Vibration and development of pearl-chain-type tree in silicone gel under AC voltage

Author

Fujii, Masahiro ; Ueda, Ryosuke ; Hyeon-Gu Jeon ; Ihori, Haruo

Author_Institution

Dept. of Mater. Sci. & Biotechnol., Ehime Univ., Matsuyama, Japan

fYear

2014

fDate

1-5 June 2014

Firstpage

319

Lastpage

322

Abstract

Pearl-chain-type trees under AC voltage have been observed using a high-speed camera. When AC voltage (60Hz) was applied, a bubble was appeared at a tip of needle electrode in silicone gel. The bubble oscillated with 120Hz. After increasing the applied voltage, a linear tree/tube proceeded ahead a certain distance and stopped. Then the bubble was formed at the tips of the tree/tube. The speed of the part of the bubble was slower than the speed of the linear tube. The branching also occurred. This kind of tree is called pearl-chain-type tree. It was observed that the center of the bubble was located slightly from the tip inward.

Keywords

bubble chambers; gels; silicone insulation; trees (electrical); AC voltage; bubble speed; frequency 120 Hz; frequency 60 Hz; high-speed camera; linear tree; linear tube; needle electrode; pearl-chain-type tree; silicone gel; Charge coupled devices; Electrodes; Electron tubes; Materials; Radiation detectors; AC voltage; electrical tree; pearl-chain-type tree; silicone gel;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials (ISEIM), Proceedings of 2014 International Symposium on

Conference_Location

Niigata

Type

conf

DOI

10.1109/ISEIM.2014.6870783

Filename

6870783