The Vacuum Interrupter: Theory, Design, and Application, 1st Edition (Hardback) book cover

The Vacuum Interrupter

Theory, Design, and Application, 1st Edition

By Paul G. Slade

CRC Press

528 pages | 438 B/W Illus.

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Hardback: 9780849390913
pub: 2007-11-14
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Description

Drawn from the author's more than four decades of practical experience in the industry, The Vacuum Interrupter: Theory, Design, and Application first discusses the design and manufacture of the vacuum interrupter before delving into its general application.

The book begins with a review of the vacuum breakdown process and what to consider when developing a design for a high-voltage application. It then discusses the vacuum arc and how its appearance changes as a function of current. This section concludes with an overview of existing contact materials, a summary of their advantages and disadvantages, an analysis of vacuum interrupter contact design, and considerations for the manufacture of vacuum interrupters. The next section on application describes the interruption process for low- and high-current vacuum arcs, examines the voltage escalation event that occurs if the contact gap is very small at the ac current zero, and explores the phenomenon of contact welding. It also studies the application of vacuum interrupters to switch load currents, circuit breakers, and reclosers.

Owing to the increasing need for environmentally friendly interrupting systems, the development of vacuum interrupters will only intensify over time. With extensive references in each chapter for further exploration, this comprehensive guide provides essential, up-to-date knowledge to fully understand this vital technology.

Reviews

"The author has produced a classic book. It contains all the essential background needed for a reader to become well-versed in vacuum interrupter technology and it will be referenced for many years to come . . . Those working in the field of vacuum interrupter design would obviously be interested in this book, and those who perform or are interested in the vacuum arc switching technology would also find it an outstanding book that will be used for many years to come."

– In IEEE Electrical Insulation Magazine, January/ February 2009, Vol. 25, No. 1

Table of Contents

PREFACE

INTRODUCTION

VACUUM INTERRUPTER THEORY AND DESIGN

HIGH-VOLTAGE VACUUM INTERRUPTER DESIGN

Introduction

The External Design

Electrical Breakdown in Vacuum

Internal Vacuum Interrupter Design

X-Ray Emission

Arc Initiation When Closing a Vacuum Interrupter

References

THE VACUUM ARC

The Closed Contact

The Formation of the Vacuum Arc during Contact Opening

The Diffuse Vacuum Arc

The Columnar Vacuum Arc

The Transition Vacuum Arc

The Interaction of the Vacuum Arc and a Transverse Magnetic Field

The Vacuum Arc and an Axial Magnetic Field

Overview

References

THE MATERIALS, THE DESIGN, AND THE MANUFACTURE OF THE VACUUM INTERRUPTER

Introduction

Vacuum Interrupter Contact Materials

The Contact Structures for the Vacuum Interrupter

Other Vacuum Interrupter Design Features

Vacuum Interrupter Manufacture

References

VACUUM INTERRUPTER APPLICATION

GENERAL ASPECTS OF VACUUM INTERRUPTER APPLICATION

Introduction

The Interruption of AC Circuits

Interruption of AC Circuits When the Contacts Open Just before Current Zero

Contact Welding

References

APPLICATION OF THE VACUUM INTERRUPTER FOR SWITCHING LOAD CURRENTS

Introduction

Load Current Switching

Switching Inductive Circuits

Vacuum Contactors

Switching Capacitor Circuits

Vacuum Interrupters for Circuit Switching, Circuit Isolation, and Circuit Grounding

Summary

References

CIRCUIT PROTECTION, VACUUM CIRCUIT BREAKERS, AND RECLOSERS

Introduction

Load Currents

Short-Circuit Currents

Late Breakdowns and Nonsustained Disruptive Discharges

Vacuum Circuit Breaker Design

Vacuum Circuit Breaker Testing and Certification

Vacuum Circuit Breakers for Capacitor Switching, Cable and Line Switching, and Motor Switching

Application of Vacuum Circuit Breakers

Concluding Summary

References

AUTHOR INDEX

SUBJECT INDEX

Subject Categories

BISAC Subject Codes/Headings:
SCI055000
SCIENCE / Physics
TEC007000
TECHNOLOGY & ENGINEERING / Electrical
TEC008010
TECHNOLOGY & ENGINEERING / Electronics / Circuits / General