The test items of the arrester should include the following:
(1) Measuring the insulation resistance;
(2) Measuring the conductance or leakage current, and checking the non-linear coefficient of the combined components;
(3) Measuring the alternating current conduction current of the magnetic blower arrester;
(4) Measure the continuous current of the metal oxide arrester;
(5) Measure the power frequency reference voltage or DC reference voltage of the metal oxide arrester;
(6) Measure the power frequency discharge voltage of the valve-type arrester