Title

Non-Uniform Field Breakdown of Ar +SF6 under Negative Polarity Impulse Voltages

Document Type

Conference Proceeding

Publication Date

10-26-2008

Publication Title

IEEE Xplore

Conference Name

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

Abstract

In this study, negative-polarity, standard lightning impulse voltages with different magnitudes were employed throughout the experiments. The percentage of SF 6 in Ar was varied from 1% to 90% and from 1% to 75% at a total gas pressure of 50 kPa and 100 kPa, respectively. The breakdown voltage of each gas mixture was recorded at 50% breakdown probability. Similar to earlier studies under static electric fields it is observed that the breakdown voltages of Ar+SF 6 has increased dramatically when mixed with a small percentage of SF 6 under impulse voltages. However, the breakdown voltages were found to be higher than positive polarity, non-uniform and uniform fields.

Comments

Quebec, QC, Canada

Rights Statement

This is a RoMEO green publisher - Must link to publisher version

© Copyright 2008 IEEE

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