AC for running winding,BC for starting winding.Above all is normal of the motor winding resistance value,in the event diesel generators prices of a short circuit,the resistance value are less than the above normal,motor windings of various kinds of problems.Again like a refrigerator motor starting winding short-circuit,23 ohm resistance around,no running winding short circuit,resistance value between 10 ohms,starting and running the concatenated winding resistance in 35 normal ohm.