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Author: Allan Greenwood
Publisher: IET
ISBN: 9780852968550
Category : Science
Languages : en
Pages : 294
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Book Description
Drawing from his 40 years of experience in the field, Greenwood (engineering, Rensselaer Polytechnic) describes the development of vacuum switchgear technology from its earliest origins to the most recent designs now offered by companies around the world. The volume begins with a foundation in the physics of the vacuum arc, in vacuum breakdown, and in the fundamentals of current interruption in vacuum. A chapter on applications spans all devices from contactors through switches and reclosers to power circuit breakers. Maintenance is also addressed. There are four chapters on different aspects of design and another on testing. The chapter on manufacturing concentrates on the interrupter as its manufacture is so entirely different from that required for oil and gas-blast circuit breakers. Thoroughly illustrated. Distributed by INSPEC. Annotation copyright by Book News, Inc., Portland, OR
Author: Allan Greenwood
Publisher: IET
ISBN: 9780852968550
Category : Science
Languages : en
Pages : 294
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Book Description
Drawing from his 40 years of experience in the field, Greenwood (engineering, Rensselaer Polytechnic) describes the development of vacuum switchgear technology from its earliest origins to the most recent designs now offered by companies around the world. The volume begins with a foundation in the physics of the vacuum arc, in vacuum breakdown, and in the fundamentals of current interruption in vacuum. A chapter on applications spans all devices from contactors through switches and reclosers to power circuit breakers. Maintenance is also addressed. There are four chapters on different aspects of design and another on testing. The chapter on manufacturing concentrates on the interrupter as its manufacture is so entirely different from that required for oil and gas-blast circuit breakers. Thoroughly illustrated. Distributed by INSPEC. Annotation copyright by Book News, Inc., Portland, OR
Author: W. S. Emmerich
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 48
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Book Description
Author: Zhiyuan Liu
Publisher: Springer Nature
ISBN: 9811613982
Category : Technology & Engineering
Languages : en
Pages : 421
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Book Description
Vacuum circuit breakers are widely used in distribution power systems for their advantages such as maintenance free and eco-friendly. Nowadays, most circuit breakers used at transmission voltage level are SF6 circuit breakers, but the SF6 they emit is one of the six greenhouse gases defined in Kyoto Protocol. Therefore, the development of transmission voltage level vacuum circuit breaker can help the environment. The switching arc phenomena in transmission voltage level vacuum circuit breakers are key issues to explore. This book focuses on the high-current vacuum arcs phenomena at transmission voltage level, especially on the anode spot phenomena, which significantly influence the success or failure of the short circuit current interruption. Then, it addresses the dielectric recovery property in current interruption. Next it explains how to determine the closing/opening displacement curve of transmission voltage level vacuum circuit breakers based on the vacuum arc phenomena. After that, it explains how to determine key design parameters for vacuum interrupters and vacuum circuit breakers at transmission voltage level. At the end, the most challenging issue for vacuum circuit breakers, capacitive switching in vacuum, is addressed. The contents of this book will benefit researchers and engineers in the field of power engineering, especially in the field of power circuit breakers and power switching technology.
Author: Paul G. Slade
Publisher: CRC Press
ISBN: 100017008X
Category : Technology & Engineering
Languages : en
Pages : 699
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Book Description
Title: The Vacuum Interrupter: Theory, Design, and Application Shelving guide: Electrical Engineering Dr. Paul Slade draws from his nearly six decades of active experience to develop this second edition of The Vacuum Interrupter: Theory, Design, and Application. This book begins by discussing the design requirements for high voltage vacuum interrupters and then the contact requirements to interrupt the vacuum arc. It then continues by describing the various applications in which the vacuum interrupter is generally utilized. Part 1 of this book begins with a detailed review of the vacuum breakdown process. It continues by covering the steps necessary for the design and the manufacture of a successful vacuum interrupter. The vacuum arc is then discussed, including how it is affected as a function of current. An overview of the development and use of practical contact materials, along with their advantages and disadvantages, follows. Contact designs that are introduced to control the high current vacuum arc are also analyzed. Part 2, on application, begins with a discussion of the arc interruption process for low current and high current vacuum arcs. It examines the voltage escalation phenomenon that can occur when interrupting inductive circuits. The occurrence of contact welding for closed contacts subjected to the passage of high currents, and for contacts when closing on high currents, is explored. The general requirements for the successful manufacture and testing of vacuum circuit breakers is then presented. The general application of vacuum interrupters to switch load currents, especially when applied to capacitor circuits, is also given. The interruption of high short circuit currents is presented along with the expected performance of the two major contact designs. Owing to the ever-increasing need for environmentally friendly circuit protection devices, the development and application of the vacuum interrupter will only increase in the future. At present the vacuum circuit breaker is the technology of choice for distribution circuits (5kV to 40.5kV). It is increasingly being applied to transmission circuits (72.5kV to 242kV). In the future, its application for protecting high voltage DC networks is assured. Audience This is a practical source book for engineers and scientists interested in studying the development and application of the vacuum interrupter Research scientists in industry and universities Graduate students beginning their study of vacuum interrupter phenomena Design engineers applying vacuum interrupters in vacuum switches, vacuum contactors, vacuum circuit breakers, and vacuum contactors It provides a unique and comprehensive review of all aspects of vacuum interrupter technology for those new to the subject and for those who wish to obtain a deeper understanding of its science and application Scientists and engineers, who are beginning their research into vacuum breakdown and aspects of the vacuum arc, will find the extensive bibliography and phenomenological descriptions to be a useful introduction
Author: Clarence W. Wieske
Publisher:
ISBN:
Category : Vacuum switches
Languages : en
Pages : 12
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Book Description
The purpose of this report is to summarize the changes and improvements made on the hot-wire vacuum switch since the original report, Vacuum Special No. 15.
