Dyanamic Behavior of Gas-Blasted Arcs in SF6-N2 Mixture

The arc quenching phenomenon in an SF6-N2 mixture was analyzed by using the simulation program developed by the authors. The gas flow from the cylinder to the arc was investigated as a function of SF6-N2 mixing ratio in relation to the configuration of the arc chamber. The pressure rise in the cylinder was measured to confirm the result of the simulation by varying the SF6-N2 mixing ratio. The result of the simulation suggests that the desirable configuration of arc chamber should be changed depending upon the mixing ratio of SF6-N2 mixture.