Search Results: 'overvoltage'
The Relay Testing Handbook: Principles and Practice
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This hardback book includes most of the volumes in the The Relay Testing Handbook series and includes: Electrical fundamentals; Relay testing fundamentals; How to translate digital logic used by... More > relay manufacturers into familiar concepts; and Best practices for creating and implementing test plans. Entire chapters are dedicated to the most commonly used protective elements including: Overvoltage, undervoltage, and frequency (59/27/81); Time, instantaneous, and directional overcurrent (51/50/67); Simple and transformer differential (87) testing with three or six current channels; and Line distance (21) testing using realistic test plans to minimize setting changes. Each protective element chapter includes: A description of operation written for a relay tester, not for a design engineer; Step-by-step test techniques that maximize your effectiveness and efficiency; Realistic examples from various relay manufacturers and models. Go to http://valenceonline.com/ for more information.< Less
The Relay Testing Handbook #5: Testing Voltage Protection (59/27/81)
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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... More > (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. Go to http://valenceonline.com for more information< Less
High Voltage Engineering - Practice and Theory
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This book is a basic student’s guide to the practice and theory of high voltage engineering. Electrical engineers, utility staff and consultants will also greatly benefit. The book includes the... More > following topics: High Voltage Power Systems, Electrostatic Fields, Gas discharges, Solid and Liquid Insulating Materials, Composite Insulation Systems, High Voltage Laboratory Tests, Power System Overvoltages and Insulation Coordination, and Electrical Safety when dealing with High Voltage. The theory is presented in an easy to understand manner using practical worked out examples and laboratory experiments. IEC standards and SI units are used throughout. Everything a student needs to know about the basic practice and theory of high voltage engineering . . .< Less
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