A New Approach to Compute Uniform Field Breakdown of Gases

This paper presents a direct method for computing the uniform field breakdown of gases. It has been found that the ac or dc voltage breakdown can be described by the following equation: U=G x dO x t Where 6 is the gas density, d the gap length and G, o, t are constants. The equation has been verified for many usual gases (air, N2, CO2, SF6...) andfor a wide range of pressures and voitageg. The data obtained show a good agreement with the results of many authors including I.E.C. Standard 52.