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Resource Library

Controlling Stator Copper Losses in Formed Coil Rewinds

  • May 2020
  • Number of views: 829
  • Article rating: No rating
FREE for Members of EASA
Webinar recording

This webinar recording looks at several aspects of winding design to prevent increased temperature rise and decreased efficiency.

Principles of Medium & Large AC Motors, 1st Edition - IEC

  • February 2020
  • Number of views: 1524
  • Article rating: 5.0
Book

This manual covers horizontal and vertical squirrel-cage induction motors in the 300 to 5,000 horsepower range, low- and medium-voltage. Most of the principles covered apply to other sizes as well. This manual focuses primarily on IEC motors and standards.

Air Gap: What Is It, What Does It Do, and Why Is It Important?

  • October 2019
  • Number of views: 3243
  • Article rating: 5.0
Webinar recording

The physical air gap between the rotor or armature and the stator or field frame is complex and plays a critical role in the performance of AC and DC machines. Most repairers do not realize how little they understand about this subject.

Continuación de las pérdidas I2R – pérdidas adicionales en los bobinados del estator

  • July 2019
  • Number of views: 623
  • Article rating: No rating
Booklet

Este artículo proporciona una breve revisión de las pérdidas de I2R del estator y luego explora las pérdidas adicionales de cobre del estator mencionadas originalmente en marzo de 2013 sobre el mismo tema.

Beyond I2R – Additional copper losses in stator windings

  • July 2019
  • Number of views: 1241
  • Article rating: No rating
Article

This article provides a brief review of stator I2R losses and then explores the additional stator copper losses originally mentioned in the March 2013 on the same topic.

Almacenamiento a largo plazo: Algunos puntos a tener en cuenta

  • February 2019
  • Number of views: 553
  • Article rating: No rating
Article

Es bien conocido por aquellos que trabajan con el almacenamiento de motores eléctricos que las filosofías y procedimientos de mantenimiento varían. La revisión minuciosa de la información de EASA y siete fabricantes de motores diferentes sobre el almacenamiento de motores reveló algunas diferencias y similitudes interesantes en la información disponible en cada una de las fuentes consultadas.

Varias fuentes comparten elementos comunes como el ambiente, la protección contra humedad, el mantenimiento de los rodamientos y la resistencia de aislamiento. Aquí, la finalidad de nuestro debate es describir algunas de las diferencias y ojalá dar a conocer algunos puntos a tener en cuenta cuando se crea un procedimiento de almacenamiento a largo plazo para los usuarios finales.

Los programas AC Motor Verification and Redesign y Motor Rewind Data Version 4 trabajan en conjunto para ofrecer más funciones

  • February 2019
  • Number of views: 646
  • Article rating: 1.0
Article

Las nuevas funciones del programa AC Motor Verification and Redesign – Version 4 (ACRewind) de EASA mejoran la capacidad de los miembros de EASA para enviar datos originales de forma electrónica e incluirlos en la base de datos Motor Rewind Data – Version 4 (MotorDB).

AC Motor Verification and Redesign and Motor Rewind Data Version 4 programs work together to offer more capabilities

  • February 2019
  • Number of views: 687
  • Article rating: No rating
Article

The Version 4 software is a powerful set of tools for members to check the validity of winding data and to redesign windings from concentric-to-lap and for changes in motor performance. A key feature of this latest version of the program is the integration of the MotorDB with the ACRewind program. The availability of both program functions within a common user interface provides more than just convenience. The ability of the programs to share data resources creates new capabilities that the stand-alone version of the program could not.

DC motor applications: Types of fields and benefits of each

  • April 2018
  • Number of views: 563
  • Article rating: No rating
Article

For the wide variety of DC motor applications, there are those where a straight shunt motor is preferred and others which seem to require the greater starting torque of a series field. Why are there different field designs and are they interchangeable? What about the nameplates marked “stab shunt” or “str shunt?” The purpose of this article is to clear up lingering confusion about the types of fields as well as the benefits of each.

Aplicaciones de motores de CC: Tipos de campos y beneficios de cada uno

  • April 2018
  • Number of views: 398
  • Article rating: No rating
Article

Para la amplia variedad de aplicaciones de motores de CC, existen aquellas en las que se prefiere un motor shunt directo (straight shunt) y otras que parece que necesitan el mayor torque de arranque de un campo serie. ¿Por qué existen diferentes diseños de campo y son intercambiables? ¿Qué sucede con las placas de datos marcadas como “stab shunt” o “str shunt?” El propósito de este artículo es aclarar la confusión permanente sobre los tipos de campos, como también los beneficios de cada uno.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 40-page booklet provides a great marketing tool for your service center! Use it to provide end users with information that will help them obtain the longest, most efficient and cost-effective operation from general and definite purpose electric motors.

This booklet covers topics such as:

  • Installation, startup and baseline information
  • Operational monitoring and maintenance
  • Motor and baseline installation data
  • How to read a motor nameplate
  • Motor storage recommendations

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EASA Technical Manual

EASA Technical Manual cover

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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ANSI/EASA AR100-2015

ANSI/EASA AR100-2015 cover

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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EASA AR200

EASA AR200: Guide for the Repair of Power and Distribution Transformers cover

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.

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