AC Electric Motors

AC electric motors and generators are the most common machines found in industries worldwide. With our vast experience and extensive data bank from all major electric motor OEMs, Motion Electric Motor Services is a key partner to maintain and protect the productivity of the critical equipment at the heart of your activities. Trust our expertise when it comes to AC electric motor repair!

AC motor types

  • Squirrel Cage induction electric motors
  • AC wound-rotor electric motors
  • AC synchronous electric motors
  • AC synchronous electric generators
  • AC synchronous electric condensers
  • Rotating exciters
  • AC alternators
  • AC traction motors

Scope of work

  • Rewinding
  • Stator re-stacking
  • Stator re-wedging
  • Stator winding repair
  • Cracked frame repair
  • Soft foot repair
  • Line bore check
  • RTD, thermistor and other probes installation/ replacement
  • Troubleshooting
  • Bearing replacement
  • Babbitt bearing replacement
  • Shaft repair
  • Bearing seats bushings and bearings
  • Keyway machining
  • Re-barring of rotors
  • Slip ring repair, replacement, machining

Available tests and reliability audit

  • Core loss test
  • Infrared inspection
  • Stator hot spots test
  • ELCID test
  • Partial discharge
  • Slow roll test (electrical run-outs)
  • Single-phased rotor test
  • Roundness check
  • Turn-to-turn insulation test
  • AC drop volt test
  • Winding resistance
  • Insulation resistance
  • Megger
  • Polarization Index (PI)
  • Dielectric Discharge Test (DDT)
  • Laser alignment
  • Vibration analysis