Description: "In this edition we have taken note of the thoughtful comments of several reviewers and made changes to include recent references to IEEE and IEC standards as they address relaying issues. We have also updated many of the chapters with present day practices and technologies and provided new references to additional and updated IEEE and IEC standards. We have also added a new Chapter 16 with solutions to the problems which appear at the end of many chapters. In the past the solutions were provided to instructors who requested them for use in their protection classes. We believe including the solutions in the book itself will make them more useful to the instructors as well as the students"--