Last time, Senli motor Xiaobian analyzed the power to youThree-phase asynchronous motorCan not turn, but no noise, no smell and smoke; After the electric motor does not turn, and then the fuse is burned off, these two common faults and troubleshooting methods, continue to analyze after the previous part todayThree-phase asynchronous motorCommon fault phenomena and troubleshooting methods:

       Note: If the motor fails, please be sure to be handled by technical personnel, strict non-technical personnel privately, otherwise it may cause personal and property losses.

       one.After being powered up Three-phase asynchronous motorDon't turn there's a buzz 

       l. Fault cause analysis
       ①There is a break in the stator and rotor winding (a phase break line) or a phase loss of power supply
       ②The initial end of the winding lead wire is misconnected or the winding is reversed
       ③The contact point of the power circuit is loose, and the contact resistance is large
       ④The motor is overloaded or the rotor is stuck
       ⑤The power supply voltage is too low. Procedure
       ⑥The assembly of small motor is too tight or the grease in the bearing is too strong
       ⑦Bearing jam

       2. troubleshooting 
       ①Identify breakpoints and repair them
       ②Check winding polarity; Determine whether the winding ends are correct
       ③Tighten loose wiring screws, use a multimeter to determine whether the joints are false connections, and repair them
       ④Unload or detect and remove mechanical faults
       ⑤Check to see if the regulations△The connection is incorrectly connected toYWhether the voltage drop is too large because the power supply wire is too thin,Put right
       ⑥Reassembly to make it flexible; Replacement of grease
       ⑦Repair the bearings.

       two. Three-phase asynchronous motorIt is difficult to start, and the motor speed is much lower than the rated speed at the rated load  

       1. Fault cause analysis 
       ①The power supply voltage is too low. Procedure
       ②△The motor is mistakenly connected toY
       ③Cage rotor is welded or broken
       ④The local coil of the fixed rotor is misconnected or reversed
       ③Too many turns were added when the motor winding was repaired
       ⑤Motor overload
 
       2. troubleshooting 
       ①Measure the power supply voltage and try to improve it
       ②Corrective connection
       ③Check open welding and breakpoints and repair
       ④Find out the wrong connections and correct them
       ⑤Restore the correct number of turns
       ⑥Load shedding

       Three-phase asynchronous motor Regular maintenance and overhaul is needed to avoid and reduce sudden damage accidents.
       " Mori machine"Brand affiliation Shengzhou Chaoli electric appliance factoryAfter years of accumulation of technical and service experience, the timely grasp of customer needs makes Senli motor products have been innovative and flexible, the concept of environmental protection and energy saving and motor design integration, rich product development experience to ensure Mori machine产品的高可靠和高性能。