N₂／SF⁶ガス中固体絶縁物間隙内の放電進展特性

抄録

The flashover characteristics in Discharge Extension Behavior in Narrow Gap Filled with N₂/SF⁶ Gas between Insulators gas mixtures for the needle-plane electrode configuration with an insulating barrier consisting of two separated insulators with a narrow gap, which is just below and along the needle electrode, have been investigated. The SF₆ gas content dependence of flashover voltage strongly depended on the gap width. And the reduction of flashover voltage by the addition of small amount of SF₆ gas was found for the wider gap width (_??_500um) under the gas pressure of 0.3MPa. Thus anomalous dependence of the flashover voltage should result in the change of the discharge extension path and its behavior in the narrow gap induced by the addition of SF₆ gas into N₂ gas.