Facebook Twitter LinkedIn YouTube Menu Search Arrow Right Arrow Left Arrow Down Arrow Up Home Arrow Next Arrow Previous RSS Icon Calendar Icon Warning Icon

Filter the results

  • Enter one or more words to find resources containing any of the words entered
  • Enter words or phrases between " " to find exact match

Resource categories

Resource Library

Revisiting insulation resistance temperature correction

  • July 2013
  • Number of views: 6081
  • Article rating: 3.0
Article

Insulation resistance (IR) testing is performed on rotating machines for several reasons including evaluation of condition, suitability for service and suitability for additional testing. IEEE Std 43-2000 provides the industry recommended practice. It is well established that there is an inverse exponential relationship between IR and winding temperature. For this reason, minimum acceptable values of IR after one minute are specified at a baseline temperature of 40°C to which test values are corrected for evaluation and/or comparison with previous measurements.

When using IR data for trending, industry recommended practice is that subsequent tests be performed when the winding temperature is near the same temperature as the previous test to minimize correction inaccuracies.

Topics discussed include:

  • Why is IR temperature correction necessary?
  • How is IR temperature correction performed?

 

Revisando la corrección por temperatura de la resistencia de aislamiento

  • July 2013
  • Number of views: 5312
  • Article rating: No rating
Article

La prueba de resistencia de aislamiento (IR), es realizada en las máquinas eléctricas rotativas por varias razones, incluyendo la evaluación de la condición del aislamiento, verificar la aptitud para su puesta en servicio y determinar si es conveniente someter los bobinados a pruebas adicionales. La norma IEEE Std 43-2000 proporciona la práctica recomendada para la industria.

Está bien establecido que existe una relación  exponencial inversa entre la IR y la  temperatura del bobinado. Por esta razón, los valores mínimos de la IR al  minuto, están especificados a la temperatura base de 40ºC. Los valores  de IR se corrigen a esta temperatura, para poder evaluarlos y/o compararlos, con mediciones de IR  previamente realizadas.

Cuando hacen análisis de tendencias de las resistencias de aislamiento, la práctica industrial recomienda que las pruebas subsecuentes sean efectuadas cuando la temperatura de los devanados se encuentre cerca de la  misma temperatura a la cual se realizó la prueba anterior para así minimizar las imprecisiones debidas a la corrección. Los temas tratados incluyen:

  • ¿Por qué es necesario corregir la IR por temperatura? 
  • ¿Cómo se corrige la IR por temperatura?

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