污秽合成绝缘子在酸雾、盐雾中闪络电压随污秽程度的增大而降低，随雾水电导率的增加而降低。

The flashover voltage of polluted composite insulators is decreased with increase of SDD and the fog conductivity in acid fog and salt fog.

不同型式染污绝缘子沿爬电距离的闪络电压梯度；

The voltage gradient of five types of polluted insulators according to the leakage distance.