This package provides a step-by-step procedure for testing the most common overcurrent protection applications: Instantaneous Overcurrent (50), Time Overcurrent (51), and Directional Overcurrent (67). Each chapter follows a logical progression to help understand why overcurrent protection is used and how it is applied. Testing procedures are described in detail to ensure that the overcurrent protection has been correctly applied. Each chapter uses the following outline to best describe the element and the test procedures.

1. Application
2. Pickup Testing
3. Timing Tests
4. Tips and Tricks to Overcome Common Obstacles

Real world examples are used to describe each test with detailed instructions to determine what test parameters to use and how to determine if the results are acceptable. Download the e-book at http://www.relaytesting.net/Downloads/Relay_Testing_Handbook6_Testing_Overcurrent_Protection_(50_51_67).exe and review the sample pages to determine if The Relay testing Handbook is right for you. Please send this link or downloaded file to people you think would be interested!

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