Valence Electrical Training Services

Get NETA CTDs for All of Our Online Courses

The InterNational Electrical Testing Association (NETA at just informed us that our latest online training courseDrawing Phasor Diagrams for Relay Testers, has been approved for 4 Continuing Technical Development Credits (NETA CTDs).  This means that, once again, all of our courses are eligible for NETA CTDs.

Our online training courses aren’t your typical “Let’s just video an instructor in front of a whiteboard” or “Let’s just read a PowerPoint presentation” kind of online training. All of our online training courses start with a short video of the theory behind a topic, followed by a real world application, and then you complete hands-on training exercises based on real-life situations.  We make sure you can apply the theory to the real world, and provide a certificate of achievement after you pass a final quiz. Our learning management system keeps track of your progress for you so that you can start, stop, and re-start the course any time.  This means that you can fit these courses in your busy schedule and still get the NETA CTDs you need to maintain your certification.

We currently have two online training courses for electrical workers who want to learn the basics of electricity to help them truly understand and interpret their test results instead of pushing the right sequence of buttons to get a “pass” for their test sheets.

The Three-Phase Power System starts at the very beginning so that you have a foundation to build from.  This course will help you understand:

  • How generators and motors produce electricity.
  • How to count cycles.
  • How cycles and frequency are related.
  • How to convert between cycles and seconds using different references.
  • How to figure out what reference your test-set and relays use, and why your test results are so out of whack when they use different references.
  • How three-phase electricity is created.
  • Why we have A-B-C and A-C-B systems and how to tell the difference between the two.

Get More Information About the Three-Phase Power System


Drawing Phasor Diagrams for Relay Testers introduces you to phasor diagrams including:

  • Where phasor diagrams come from and how to draw them.
  • Why Doble, Manta Test Systems, Megger, Omicron, SEL, GE Multilin, and GE UR relays have different descriptions for the same phasors.
  • How to interpret, understand, and convert phasors between all of the different angle systems.

Learn More About Phasor Diagrams Today!


These courses are eligible for 4 NETA Continuing Technical Development Credits (CTDs). NETA Certified Technicians (Level III and Level IV) are required to earn a minimum of 48 CTDs every three years to maintain their certification. For more information about the CTD program and requirements, please contact the NETA office at [email protected] or 888-300-6382.

About the Author Valence Announcements

Valence Electrical Training Services is the independent source for protective relay training for relay testers. We offer: • Online Training Courses that can be completed at any location at any time • The Relay Testing Handbook series of books written for relay testers by a relay tester • Hands-On Training Classes where you come to us, or we come to your organization

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