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ANSI/EASA AR100-2020 cover

ANSI/EASA Standard AR100-2020
ANSI/EASA AR100-2020: Recommended Practice for the Repair of Rotating Electrical Apparatus is a must-have guide to the repair of rotating electrical machines. It establishes recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

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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

Assessing Impeller Damage

  • June 2014
  • Number of views: 7716
  • Article rating: No rating

The impeller is generally the most difficult pump component to repair and the most expensive to replace. This paper looks at case histories of failed pumps and the steps to determine the cause of failure.

Condition Assessment of Stator Windings in Medium-Voltage Global VPI Machines

  • June 2014
  • Number of views: 7680
  • Article rating: No rating

This paper, presented at the 2014 EASA Convention, describes research done by EASA service shops on the effectiveness and practicality of using offline partial discharge combined with a dielectrics characteristic test to evaluate the consolidation of stator windings in medium voltage machines manufactured by GVPI.

Failure Analysis of Shafts and Fasteners

  • June 2014
  • Number of views: 7452
  • Article rating: No rating

This technical paper, presented at the 2014 EASA Convention, will help you understand how and why shafts and fasteners fail.

Mitigating Harmonics and Detrimental Waveforms Caused by VFDs

  • June 2014
  • Number of views: 4837
  • Article rating: No rating

This paper, originally presented at the 2014 EASA convention, deals with understanding IEEE Std 519 and various mitigation methods in order to meet those recommendations. It also reviews the types of filtering that is available to reduce the reflected waves, first turn insulation stress, and common mode voltages seen at the motor terminals.

Troubleshooting AC Generators and Alternators

  • June 2014
  • Number of views: 4784
  • Article rating: No rating

This paper, presented at the 2014 EASA Convention, covers theory of operation, inspection, operation, and troubleshooting tips for AC generators.

Reclosure: How it Happens and What to Do About It

  • July 2014
  • Number of views: 4312
  • Article rating: No rating

This paper, presented at the 2014 EASA Convention, addresses how reclosure happens and what measures can mitigate damage potential.

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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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

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