Experimental study of CF4 insulation performance

The insulation characteristic of high voltage circuit breaker in cold regions is the basis for the design of high voltage circuit breaker. In this paper, several gas of physical and insulated properties can be used in cold region circuit breaker are compares, CF₄ gas was fed to use gas for cold region circuit breaker is obtained. Breakdown experiment of CF₄ under typical electrodes was investigated, and the insulation performance of CF₄ under short gap is obtained. The necessary basic data of CF₄ mixed gas circuit breaker insulation and interruption performance research for cold region are provided.