This book is a must for any engineer new to protective relaying, and who wants to get a clear understanding of protective relaying principles. The reader is introduced to the protection principles of the various plant equipment in a clear and easy to understand manner, starting from the component level, ie relays, current and voltage transfomers. The theory of fault calculations is then explained to refresh the reader's understanding before proceeding with the protective schemes of feeders, transformers, motors and generators. Throughout the book, practical examples complete with circuits diagrams and graphs are used to illustrate and reinforce the concepts taught. Having understood how the relays for the protecting the various equipment are being set, the reader is shown how the relays are being tested prior to commissioning. This section is often skipped in books with a more academic approach, but it is also where the author's practical experience and strength is shared with the reader. Finally, this book is written for the engineer who wants to understand and be "practical" about protective relaying and remain "practical" about it.