Partial Discharge in Form Coil Stator Windings - Webinar Recordings - EASA | The Electro•Mechanical Authority
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Webinar Recordings

Webinar recording

Partial Discharge in Form Coil Stator Windings

  • May 2026
  • Number of views: 36
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AKARD COMMUTATOR of TENNESSEE (ACT)Mike Howell, PE
EASA Technical Support Specialist

Partial discharge is a common aging mechanism in medium voltage stator windings. The significant presence of partial discharge in a winding may be an acceptance criterion after manufacture. It can also be a condition monitoring tool used to assess the health of windings. This presentation covers: 

  • What partial discharge is 
  • How partial discharge damages insulation 
  • Some test methods   

Target Audience: This presentation is intended for all personnel who test or rewind medium voltage stators.

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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 7: Stators

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 7: Stators

Root Cause Failure Analysis
  • Section 3: Stator Failures

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