Modern protective relays are becoming increasingly powerful and complex, but many relay testers use test procedures and philosophies that are based on previous generations of relays and their limitations. Modern relays have very different characteristics which require a different testing philosophy to ensure they will operate correctly when required. This compilation includes all of the previously released packages from The Relay Testing Handbook that discuss the generic principals of relay testing for modern digital relays. Step-by-step instructions for individual elements will be discussed in upcoming packages and compiled together in a future compilation.

This compilation describes:

1. Electrical fundamentals that all relay testers should understand including phasors, transformer connections and operation, symmetrical components, and grounding.
2. A brief introduction to protective relays and how relays have evolved over the years.
3. Relay testing fundamentals including different test philosophies and test techniques.
4. Test sheets and documentation that should be included in every relay testing report
5. The most commonly applied digital logic interfaces with detailed instructions and plenty of examples to help the tester convert and understand the different logic so that they understand what functions the relay is programmed to perform.
6. A step-by-step procedure that will allow the reader to create and implement a protective relay test plan. The procedure follows a logical progression that can be applied to nearly every application and ensures accurate and efficient relay testing that includes the following steps.

This download includes all of the Relay Testing Handbook Packages 1-4 in one file.

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