The flashover voltage of three types EHV DC insulators (XZP-160, LXZP-210, XZWP-160) are related power function with the atmospheric pressure and freezing water conductivity.

• XZP-160、LXZP-210和XZWP-160绝缘子的覆冰闪络电压与气压、覆冰水电导率等呈幂函数关系。