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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

Voltage and horsepower

Follow formula to run motor on less-than-nameplate voltage

  • May 1999
  • Number of views: 4837
  • Article rating: 5.0

Chuck Yung 
EASA Technical Support Specialist 

You may have experienced this situation before: Your best customer just called to say he has a plant down and is in desperate need of a 100 HP, 6-pole, 460-volt motor.  And he needs it now! 

You check your stock and find one that's pretty close. The frame is right, but it's a 125 HP unit at 575 volts. What can you do? You know that the motor will run at 460 volts, but how much horsepower will it produce? 

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EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual
  • Section 2: AC Machines

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)
  • Section 5: Basic Motor Theory
  • Section 6: Motor Standards

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 5: Basic Motor Theory
  • Section 6: Motor Standards

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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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