The XHDD402 Zinc Oxide Arrester Characteristic Tester is used to detect internal defects such as poor contact between valve blocks of gapless zinc oxide arresters (MOA) in power systems of 10kV and below規定に従って,電気機器の予防試験コード DL/T596,金属酸化物止め器の0.75U1mAのDC1mA電圧 (U1mA) と漏れ電流は,毎回の雷雨季前および必要に応じて試験しなければならない.