Discussion on process of gas evolution and absorption in vacuum interrupter during arcing

Author

Weizhong, Wu ; Yuan Fuxing

Author_Institution

Xian High Voltage Apparatus Res. Inst., China

Volume

1

fYear

2000

fDate

18-22 Sept. 2000

Firstpage

273

Abstract

The dynamic process of gas evolution and absorption for copper based and copper-chromium (CuCr50) contact materials when breaking high current in vacuum was investigated. It is concluded that exists a stable pressure and the stable pressure is mainly determined by gas content and adsorption energy of contact material. Calculation shows that for copper based contact material in breaking high AC current, the gas content must be lower than 100 ppm (at); for Cu-Cr contact material, it has high enough capability in breaking current even though the gas content is as high as 2000 ppm (at).

Keywords

absorption; circuit-breaking arcs; pressure; vacuum insulation; vacuum interrupters; CuCr; CuCr50 contact materials; adsorption energy; arcing; gas absorption process; gas content; gas evolution process; high-current breaking; stable pressure; vacuum interrupter; Absorption; Atomic layer deposition; Cathodes; Chromium; Copper; Inorganic materials; Interrupters; MONOS devices; Vacuum arcs; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2000. Proceedings. ISDEIV. XIXth International Symposium on

Conference_Location

Xi´an, China

Print_ISBN

0-7803-5791-4

Type

conf

DOI

10.1109/DEIV.2000.877303

Filename

877303