The Relay Testing Handbook PDF Digital Version is Now Available

You can now purchase The Relay Testing Handbook pdf copies of any book in The Relay Testing Handbook series at our online store.

The Relay Testing Handbooks are a series of books that have been written from the relay tester’s perspective to concentrate on the principles and practical questions that every relay tester should be familiar with. Unlike your typical electrical book which is typically written from an electrical engineer’s perspective, these protective relay testing handbooks give practical examples of protective elements, with examples, and step-by-step test procedures that can be used in nearly every relay testing environment.

The complete Relay Testing Handbook series cover the following topics:

  • Electrical fundamentals including three-phase electricity, phasor diagrams, and fault types
  • Relay testing fundamentals including what equipment you need and how to use it
  • The most commonly used testing philosophies, and the most efficient and effective ones
  • How to translate digital logic used by relay manufacturers into familiar concepts
  • Best practices for creating and implementing test plans

Entire chapters are dedicated to the most commonly used protective elements including:

  • Overvoltage, undervoltage, and frequency (59/27/81)
  • Time, instantaneous, and directional overcurrent (51/50/67)
  • Simple and transformer differential (87) testing with three or six current channels
  • Line distance (21) testing using realistic test plans to minimize setting changes

Each protective element chapter includes:

  • A description of operation written for a relay tester, not for a design engineer
  • Step-by-step test techniques that maximize your effectiveness and efficiency
  • Realistic examples from various relay manufacturers and models


These digital downloads were created in Adobe Acrobat 9.0 and can be viewed by any device that can open a secured PDF file including the free Adobe Reader program.

Customers who have already purchased any version of The Relay Testing Handbook from any source will receive a 50% discount code on any digital order by submitting proof of purchase to [email protected].

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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