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Motor Temperature Rise and Methods to Increase Winding Life

  • December 2018
  • Number of views: 86
  • Article rating: No rating
Webinar recording

This webinar recording discusses:

  • Temperature rise (Method of detection, Insulation class, Enclosure, Service Factor)
  • Increasing winding life (Insulation class, Cooling system, Winding redesign)

How To Wind Three-Phase Stators (Version 2)

Self-paced, interactive training for stators 600 volts or less

  • February 2017
  • Number of views: 66
  • Article rating: No rating
Software

This EASA software is a valuable interactive training tool ideal for training your novice(s) ... and even experienced winders will learn from it. The CD teaches how to wind in a richly detailed, step-by-step approach which includes narrative, animations and video clips, with tests to assess student comprehension. 

Auxiliary cooling of electric motors (and other equipment)

  • January 2017
  • Number of views: 58
  • Article rating: No rating
Article

Although the earliest practical DC motor was built by Moritz Jacobi in 1834, it was over the next 40 years that men like Thomas Davenport, Emil Stohrer and George Westinghouse brought DC machines into industrial use.  It’s inspiring to realize that work-ing DC motors have been around for over 160 years. For the past century, DC machines over 30 or 40 kW have been cooled in the same manner – by mounting a squirrel cage blower directly over the commutator.

Refrigeración auxiliar de motores eléctricos (y otros equipos)

  • January 2017
  • Number of views: 45
  • Article rating: No rating
Article

EASA Technical Manual

  • August 2016
  • Number of views: 61
  • Article rating: No rating
Book

EASA's most comprehensive technical document is available FREE to EASA members. Download the complete manual or just the sections you're interested in.

Cool facts about cooling electric motors

Improvements in applications that fall outside the normal operating conditions

  • November 2015
  • Number of views: 61
  • Article rating: No rating
Trade press article — IEEE Industry Applications

The evolution of electric motor design as it pertains to cooling methods provides insights about better ways to cool machines in service. The array of methods engineers have devised to solve the same problems are fascinating yet reassuring because many things remain unchanged even after a century of progress. This article discusses how motors are cooled and how heat dissipation can be improved for applications that fall outside the normal operating conditions defined by the National Electrical Manufacturers Association (NEMA) Standard MG 1.

Cool advice on hot motors

  • August 2015
  • Number of views: 58
  • Article rating: No rating
Trade press article — Maintenance Technology

The effects of excessive temperature on motor performance are notorious. After moisture, they are the greatest contributor to bearing and winding failures. Understanding the source of increased temperature is key to correcting the problem and improving the reliability of your facility’s motor fleet.

Keeping it cool: A look at causes of motor overheating

  • March 2015
  • Number of views: 60
  • Article rating: No rating
Article

We know that excessive temperature and moisture are the largest contributors to bearing and winding failures. Understanding the source of the increased temperature will help us to correct the problem and improve the machine’s life expectancy.

Cool facts about cooling electric motors

Whether old or new design, lowering temperatures based on same principles

  • July 2011
  • Number of views: 44
  • Article rating: No rating
Article

Whether an old or new design, lowering temperatures is based on the same principles. I've often commented on how fortunate we are to work on such a variety of electric motor designs. One day, you are working on a new design some designer has recently created, and the next day you are repairing a motor that could be in a museum. It's fascinating to see the different ways engineers have devised to do the same thing, and yet reassuring to see how many things remain unchanged even after a century of electric motors. One aspect of electric motors that could be placed in both categories is the way an electric motor is cooled. This article takes a look at how motors are cooled and how we can improve cooling for some of the special applications we encounter.

Cuando se trata de motores ¿Qué tan caliente es caliente?

Las temperaturas muy altas afectan la vida útil del motor

  • June 2011
  • Number of views: 28
  • Article rating: No rating
Article

Frecuentemente escuchamos decir a nuestros miembros, que uno de sus clientes le ha informado que un motor que había sido reparado, ahora se calienta. Nosotros siempre les preguntamos ¿Qué tan caliente? y por lo general responden “Bueno, no puedo mantener mi mano sobre él”.

Vamos a pensar un minuto en esta respuesta. La mano del ser humano típico, puede soportar una temperatura entre 60-65°C (140-150°F), dependi-endo de las callosidades, el dolor que pueda tolerar, cuantas personas estén observando, etc. ... la temperatura es el enemigo número 1 de los motores eléctricos. Para optimizar la vida útil y el buen funcionamiento de los motores, se debe tener cuidado con el diseño, la aplicación y el mantenimiento de estas máquinas. Teniendo en cuenta todo lo anterior, no se considera seguro tocar con la mano la superfcie de un motor para saber si está muy caliente. En vez de esto, lo mejor es utilizar un termómetro.

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

LEARN MORE AND DOWNLOAD MÁS INFORMACIÓN Y DESCARGAR

READ MORE ABOUT THE FEATURES AND BENEFITS

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.

VIEW & DOWNLOAD

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.

DOWNLOAD - ENGLISH

DESCARGAR - ESPAÑOL

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.

LEARN MORE