接地导通电阻测试仪的两种校准方法研究

Research on Two Calibration Methods for Earth-continuity Tester

接地导通电阻测试仪是一种在日常电气安全检测过程中较为常用的电气安全测试设备。介绍了国产与进口两种标准器的主要指标,阐述了这两种标准器在校准接地导通电阻测试仪时用到的方法,并给出了用两种标准器评定得到的测量不确定度,通过比较,便于计量工作者结合需求选择更合适的标准器具。

Earth-continuity tester is a commonly used electrical safety testing equipment in daily electrical safety testing processes.The main indicators of domestic and imported standards are introduced,the methods used by these two standards in calibrating the earth-continuity tester are explained,and the measurement uncertainty evaluated using the two standards is provided.By comparison,it is convenient for metrologists to choose more suitable standard instruments based on their needs.