Online Training Courses

Online Relay Testing Training

Learn at your own pace with our affordable online training courses based on The Relay Testing Handbook.

  • Choose the topics most important to you
  • Any location and time convenient for you
  • Focus on the skills you need
  • Apply to any relay or test-set

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Relay Testing Books

Online Relay Testing Training

A series of nine indispensable volumes that every relay tester needs:

  • Electrical Fundamentals
  • Relay Testing Fundamentals
  • Digital Logic
  • Step-by-step instructions for testing 50/51/67/59/27/81/87/21 protection

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Hands-On Relay Training

Online Relay Testing Training

Small, effective, hands-on relay classes at our location, or yours. Take one of the classes below, or create your own.

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The Latest From TechTalk

High Impedance Busbar Differential Protection

We covered the basic operating principles of high impedance busbar differential protection in our previous post, I Want to Know How a High Impedance Differential Scheme Works. You should read that post first before we dig deep into the calculations and considerations that explain how high impedance busbar differential schemes function. We received this question from the Ask Chris section at … Read More

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Our Latest Video

Frequency Response and The Power System

Here's an excellent video on frequency response in the grid from NERC. I often tell my students that renewables are making the power system less stable and this video explains part of the issue. https://vimeopro.com/nerclearning/erstf/video/146105419 … Read More

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