On the basis of the are volt-ampere characteristics, the ar energy, the restriking voltage on the ar gap and the ar movement in the deion type of arc-chute, a theoretical analysis is made for the influence of power frequency on switching apparatus. 根据电弧的伏安特性、电弧的能量、电弧间隙上的恢复电压和电弧在去离子栅灭弧室中运动等四个方面,从理论上分析电源频率对开关电器的影响。