From time to tome noise motor

Mechanical parts and electromagnetic part of motor fault points,distinguish method: first to make the motor operate,carefully listen to the voice of the running,and then a power outage,let the motor inertia magnet motor continues to run,if not normal voice disappear at this moment,that is the motor electromagnetic fault,otherwise is motor mechanical failure.Mechanical noise,A noise from the bearing,may be damaged bearing ball,lubricating oil is too little,then A screwdriver head outside the bearing oil was built,petiole near the ear,can hear the sound of loud gurgling.B air noise was generated.The sound is very uniform,is not very strong,can be judged as normal.

C electric JiSao chamber caused by noise,the noise features a scrape of a sound,for the motor,have just completed the runtime if find any noise,can check to see if the current balance,www.dongfeng-motor.com the rotation is flexible,speed up to rated speed,above if no problem,may be in the stator slot insulation paper or bamboo chip slit,protrudes from the rotor instead of the mo was found when the sound is characterized by both sharp rotor and stator and high.Electromagnetic noise: A bad cooperation length of rotor and stator,the rotor length refers to A bearing to another bearing distance,the length of the stator refers to from A bearing chamber to another the distance of the bearing chamber,under normal generator stator circumstances,the stator length slightly longer than the rotor length,such as vary too much,may be A low "om" sound.B the rotor axial displacement,the displacement of electromagnetic noise can occur,and cause the no-load current increases,the battery performance of the motor.C of the stator,rotor slot number mismatch,the wrong loading other rotor assembly process.D breath uneven between stator rotor,stator rotor circle,also may be a slight bend axis,etc.Lack of phase,in addition,the motor winding interturn short circuit,phase short circuit,overload operation,etc all can cause electromagnetic noise.