Breakdown of solid insulating materials under high frequency high voltage stress

Author

Elanseralathan, K. ; Thomas, M. Joy ; Nagabhushana, G.R.

Author_Institution

Pondicherry Eng. Coll., India

Volume

2

fYear

2000

fDate

2000

Firstpage

999

Abstract

This paper presents the variation of breakdown voltages experimentally obtained under high frequency high voltage stress on different insulating materials viz., PTFE, polypropylene and paper. An experimental facility using a vacuum tube oscillator circuit has been developed for the generation of high frequency high voltages. The breakdown voltages at high frequencies are found to be much lower than the breakdown voltages at 50 Hz. The cause for lower breakdown voltages could be due to the increased internal heating as well as the intense partial discharge activity taking place within the material

Keywords

electric breakdown; high-frequency effects; organic insulating materials; paper; partial discharges; polymer films; 0.6 to 8.8 kV; 10 to 12.5 mum; 50 Hz to 90 kHz; PTFE; breakdown voltages; high frequency high voltage stress; intense partial discharge activity; internal heating; paper; polypropylene; solid insulating materials; vacuum tube oscillator circuit; Breakdown voltage; Circuits; Electric breakdown; Electron tubes; Frequency; Heating; Insulation; Solids; Stress; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on

Conference_Location

Xi´an

Print_ISBN

0-7803-5459-1

Type

conf

DOI

10.1109/ICPADM.2000.876399

Filename

876399