Introduction to Modern Relay Protection Testing

Rated 5.00 out of 5 based on 7 customer ratings
(8 customer reviews)

3-Day Class (Tues, Wed, Thurs 8:00 am – 4:30 pm), 24 CTDs

Modern relay protection can be extremely complex or relatively simple, depending on the relay model and design engineer. It is possible to use some testing techniques from previous relay generations, but these techniques only test individual elements, which does not guarantee the relay is set correctly or will operate when required.

Most modern relay problems have nothing to do with the actual relay as supplied by the manufacturer. Today’s relay problems occur when the relay has been incorrectly connected to the power system or was set incorrectly by the design engineer. Unfortunately, these problems cannot be detected by traditional relay testing techniques that reprogram the relay in order to get the right test value for the test sheet. Traditional techniques don’t ask the right questions to find the problems that prevent the relay from operating.

Modern relay testers must apply several different skill sets to effectively test digital relays so that they can get the test results they need for their reports, and make sure the relay is properly applied. This class will provide the basic knowledge every modern relay tester should have including:

  • What is the power system?
  • Why and how protective relays are applied?
  • What are phasors and phasor diagrams?
  • What do these numbers mean in the relaying world? (50/51/67/etc.)
  • How to read and compare single-line, three-line, manufacturer, and DC drawings.
  • How to communicate with relays and test-sets.
  • How to build effective and efficient test plans.
  • How to apply basic relay testing procedures.
  • What is digital relay logic and how do I test it?

Who should take this class?

Anyone who wants to learn more about relay testing, but doesn’t know where to start; or an inexperienced relay tester who has been thrown to the wolves on projects and is tired of winging it.

Where do I take this class?

We can bring the Introduction to Modern Relay Protection Testing Class to your location. Please request more information with this form.

Don’t have enough personnel to make it cost effective to bring our instructor to you?  Contact us to see if we can minimize your costs by creating an open-registration, regional training class near your location.

What prerequisites are required?

Prospective students should have a basic understanding of the power system such as Watts, VARs, Ohm’s Law, etc.

Which topics will be covered?

Day 1 Topics

  1. Class Introduction
  2. Power System Basics
  3. Protective Relay Introduction
  4. Phasor Diagrams

Day 2 Topics

  1. Comparing Drawings
  2. IEEE Designations (50/51/67/etc.)
  3. Communication Protocols
  4. Communicating with Relays

Day 3 Topics

  1. Understanding Relay Settings
  2. Relay Testing Techniques
  3. Digital Logic
  4. Creating Test Plans
  5. Applying Test Plans

How much does the class cost?

Classes at your location range from $5,000 to $7,500 USD depending on the number of workstations required.

What kind of credits do I get?

The Introduction to Modern Relay Protection Testing class is eligible for 24 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.


We also have the following protective relay testing classes available.  Click on any link to learn more:

8 reviews for Introduction to Modern Relay Protection Testing

  1. Rated 5 out of 5

    Travis Scaife, Electrical Reliability Services

    Someone should take this course whether they know everything about relays or know nothing about them at all. Anyone could walk into this course and learn something. For those who have low experience with testing relays, this class will start you off on the right path to becoming a great relay tester.

  2. Rated 5 out of 5

    Brad with Emerson

    If someone wants to gain a better understanding of basic protection schemes this is a good starting point.

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  4. Rated 5 out of 5

    Relay Course Evaluation

    I would recommend this coarse before any other coarse because it covers information that you need in the beginning of relay testing.

  5. Rated 5 out of 5

    customer review

    Very well instructed, and great course.

  6. Rated 5 out of 5

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  7. Rated 5 out of 5

    Tony Pino

    This course helped me understand what true relay testing is, Dynamic testing is truly fun to learn & not so boring as you would just button pushing.

    You wont regret it.

  8. Rated 5 out of 5

    Relay Course Evaluation

    What did you enjoy most about the course?
    Learning to test the elements manually without the use of automated software and being shown how the relay actually operates and senses readings.

    Understanding phase angle relationships to simulate faults.

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