【摘要】 针对不均匀电场（棒-板间隙）中绝缘板上残余电荷对50％冲击闪络电压U₅₀的影响做了一些试验研究。研究结果表明:在绝缘板上施加不同的电压,板面上将残余不同的电荷;当残余电荷达到一定量时,对U₅₀将有很大的影响;多次施加电压时,积累的残余电荷对U₅₀的影响更大,且使其分散性变大,不易得到真实的U₅₀值.更多还原

【Abstract】 The effect of charges remaining on a dielectric plate upon the 50% impulse surface flashover voltage U₅₀ in the non-uniform field（rod-plane gap）is investigated. The results of research show that the amounts of residual charges on a dielectric plate vary with the values of voltage upon it. The residual charges effect much upon the U₅₀ when they get to some values. Accumulating residual-charges have more effects upon U₅₀, and make dispersity of U₅₀ become wide. So it is not easy to get the true value of U₅₀.更多还原