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Chuck Yung EASA Senior Technical Support Specialist
Although the rotating equipment repair industry has been around for over a century, technology continues to introduce new test instruments and procedures. Some of these are good: surge test, growler, core loss test; some are bad: core testing a rotor at 60 times its operating frequency, or performing a Hipot at several times the prescribed value; and some are just plain ugly.
This paper will help you to sort out which are which, and help educate your customers as to the reasons why. Standards organizations (IEEE, ANSI, IEC) have developed specific tests, with much scientific thought as to how stringent a test should be. ANSI/EASA AR100: Recommended Practice for the Repair of Rotating Electrical Apparatus consistently references the relevant standard(s) for each test.
This paper, presented at the 2013 EASA Convention, summarizes the accepted and other electrical tests required by motor and generator end users. It covers:
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This 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.
This booklet covers topics such as:
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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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Recommended Practice for the Repair of Rotating Electrical Apparatus This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.
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Revised May 2024 The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.
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