Zinc oxide lightning arrester is a lightning arrester with good protection performance. the good nonlinear volt ampere characteristics of zinc oxide make the current flowing through the arrester very small (micro ampere or milliampere level) under normal working voltage; When over-voltage acts, the resistance drops sharply, and the over-voltage energy is released to achieve the protection effect. the difference between this arrester and the traditional arrester is that it has no discharge gap and uses the nonlinear characteristics of zinc oxide to discharge current and disconnect