Study on Test Method of Direct Current Reference Voltage and Leakage Current of Zinc Oxide Arrester
The DC reference voltage and leakage current test at 75%of the reference voltage of the zinc oxide lightning arrester at 1 mA are beneficial for checking the DC reference voltage and charging rate of the zinc oxide lightning arrester during normal operation,and are crucial for determining its aging status.For zinc oxide lightning arresters that have already been put into operation,it is necessary to conduct this test regularly in accordance with the preventive testing regulations.In order to reduce operational risks and improve testing efficiency,it is usually necessary to conduct this test without removing the leads.This article studies the DC reference voltage at 1 mA and the leakage current test method at 75%of the reference voltage for a 220 kV lightning arrester with two sections of structure,in order to provide reference for relevant personnel.
zinc oxide arresterDC reference voltage at 1 mAleakage currentdo not remove the leadpreventive test
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