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Considerations for Inrush vs. Locked Rotor Amps

  • June 2021
  • Number of views: 2858
  • Article rating: No rating
Article

When an AC motor is initially energized at rated voltage (and frequency), the current drawn is many times rated current until the motor attains full operating speed. Consequences of starting current include short time overheating of stator windings and rotors, undesirable operation of overload protective devices and a sag in the supply voltage.

Consideraciones para los Amperios Inrush vs Rotor Bloqueado

  • June 2021
  • Number of views: 1516
  • Article rating: No rating
Article

Cuando se energiza inicialmente un motor de CA a su voltaje nominal (y frecuencia), el motor toma varias veces la corriente nominal hasta que alcanza toda la velocidad de operación. Las consecuencias de la corriente de arranque incluyen: Breve sobrecalentamiento de los bobinados del estator y del rotor, disparos no deseados de los dispositivos de protección y caídas de voltaje en el suministro eléctrico.

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

  • February 2020
  • Number of views: 11990
  • 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.

Rotor/Armature Core Test Form

  • September 2019
  • Number of views: 967
  • Article rating: No rating
Form/Worksheet

EASA’s Rotor/Armature Core Test Form provides a step-by-step procedure for calculating the number of turns and cable size required for a loop test.

Advanced rotor bar testing with surface magnetic field measurements

  • April 2018
  • Number of views: 2338
  • Article rating: No rating
Article

Traditional rotor bar defect detection systems are often insufficient in sensitivity, record-ability and numerical analysis of test results. Many means of rotor defect detection require the motor to be fully assembled with a functional stator. These limitations have laid the groundwork for the development of a new rotor defect detection technique.

Prueba avanzada de un rotor de barras con mediciones de campo magnético de superficie

  • April 2018
  • Number of views: 1432
  • Article rating: No rating
Article

Los sistemas tradicionales para la detección de defectos en las barras de un rotor a menudo son insuficientes en sensibilidad, capacidad de registro y análisis numérico de los resultados de la prueba. Muchos medios para la detección de los defectos de un rotor requieren que el motor esté completamente ensamblado con un estator funcional. Estas limitaciones han establecido las bases para desarrollar una nueva técnica de detección de defectos en el rotor.

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.

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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.

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EASA Technical Manual

EASA Technical Manual cover

Revised May 2021
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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