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NOTICE: The EASA office will be closed Dec. 24, 2024 - January 1, 2025. Technical support will still be available. For quickest response, please use the online support forms or send your inquiry to technicalsupport@easa.com.
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Webinar Recordings

Using EASA’s Motor Rewind Data – Version 4

  • June 2024
  • Number of views: 2777
FREE for Members of EASA
Webinar recording

Learn how to effectively use EASA's live, ever-expanding online database of more than 250,000 windings.

Inverter Duty Three-Phase Motor Windings

  • June 2024
  • Number of views: 2489
Article

With the advent of solid-state electronic variable frequency drives (VFDs) in the late 1980s, it was found that the windings of motors used on VFDs failed more frequently than when powered by a utility (sine wave) supply. By the turn of the century, motor manufacturers had gained a better understanding of how VFDs affected motor windings. This article describes the materials and methods associated with inverter duty windings.

Devanados para motores trifásicos Inverter Duty

  • June 2024
  • Number of views: 2138
Article

Con la llegada de los variadores de frecuencia electrónicos (VFD) de estado sólido a fines de la década de 1980, se descubrió que los bobinados de los motores que funcionaban con VFDs fallaban con más frecuencia que al estar alimentados con la energía convencional (onda sinusoidal). A principios de siglo, los fabricantes de motores habían comprendido mejor cómo los VFD afectaban los devanados del motor, y al igual que los proveedores de materiales electro, aislantes habían desarrollado materiales y métodos para mejorar la confiabilidad de los devanados de los motores alimentados con VFDs. En este artículo, describiremos los materiales y métodos asociados con los devanados inverter duty.

Crooked Teeth? We’ve Got Braces!

How Using Clamps When Pulling Magnet Wire Helps Prevent Splayed Teeth

  • January 2024
  • Number of views: 1702
Article

Unless great care is taken, pulling magnet wire from a motor stator often bends or splays the lamination’s end teeth. Bent teeth, or teeth that have been splayed outward at the ends of the core stack, will likely compromise the quality of the repair job. Therefore, we have designed and implemented the use of disc clamps to hold the stator tooth tips in place while pulling magnet wire from the slots. The clamping fixtures described in the photos have helped ensure that we avoid damaging the stator teeth during the stripping process.

¿Dientes Torcidos? ¡Tenemos Ortodoncia!

Cómo el usar discos de retención al tirar del alambre magneto previene doblar los dientes de las laminaciones

  • January 2024
  • Number of views: 1275
Article

A no ser que se tenga mucho cuidado, tirar del alambre magneto al desmantelar el estator de un motor a menudo deforma o dobla los dientes de las laminaciones. Estos dientes deformados comprometerán la calidad de la reparación y hay estudios que demuestran que este problema puede reducir la eficiencia del motor. Sin embargo, aunque esta reducción puede ser pequeña, genera altos costos y desperdicio de energía.

Concentric to Lap Conversions

  • October 2023
  • Number of views: 7414
Article

This article looks at some of the import details for a proper concentric to lap winding conversion. It also shows how using the EASA Technical Manual, EASA's AC Motor Verification & Redesign Software, as well as the EASA AC Redesign manual, can help.

Conversiones de un Bobinado Concéntrico a Imbricado

  • October 2023
  • Number of views: 2130
Article
Este artículo analiza algunos de los detalles de importación para una conversión adecuada de devanado concéntrico a devanado por vuelta. También muestra cómo puede ayudar el uso del Manual técnico de EASA, el software de rediseño y verificación de motores de CA de EASA, así como el manual de Rediseño de motores AC de EASA.

How to Measure Magnet Wire

  • March 2023
  • Number of views: 3445
Video

This video shows one step in collecting motor winding data: how to measure magnet wire.

Best AC Rewind Practices

  • February 2021
  • Number of views: 16362
FREE for Members of EASA
Webinar recording

This webinar recording shares some of the “best practice” rewind methods used by (and learned from) EASA service centers around the world: connection recognition, best insulating materials, wire choices and tips to save time and effort.

Working with AC Windings

  • April 2020
  • Number of views: 12820
Webinar recording bundle

A special discounted collection of 12 webinar recordings focusing on AC motor windings.

Just $60 for EASA members!