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Synchronous motor testing tips, procedures and background

  • January 2005
  • Number of views: 2202
  • Article rating: 5.0

Richard Hughes (deceased)
Pump & Motor Works, Inc.

Proper testing of a synchronous motor is crucial for validating repair, reconditioning or remanufacture. There are several types of synchronous motors and a brief description of each will be given prior to discussing testing.

Topics discussed are:

  • Brush type motor
  • Watch for resistance value extremes
  • Brushless motors
  • Performing insulation resistance test
  • Performing AC voltage drop test

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