The reason of smoking ac motor overheating

Ac motor overheating smoking causes are: (1) cage rotor broken bar or wound rotor winding wiring loose, the broken and loose, repair welding or fastening screws; (2) the power supply voltage is too high, if the supply voltage exceeds bid is bigger, is solved by power supply departments; (3), rotor core motorcycle rub, if the bearing clearance overrun, replace the new bearing. If the axis of bending and straightening process. If the core looseness, www.facebook.com/dongfeng.motor deformation, processing core; (4) the surface of the winding with grime, foreign body, cleaning or washing motor; (5) the motor start or amounts of positive and reverse frequently, reduce the motor start and the number of positive and reverse, or change the suitable motor; (6) motor overload or drag mechanical resistance motor part is too large, eliminate drag mechanical failure, reduce the resistance. If more than rated current, it is necessary to reduce the load. Replace the large capacity motor or adopt measures to increase; (7) the power supply voltage is too low, if the power cord pressure drop is too big, change the coarser the power cord. If the supply voltage is too low, is solved by power supply departments; (8) winding asynchronous motor turn-to-turn, interphase short circuit, winding grounding, check out; (9) inlet air temperature is exorbitant, check the cooling unit and the surrounding environment temperature; (10) motor open phase running, check the fuse, switch contact point, troubleshooting; (11) caused poor ventilation fan fault, check the fan, whether the blade deformation, damage or loose, replace when necessary; (12) after rewind, winding dipping, "secondary" leaching paint processing, or use vacuum varnished measures; (13) winding wiring error, change; (14) higher environmental temperature, or motor ventilation congestion,