DC pre-breakdown phenomena and breakdown characteristics in the presence of metallic particle in liquid nitrogen

Author

Hara, M. ; Suehiro, J. ; Maeda, H. ; Nakashima, H.

Author_Institution

Dept. of Electr. & Electron. Syst. Eng., Kyushu Univ., Fukuoka, Japan

fYear

1999

fDate

1999

Firstpage

457

Lastpage

461

Abstract

DC pre-breakdown phenomena and breakdown characteristics in the presence of free metallic particle in liquid nitrogen are studied experimentally. The results show that microdischarge occurs when a charged particle is approaching oppositely charged electrodes and intense microdischarge can trigger the complete breakdown of the tested gap. The breakdown voltage of uniform field gap with the free particle might severely fall below that of a point-to-plane gap without particle in liquid nitrogen

Keywords

dielectric liquids; electric breakdown; insulating oils; nitrogen; DC pre-breakdown phenomena; N₂; breakdown characteristics; breakdown voltage; charged particle; free metallic particle; free particle; intense microdischarge; liquid N₂; metallic particle; microdischarge; point-to-plane gap; uniform field gap; Contamination; Current measurement; Electric breakdown; Electrical resistance measurement; Electrodes; Glass; Needles; Nitrogen; Pollution measurement; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on

Conference_Location

Nara

Print_ISBN

0-7803-4759-5

Type

conf

DOI

10.1109/ICDL.1999.798971

Filename

798971