High Voltage Protection for Telecommunications [Hardcover]

There is growing concern that new engineers, planners, and field technicians are not aware of the danger and reliability issues surrounding proper protection of telecommunications circuits. Using a practical, hands-on approach, High Voltage Protection for Telecommunications combines all the essential information and key issues into one book. Designed for professional training and self-study, the text will help guide managers, engineers, planners, and technicians through the process of planning, designing, installing, and maintaining safe and reliable data and voice communications circuits that are exposed to High Voltage events.

Preface ix

Acknowledgments xiii

About the Author xv

1 Overview of High Voltage Protection for Telecommunications 1

Basic Purpose and Applications 2

The HV Protection Challenge 3

HV Isolation Standards 7

2 Electric Power System Fundamentals 11

Power Terminology for Telecommunications 12

Electric Power System Overview 21

AC Voltage Generation 23

Substation Equipment 31

Transmission Lines 44

Distribution Lines 45

System Protection Equipment and Concepts 47

3 Ground Potential Rise (GPR) and Zone of Influence 63

Introduction to Ground Potential Rise (GPR) 64

GPR 65

GPR Locations 66

Factors Affecting GPR 71

Calculation of GPR 86

ZOI 88

Earth Resistivity 91

GPR and ZOI Calculation Methods 95

Lightning Faults 107

Electromagnetic Induction under Fault Conditions 109

Total Electrical lCx