Open Search

End turn and connection spacing in large motors and generators

Publication date: 
September 2015
Author(s): 
Richard Huber, P. Eng.
Type of media: 
Article

Recently I worked on new air-cooled machines rated at 13.8 kV that generated large quantities of ozone and had very high partial discharge levels. The basic problem with the windings in these machines was incorrect spacing of the end turns and the main leads. There was also a lack of space between the series and group connections in the windings. 

Topic(s): 
AC motors
Stators/windings
Alternators/generators