氧化锌避雷器运行电压下测量阻性电流

Resistance Current Measurement of Zinc Oxide Surge Arrestor Under Operating Voltage

在运行电压下测量氧化锌避雷器的阻性电流,对于反映MOA是否受潮和其运行的状态具有重要意义。文章介绍了用PT电压法测量MOA阻性电流的基本原理,并提供几种试验结果的判断标准,指出阻性电流的测量对于提高绝缘试验水平,对绝缘监督将起到较大作用。

Resistance current measurement of zinc oxide surge arrestor（MOA） under operating voltage possesses important significance of reflecting the operation state of MOA and whether it incurred damping. The paper introduces the fundamental prieiple of using PT voltage method to measure the resistance current of MOA,and provides the estimation standard for several test results, as well as ind;cates the important effect of the resistance current method which can improve the level of irtsulation test and monitor.