Lightning impulse breakdown of ROD-plane gaps in CO2 and CO2/CCl2F2 mixtures

Abstract

Binary and ternary mixtures of electronegative gases are presently being experimented as possible insulants in high voltage power apparatus and systems. In recent times, several investigations have been carried out to determine the breakdown voltages and processes leading to breakdown in such gas mixtures [1-4]. Studies were undertaken at our laboratory to determine the breakdown characteristics of such mixtures using impulse and switching surge voltages, in nonuniform fields. In this paper, some of the interesting results obtained with lightning impulse voltages in CO2 and CO2/CCl2F2 mixtures are reported.