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

ANSI Accredited Standards Developer Information

What watts, what pounds? Working with stator core test results

November 2019
Number of views: 9630
Article rating: 3.8

Mike Howell
EASA Technical Support Specialist

The two primary reasons for performing stator core testing in the service center are (1) to verify that the stator core is acceptable for continued use and in the event of a rewind, and (2) to verify that the repair process has not adversely changed the stator core condition.

The purpose of this article is to discuss how we determine, assess and compare stator core test results. It is extremely important to understand that variance in test procedures may invalidate comparison.

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ANSI/EASA AR100

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

Section 2: Mechanical repair
Section 3: Rewinding

EASA Technical Manual

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

Section 2: AC Machines
Section 7: Electrical Testing

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)

Section 7: Stators

Principles of Medium & Large AC Motors (IEC Standards)

Section 7: Stators
Section 12: Test & Inspection Procedures

Fundamentals of DC Motors & Operation Tips

Section 4: Testing

How To Wind Three-Phase Stators interactive training software

Lesson 2: Core Testing

Categories: Technical topics, AC motors, Stators/windings, Laminations, Testing, Motor testing

Tags: Stator core Core loss 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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