三极法与钳表法在接地电阻测量中的对比分析研究

Comparative Analysis of Trlpola Method and Forcephone Method in Grounding Resistance Measurement

为探讨不同测量方法对防雷装置引下线接地阻值测量结果的影响,本文分析了两种测量方法——三极法和钳表法的基本原理和测量方法,并进行了测试数据对比。结果表明,钳表法测量误差极大,且误差无规律可循,修正后与真实值差别较大,必须引起重视。通过对比,三极法测量比较准确。

In order to investigate the effects of different methods of measuring the resistance of electric resistance devices,the paper analyses the basic principles and methods of trlpolar method and forcephone method,contrast the test date of them.The results show that the measurement error of the forcephone method is maximum,trlpolar method is more accurate.