The requirements in this standard apply to Polyphase induction motors intended for use in power generating stations, including the following: a) Frame size larger than NEMA 440 series b) Squirrel-cage type c) Single speed or multispeed d) Horizontal or vertical construction e) Form wound
ANSI C50.41-2012 history
2012ANSI C50.41-2012 Polyphase Induction Motors for Power Generating Stations
2000ANSI C50.41-2000 Polyphase Induction Motors for Power Generating Stations