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How To Deal With Overheat Protection Fault Of Elevator Motor
- Jan 18, 2019 -


Internal Reasons of Elevator Motor


(1) When installing and repairing motors, incorrectly connect the motor windings of connection method to connection method, or incorrectly connect the motor windings of connection method to connection method.


(2) Inter-winding, inter-turn short circuit or grounding lead to winding current increase, three-phase current unbalance and motor overheating.


(3) Incorrect connection of pole-phase coils or uneven distribution of coils per phase results in unbalanced three-phase no-load current and excessive current; serious unbalance of three-phase current during motor operation results in noise and vibration, and motor overheating.


(4) Friction heating occurs between stator and rotor.


(5) The cage rotor guide bar of asynchronous motor is broken, or the winding of winding rotor is broken. The motor is overheated due to insufficient output.


(6) Overheating of motor bearings.


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