电涌保护器剩余电流检测方法

Detection Method of Leakage Current of Surge Protective Device

电涌保护器是电气设备雷电防护中的一种重要装置,其剩余电流是衡量电涌保护器是否失效的一个重要指标。采用霍尔元件、巨磁电阻和互感线圈3种方法检测电涌保护器的剩余电流,介绍了3种测量方法的基本原理,测量并分析试验数据,总结3种测量方法的优缺点。

Surge protective device was an important device in lightning protection of electrical equipment,and the leakage current of SPD was an important indicator in measuring whether it was failure.The leakage current of SPD was detected by using the Hall element,giant magnetoresistance and mutual inductor.The basic principles three methods of were introduced,and the experimental data was measured and analyzed.The advantages and disadvantages of the three measurement methods were summarized.