Rewind Study ResultsTests prove proper repair/rewind practices maintain the efficiency/reliability of Premium Efficiency/IE3 motors.
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Revisit — or watch for the first time — all the sessions from EASA 2020 Reimagined! 18 great presentations in all!
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NOTICE: The EASA office will be closed Thursday, Nov. 26 and Friday, Nov. 27 for the Thanksgiving holiday.
By Mike Howell
EASA Technical Support Specialist
The switched reluctance motor (SRM), also known as the variable reluctance motor (VRM), originated in the mid-1830s. It was first used as a locomotive traction motor. However, the power electronics necessary for satisfactory control of SRMs were not patented until the early 1970s. This entailed electronic commutation synchronized with rotor position. Service centers are seeing an increase in the number of SRMs received for repair, and some of the technicians encountering them are unfamiliar with how they work. As with any other rotating machine, a basic understanding of operating principles can be useful in troubleshooting and repair. One of the most critical things for service center personnel to understand upfront is that these machines cannot be operated without a special drive, which typically would need to be supplied by the end-user or the manufacturer.
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AVAILABLE IN SPANISH
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 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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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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Guide for the Repair of Power and Distribution Transformers
This document establishes guidelines for each step of the repair of power transformers, describing record keeping, tests, analysis, and general guidelines for the repair of power transformers.