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NEMA Reactivates Standard for Polyphase Induction Motors for Power Generating Stations


The National Electrical Manufacturers Association (NEMA) has reactivated and published ANSI/NEMA C50.41, "American National Standard Polyphase Induction Motors for Power Generating Stations." Reactivated with ANSI approval, ANSI/NEMA C50.41-2012 applies requirements to polyphase induction motors intended for use in power generating stations including:

  • frame size larger than NEMA 440 series
  • squirrel-cage type
  • single speed or multispeed
  • horizontal or vertical construction
  • form wound

View the contents and scope of ANSI/NEMA C50.41-2012. A hard or electronic copy may be purchased for $63 by visiting, or contacting IHS by phone at (800) 854-7179
(United States) or (303) 397-7956 (international).

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