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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

Trends & Solutions: Induction, Synchronous, DC and Wound Rotor Motors

  • July 2013
  • Number of views: 9043
  • Article rating: No rating

Charles LeMone
LeMone Technical Services
Roanoke, VA 

Is the induction motor the preferred answer in industrial drive applications? What is happening to the synchronous, DC and wound rotor motor (WRM) in those applications? This paper discusses:

  • Observations as customers replace synchronous, WRM and DC machines with the induction motor
  • Why synchronous motors are used in industrial applications
  • Issues with WRM and soft starters
  • A case study of a 12,000 hp 4-pole synchronous motor and a soft starter
  • What needs to be done to modernize the older synchronous motor starter?
  • How a brushless synchronous motor operates
  • Brushless synchronous motor protection

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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 15: Synchronous Machines

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 15: Synchronous Machines

Tags: Synchronous motors Wound rotor induction motors
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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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