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How to schedule

To schedule private education for your group, contact:

Dale Shuter, CMP
Meetings & Expositions Manager

+1 314 993 2220, ext. 3335
dshuter@easa.com

1 hour of training

$300 for EASA Chapters/Regions
$400 for member companies
$800 for non-members

How a webinar works

All EASA private webinars are live events in which the audio and video are streamed to your computer over the Internet. Prior to the program, you will receive a web link to join the meeting. 

The presentation portion of the webinar will last about 45 minutes, followed by about 15 minutes of questions and answers.

Requirements

  • Internet connection
  • Computer with audio input (microphone) and audio output (speakers) appropriate for your size group
  • TV or projector/screen

Zoom logo

The Zoom webinar service EASA uses will ask to install a small plugin. Your computer must be configured to allow this in order to have full functionality. Please check with your IT department or company's security policy prior to scheduling a private webinar.

Private Webinars

EASA's private webinars are an inexpensive way to bring an EASA engineer into your service center, place of business or group meeting without incurring travel expenses or lost production time.

Article

A closer look at high potential testing of rotating electrical machine windings

  • August 2003
  • Number of views: 4588
  • Article rating:

Tom Bishop, P.E. 
EASA Technical Support Specialist 

A frequent question that arises during repair or maintenance is how much voltage to apply when performing a high potential test. The test voltage for a new winding will be higher than that of a winding that has been in service, but what is the appropriate test voltage? Seeking answers to this question can sometimes lead to confusion. Our goal in this article is to clarify high potential test­ing and test voltages. 

What is meant by high potential (hipot) testing is not always clear. The term “high potential test­ing” is defined by NEMA (MG1-1.57) and IEEE (IEEE Standard 858) as a test that “consists of the application of a voltage higher than the rated volt­age for a specified time for the purpose of determining the adequacy against breakdown of insulating materials and spacings under normal conditions.” For example, a 5000-volt hipot test on a motor rated 4000 volts would be considered a high potential test. 

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