Author: Clarence W. Wieske
Publisher:
ISBN:
Category : Vacuum switches
Languages : en
Pages : 14
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Book Description
Author: Yuan Jiang
Publisher: Springer Nature
ISBN: 9813347813
Category : Technology & Engineering
Languages : en
Pages : 129
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Book Description
This book introduces the concepts of more electric aircraft and aviation electrical appliances, as well as the aviation experimental platform of vacuum switches, the interruption characteristics, frequency characteristics and post-arc breakdown characteristics of intermediate frequency vacuum switches, etc. It is the first monograph on protection electrical appliances, vacuum interrupter in aviation variable frequency power system. This book includes a lot of experimental process and chart analysis for readers to understand and provides references for practical engineering problems. This book could be used as references for engineers and technicians working on electric power systems in aircrafts.
Author: Thomas C. Scanlan
Publisher: Surplus Record
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 724
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Book Description
SURPLUS RECORD, is the leading independent business directory of new and used capital equipment, machine tools, machinery, and industrial equipment, listing over 110,000 industrial assets; including metalworking and fabricating machine tools, chemical and process equipment, cranes, air compressors, pumps, motors, circuit breakers, generators, transformers, turbines, and more. Over 1,100 businesses list with the SURPLUS RECORD. March 2022 issue. Vol. 100, No. 1
Author: J. Paul Guyer, P.E., R.A.
Publisher: Guyer Partners
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 53
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Book Description
Technical guidance for electrical engineers interested in protective and switching devices for electric distribution systems. Here is what is discussed: 1. CIRCUIT INTERRUPTING DEVICES 2. LOCATION OF PROTECTIVE AND SWITCHING DEVICES 3. PROTECTIVE AND SWITCHING DEVICE INSTRUCTION MANUALS 4. PROTECTIVE AND SWITCHING DEVICE RECORDS 5. FUSE USAGE 6. FUSE OPERATING SAFETY CONSIDERATIONS 7. FUSE REPLACEMENT 8. FUSE MAINTENANCE 9. SWITCH USAGE. SOME PREDETERMINED CURRENT OVERLOAD 10. OPERATION OF SWITCHES 11. SWITCH MAINTENANCE 12. CIRCUIT BREAKER USAGE 13. FREQUENCY OF CIRCUIT BREAKER MAINTENANCE 14. MAINTENANCE OF NONMETALCLAD SWITCHGEAR CIRCUIT BREAKERS 15. MAINTENANCE OF METALCLAD CIRCUIT BREAKERS 16. MAINTENANCE OF LOW-VOLTAGE POWER CIRCUIT BREAKERS 17. REPAIR OF CIRCUIT BREAKERS 18. CIRCUIT SWITCHERS 19. AUTOMATIC CIRCUIT RECLOSERS
Author: Surplus Record
Publisher: Surplus Record
ISBN:
Category : Reference
Languages : en
Pages : 720
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Book Description
SURPLUS RECORD, is the leading independent business directory of new and used capital equipment, machine tools, machinery, and industrial equipment, listing over 95,000 industrial assets; including metalworking and fabricating machine tools, chemical and process equipment, cranes, air compressors, pumps, motors, circuit breakers, generators, transformers, turbines, and more. Over 1,100 businesses list with the SURPLUS RECORD. May 2022 issue. Vol. 99, No. 5
