Surface-discharge-initiated breakdown in solid dielectrics immersed in high-pressure gaseous mixtures

Preliminary results of investigations into the characteristics of anomalous breakdown phenomena in synthetic solid insulating materials immersed in gaseous mediums and subjected to alternating voltages are reported in this paper. The breakdown voltage of the solid dielectric was found to decrease with increasing gas pressure. In a medium of a gaseous mixture of CCl2F2 and N2, the solid breakdown voltage was also noticed to increase with increasing percentages of nitrogen.