Impulse Characteristics of Different Gas Mixtures

Abstract

This study is concerned with experimental investigation of breakdown characteristics of various gas mixtures under different pressures. Pure N2, %50 SF6+%50 N2, %1 SF6+%99 N2 and %1 SF6+%CO2 gas mixtures are used as insulators. Gas pressures are varied between 1 and 10 bar. Weibull statistical analysis are used for evaluation of experimental data and breakdown characteristics are plotted by using least squares regression. As a result of this analytical assessment, the pressures required for safer protection levels are obtained as 1 bar for %50 SF6+%50 N2, 10 bar for %1 SF6+%99 N2, 5 bar for %1 SF6+%99 CO2 gas mixtures and 10 bar for N2. 