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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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

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Factors to Consider When Testing DC Armatures

May 2021
Number of views: 14444
Article rating: 5.0

Chuck Yung
EASA Senior Technical Support Specialist

When testing DC armatures, whether incoming for repair or after completing a rewind, one question I often hear involves interpreting the surge test (or the high-frequency bar-to-bar test) results. There is a lot to our interpretation of the bar-bar test or surge test.

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ANSI/EASA AR100

More information on this topic can be found in ANSI/EASA AR100

Section 4: Testing

EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual

Section 3: DC Machines

Related Reference and Training Materials

Fundamentals of DC Motors & Operation Tips

Section 4: Testing
Section 5: Armatures

Categories: DC motors, Armatures, Testing, Motor testing

Tags: Armatures Motor testing

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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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