Future trends in vacuum technology applications

Author

Fink, H. ; Renz, R.

Author_Institution

ABB Calor Emag Mittelspannung GmbH, Germany

fYear

2002

fDate

2002

Firstpage

25

Lastpage

29

Abstract

In the medium voltage range the vacuum switching principle is well established. Today vacuum circuit breakers are available up to 52 kV rated voltage and 80 kA short-circuit current. Based on long term experiences and knowledge from basic research development there is a clear progress into lower and higher voltage ranges and highest interrupting capabilities. In addition to expansion of ratings also new applications for the vacuum technology have been attained. For example loadbreakers and recloser as well as transformer tap changers make more and more use of vacuum tubes. Field experiences reveal high reliability of the vacuum chambers with mean time to failure (MTTF) of several tenthousands of tubeyears. Due to high-tech production processes and modem tube designs vacuum switching devices today are maintenance-free.

Keywords

electric strength; reliability; switching; vacuum circuit breakers; 52 kV; 80 kA; future trends; interrupting capabilities; loadbreakers; mean time to failure; recloser; short-circuit current; transformer tap changers; vacuum chamber reliability; vacuum circuit breakers; vacuum switching devices; vacuum switching principle; vacuum technology applications; vacuum tubes; Circuit breakers; Contacts; Electron tubes; Interrupters; Magnetic fields; Magnetic switching; Medium voltage; Power generation; Vacuum systems; Vacuum technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on

Print_ISBN

0-7803-7394-4

Type

conf

DOI

10.1109/ISDEIV.2002.1027302

Filename

1027302