Zinc oxide arrester tester is used for the measurement and analysis of zinc oxide [MOA] leakage current. It is mainly used to measure resistive current, so as to analyze the degree of zinc oxide aging and moisture. The on-site live test is in line with the requirements of the People's Republic of China Electric Power Industry Standard "DL474.5-92 Implementation Guidelines for Field Insulation Test - Lightning Arrester Test". It can also be used for factory and acceptance tests in the laboratory.