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This valuable publication explains the findings of a major study that analyzed the impact of repair/rewinding on the energy efficiency of Premium Efficiency/IE3 electric motors. This study was a follow up to a 2003 study.
Intended primarily for service center personnel, the guide which is now an independent document and not part of the complete EASA/AEMT rewind study report, outlines the good practice repair methods used to achieve the results given in both studies. It contains repair tips, relevant motor terminology, and information about sources of losses in induction motors that affect efficiency.
This webinar covers the results and the technical details of the recently completed follow-up to the 2003 EASA/AEMT Rewind Study.
There are certain repair processes that can impact the efficiency and reliability of electric motors. Prudent repair practices must not increase overall losses, and preferably should maintain or reduce them. In some cases, repairers can also employ the principles applied by the motor designers and further reduce losses and enhance efficiency. Most of the following material is taken from, or based on, the "The Effect of Repair/Rewinding on Motor Efficiency; EASA/AEMT Rewind Study And Good Practice Guide to Maintain Motor Efficiency." Stator Core Processing And Repair Concerns about the possibility of core degradation during the rewind process have been expressed since at least the early 1990s. Higher temperature rated core plate insulation material greatly reduces the possibility of core degradation during the burnout process. However, a best practice approach is to avoid the possibility of core damage no matter what type of core plate is used.
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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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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