Polarization Index and Dielectric Absorption Ratio: Which Is “Better?” - Upcoming Seminars & Webinars - EASA | The Electro•Mechanical Authority
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Webinar

Polarization Index and Dielectric Absorption Ratio: Which Is “Better?”

Event date: 1/13/2027 12:00 PM - 12:45 PM Central

Sponsored by AKARD COMMUTATOR of TENNESSEE (ACT)
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Price
   Member: FREE
   Non-member: $99

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AKARD COMMUTATOR of TENNESSEE (ACT)

Presented by Chuck Yung
EASA Senior Technical Support Specialist

The PI test is well known and often requested by our customers. This webinar explains the PI ratio and the less-well-known DAR and describes where they are useful and where they are not. The PI ratio is a variant of a DAR, using a 10-minute / 1-minute ratio. It is well- regarded for form wound machines. Too many customers want to apply the PI test to DC machines and random windings. This webinar will explain why that is not a valid test for some windings and explain the advantages of the DAR (1 minute / 30 second) test. 

Topic includes: 

  • What is a PI test, and how does it work? 
  • Why is winding capacitance important? 
  • What is the difference between the PI and DAR? 
  • What types of windings is the PI ratio used for? 
  • What types of windings is the PI ratio not suitable for? 

Target Audience: Technicians, management and sales personnel. It is especially relevant for field service and in-shop technicians.

Recording Notice: This online meeting will be recorded and fixed in a tangible medium, making it subject to copyright protection.

Participant Consent: By attending this meeting, the participant grants permission for their image, voice, and any contributions (including questions, comments, or shared content) to be recorded, reproduced, and distributed as part of this meeting recording.
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Notice before seminar Service charge
Greater than 3 weeks No charge
1 to 3 weeks 30%
Less than 1 week 50%
 

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EASA reserves the right to provide a substitute instructor if the scheduled presenter is not available due to unforeseen circumstances. Note: Some instructors are independent contractors and not employees of EASA. The accuracy of the advice and representations rendered by these instructors cannot be confirmed nor necessarily endorsed by EASA.