The characteristics of streamers in perfluoro liquids

Author

Miyano, K. ; Yamazawa, K. ; Pompili, M. ; Mazzetti, C. ; Yamashita, H.

Author_Institution

Dept. of Electr. Eng., Keio Univ., Yokohama, Japan

Volume

2

fYear

1997

fDate

19-22, Oct 1997

Firstpage

640

Abstract

This paper describes the effects of molecular structure and physicochemical characteristics on the impulse pre-breakdown phenomena in perfluoro liquids under non-uniform field. The test liquids were two types of PFPE (perfluoro polyether) with different molecular weight, D40 and XAD, and one type of PFC (perfluoro carbon), FC40. An impulse voltage was applied to a needle electrode, and the streamer generated at the needle tip was photographed using a shadowgraph optical system combined with an image converter camera (ICC). The characteristics of streamers in D40 were different compared to those in XAD and FC40. These experimental results show that the effect of viscosity plays an important role in perfluoro liquids rather than molecular structure

Keywords

dielectric liquids; discharges (electric); organic compounds; C40; D40; PFC; PFPE; XAD; image converter camera; impulse pre-breakdown phenomena; molecular structure; needle electrode; nonuniform field; perfluoro carbon; perfluoro liquids; perfluoro polyether; physicochemical characteristics; shadowgraph optical system; streamers; viscosity; Electrodes; Glass; Liquids; Needles; Optical filters; Pulse measurements; Streaming media; Testing; Viscosity; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on

Conference_Location

Minneapolis, MN

Print_ISBN

0-7803-3851-0

Type

conf

DOI

10.1109/CEIDP.1997.641156

Filename

641156