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Filtering High-Frequency Pulse Width Modulation Effects in Electric Motors: From Problem to Solution

  • November 2025
  • Number of views: 543
  • Article rating: No rating
Article

While highly effective for control, pulse width modulation introduces high-frequency transients that can compromise motor reliability if left unchecked.

Resolving Phantom Oil Leaks in Vertical Machines

  • November 2025
  • Number of views: 310
  • Article rating: No rating
Article

A tilted or improperly sized oil standpipe can allow oil to migrate upward along the pipe’s wall when the motor is in operation, leading to leakage, loss of lubrication and potential bearing damage. This issue can be overlooked during assembly or inspection, but a few simple checks can prevent costly problems. 

Filtrado de los efectos de modulación de ancho de pulso de alta frecuencia en motores eléctricos: Del problema a la solución

  • November 2025
  • Number of views: 133
  • Article rating: No rating
Article

Si bien es muy eficaz para el control, la PWM introduce transitorios de alta frecuencia que, si no se controlan, pueden comprometer la confiabilidad del motor.

Rebobinando Motores Trifásicos Inverter Duty

  • October 2025
  • Number of views: 887
  • Article rating: No rating
FREE for Members of EASA
Webinar recording

Este webinario cubrirá los fallos asociados con los motores trifásicos accionados con variadores electrónicos de frecuencia (VFDs) y como rebobinarlos, rebajando las posibilidades de fallos futuros.

Three-phase Motor “Rules of Thumb”

  • October 2025
  • Number of views: 1116
  • Article rating: 2.7
Article

Often when we are dealing with three-phase squirrel cage motors we ask ourselves “Is there a standard or a rule of thumb for this motor characteristic?” The 10 characteristics that follow apply to conditions associated with motor starting as well as steady state operation. Examples are provided for each of the characteristics.

Motores trifásicos:“Reglas Generales”

  • October 2025
  • Number of views: 391
  • Article rating: No rating
Article

A menudo, cuando trabajamos con motores trifásicos jaula de ardilla, nos preguntamos: "¿Existe una norma o regla general para esta característica del motor?". Las siguientes 10 características aplican tanto al arranque del motor como al funcionamiento en estado estacionario.

Induction Motor Rotor Windings: Squirrel-Cage and Wound Rotor Basics for the Technician

  • September 2025
  • Number of views: 2042
  • Article rating: No rating
FREE for Members of EASA
Webinar recording

This presentation covers induction motor basics for squirrel-cage and wound rotor motors.

Vertical Motor End Play

  • August 2025
  • Number of views: 1717
  • Article rating: No rating
Webinar recording

This recording provides an overview of common different thrust bearing arrangements, with end play guidance tips for each.

Rewind Tips for Two-speed, Two-Winding Hoist Motors

  • August 2025
  • Number of views: 1420
  • Article rating: No rating
Article

Concentric to lap winding conversions are common practice in many EASA service centers. For most stators, this change is feasible and can be made with little difficulty. In some cases, however, it can be quite challenging and result in undesired outcomes due to reduction in copper or insulation.

Consejos para Rebobinar Motores de Grúas de Dos Velocidades con Dos Devanados

  • August 2025
  • Number of views: 838
  • Article rating: 5.0
Article

Las conversiones de devanados concéntricos a imbricados son una práctica común en muchos centros de servicio de EASA y en la mayoría de los estatores, este cambio es factible y se puede realizar sin dificultad. Sin embargo, en algunos casos, puede resultar muy complicado y generar resultados no deseados debido a la reducción del cobre o la pared de aislamiento.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 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:

  • 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 BUY PRINTED COPIES

READ MORE ABOUT THE FEATURES AND BENEFITS

EASA/AEMT Rewind Study

EASA Rewind Study cover

The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors
Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.

DOWNLOAD THE FULL RESULTS

ANSI/EASA AR100-2020

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 Technical Manual

EASA Technical Manual cover

Revised May 2024
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