ANSI/EASA AR100-2025 approved by ANSI - ANSI Accredited Standards Developer Information - EASA | The Electro•Mechanical Authority
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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

ANSI/EASA AR100-2025 approved by ANSI

  • December 2025
  • Number of views: 18
  • Article rating: 1.9

The ANSI Board of Standards Review has approved the revision of ANSI/EASA AR100, now designated as ANSI/EASA AR100-2025: Recommended Practice for the Repair of Rotating Electrical Apparatus. The final action was approved on November 20, 2025, and will be published in an upcoming issue of Standards Action. This approval confirms AR100-2025 as the latest American National Standard for the repair of rotating electrical apparatus.

The latest version will soon be made available on the website.



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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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