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ANSI/EASA AR100-2020 cover

ANSI/EASA Standard AR100-2020
ANSI/EASA AR100-2020: Recommended Practice for the Repair of Rotating Electrical Apparatus is a must-have guide to the repair of rotating electrical machines. It establishes recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

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Questions?

For information about ANSI/EASA AR100 or questions about the work on this standard, contact:

Mike Howell, PE
EASA Technical Support Specialist
+1 314 993 2220
mhowell@easa.com

ANSI Accredited Standards Developer Information

Synchronous motor testing tips, procedures and background

  • January 2005
  • Number of views: 15389
  • Article rating: 4.6

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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ANSI/EASA AR100

More information on this topic can be found in ANSI/EASA AR100
  • Section 4: Testing

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)
  • Section 15: Synchronous Machines

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 15: Synchronous Machines

Tags: Motor testing Synchronous motors
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EASA Rewind Study cover

The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors
Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.

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EASA Good Practice Guide

Good Practice Guide to Maintain Motor Efficiency
Based on the 2019 and 2003 Rewind Studies of premium efficiency, energy efficient, IE2 (formerly EF1) and IE3 motors

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