As modern protective relays become increasingly more powerful and complex, many relay testers continue to use test procedures and philosophies that are based on previous generations of relays and their limitations. Modern relays have very different characteristics that require a different testing philosophy to ensure that they will operate when required. The Relay Testing Handbook: Testing Voltage Protection (59/27/81) provides step-by-step procedures for testing the most common voltage and frequency protective applications. This volume is designed to help you understand and test: Overvoltage protection (59)Undervoltage protection (27)Over/under frequency protection (81) Each chapter explains the following topics for each element with realistic, practical examples and detailed instructions: Understanding the application Determining which settings are most important Recommended steps to correctly plan, perform, and evaluate pickup tests Recommended steps to correctly plan, perform, and evaluate timing tests Preventing interference from other settings inside the relay Tips and tricks to overcome common obstacles This book is included in the hardcover book The Relay Testing Handbook: Principles and Practice, or it can be ordered by itself as a soft-cover book, Adobe Acrobat PDF digital download, or both. Paperback: 62 pages Trim Size: 8.5"x11" Publisher: Valence Electrical Training Services LLC Language: English ISBN-13: 978-1-934348-11-6 LCCN: 2012934621

As modern protective relays become increasingly more powerful and complex, many relay testers continue to use test procedures and philosophies that are based on previous generations of relays and their limitations. Modern relays have very different characteristics that require a different testing philosophy to ensure that they will operate when required. The Relay Testing Handbook: Creating and Implementing Test Plans outlines step-by-step procedures that will enable you to create and implement protective relay test plans for modern relay systems, ensuring accurate and efficient relay testing for nearly every application. Use the information in this book to: Collect and compare drawings, settings, and engineering studies to evaluate the application Compare all of the available documentation to the manufacturer's literature Prepare to test the relay by correctly isolating it from the rest of the system Establish communication with the relay and apply the settings Properly connect your test-set to the relay Perform acceptance tests Design your test plan using conventional test techniques, or implement more efficient and effective ones Implement your test plan or apply common test plans for feeder, generator, or line protection Prepare your report and test sheets This book is included in the hardcover book The Relay Testing Handbook: Principles and Practice, or it can be ordered by itself as a soft-cover book, Adobe Acrobat PDF digital download, or both. Paperback: 98 pages Trim Size: 8.5"x11" Publisher: Valence Electrical Training Services LLC Language: English ISBN-13: 978-1-934348-07-9 LCCN: 2012934620

Located in the center of Asia with one of the largest land frontiers in the world and 14 neighbors whose dispositions could not easily be predicted, China has long been obsessed with security. In this handbook, an internationally renowned team of contributors provide a comprehensive and systematic analysis of contemporary thinking about Chinese national security. Chapters cover the PRC's historical, ideological and doctrinal heritage related to security, its security arrangements and policies targeting key regions and nations of the world, the security aspects of the PRC's ground, air, sea, space and cyber forces, as well as the changing and expanding definition and scope of China's security theory and practice.