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Interpole shims: Proper placement prevents arcing

  • November 2006
  • Number of views: 8255
  • Article rating: 5.0

Chuck Yung 
EASA Technical Support Specialist 

Have you ever wondered about the purpose of the shims found under the interpoles in most DC machines? Those shims are used by the manufac­turer to adjust the interpole strength. If they are lost, left out or mixed up, the result will be a DC motor or generator that arcs – especially when loaded.

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Categories: DC motors, Interpoles
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