Valence Electrical Training Services

Understanding Microprocessor Relay Logic – Microprocessor Relay Testing Plans

We have uploaded our fourth YouTube video, Understanding Microprocessor Relay Logic – Microprocessor Relay Testing Plans. ( This video discusses how to turn the microprocessor relay testing logic into microprocessor relay testing test plans.

This video series is a re-creation of the first paper I ever presented from the NETA conference in 2001 that was the foundation of The Relay Testing Handbook series.

The video describes some of the most useful tips for engineers, including:

  • Use the relay’s native software to create the relay settings
  • Supply a print-out of the FINAL settings as a separate, version controlled drawings
  • Create drawings of the output logic that anyone can understand as a version controlled drawing.

The video also describes some tip for relay testers, including:

  • Add the nameplate data, including ratings, to your test sheet
  • Perform a pick up and timing test of each element used
  • Always test the in-service outputs
  • Add a copy of the FINAL settings to your test sheet
  • Write down the password!!


We’ve learned a lot about the YouTube format while creating this series and, unfortunately, it turns out converting PowerPoint to video is a little dry. Future video series will be much better.

We hope you found this video informative and hope you’ll stick with us as we get better with each series.


About the Author Chris Werstiuk

Chris is an Electrical Engineering Technologist, a Journeyman Power System Electrician, and a Professional Engineer. He is also the Author of The Relay Testing Handbook series and founder of Valence Electrical Training Services. You can find out more about Chris here.

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