ANSI Accredited Standards Developer Information - EASA | The Electro•Mechanical Authority
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

Questions?

For information about ANSI/EASA AR100 or questions about the work on this standard, contact:

Mike Howell, PE
EASA Technical Support Specialist
+1 314 993 2220
mhowell@easa.com

ANSI Accredited Standards Developer Information

Understanding Fan Performance Curves

  • August 2026
  • Number of views: 836
  • Article rating: 1.0

Performance curves are among the most crucial and frequently requested documents from fan manufacturers, second only to dimensional prints. While many request these documents, not everyone fully understands their significance or maximizes their potential.

Entendiendo las curvas de rendimiento de los ventiladores

  • August 2026
  • Number of views: 310
  • Article rating: No rating

Las curvas de rendimiento se encuentran entre los documentos más importantes y solicitados a los fabricantes de ventiladores, superadas únicamente por los planos dimensionales. Si bien muchos solicitan esta documentación, no todos comprenden plenamente su importancia ni aprovechan al máximo su potencial.

Get Excited About Excitation

  • July 2026
  • Number of views: 1451
  • Article rating: No rating

Few things are less exciting in the motor world than a large synchronous motor that refuses to start—and all too often, the root cause is excitation. This article provides an overview of what synchronous motor excitation is, how it works, and the common issues you are likely to encounter.

Entusiasmate con la excitación

  • July 2026
  • Number of views: 479
  • Article rating: No rating

Pocas cosas resultan menos estimulantes en el mundo de los motores que un gran motor sincrónico que se niega a arrancar; y, con demasiada frecuencia, la causa raíz reside en la excitación. Este artículo ofrece un panorama general de qué es la excitación de un motor síncrono, cómo funciona y los problemas habituales que es probable que encuentre. 

Rewind 2026

  • June 2026
  • Number of views: 2864
  • Article rating: No rating

Revisit EASA's 2026 Convention & Solutions Expo by buying access to recordings of the general sessions and education events streamed from EASA's website! These recordings provide just over 32 hours of training. Downloadable PDFs of slides and technical papers are included!

EASA Technical Manual

  • May 2026
  • Number of views: 42372
  • Article rating: .8
FREE for Members of EASA

Revised May 2026!
EASA's most comprehensive technical document is available FREE to EASA members. Download the complete manual or just the sections you're interested in.

Fan Laws and System Resistance Curves

  • January 2026
  • Number of views: 2150
  • Article rating: No rating

The purpose of this article is to explain the basis and application of rules used to “estimate” fan performance for a fan installed in a duct system moving air when the speed of the fan is changed.

Leyes de los ventiladores y curvas de resistencia del sistema

  • January 2026
  • Number of views: 1207
  • Article rating: No rating

El propósito de este artículo es explicar los fundamentos y la aplicación de las reglas utilizadas para estimar el rendimiento de un ventilador instalado en un sistema de conductos que mueve aire al variar su velocidad. Con un conocimiento básico de estas reglas, es posible calcular rápidamente el rendimiento de un ventilador para diversas condiciones de velocidad.

Concentric to Lap Conversions

  • December 2025
  • Number of views: 2670
  • Article rating: No rating
FREE for Members of EASA

This presentation covers the important details for a properly converting a 3 phase winding from concentric to lap.

Rebobinando Motores Trifásicos Inverter Duty

  • October 2025
  • Number of views: 2896
  • Article rating: No rating
FREE for Members of EASA

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.

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

BUY PRINTED COPIES

EASA Good Practice Guide

Good Practice Guide to Maintain Motor Efficiency
Based on the 2019 and 2003 Rewind Studies of premium efficiency, energy efficient, IE2 (formerly EF1) and IE3 motors

LEARN MORE & DOWNLOAD