蔡河章（三明市气象局，福建省三明市 365000）

Grounding Resistance Measurement

Huang Shengjin（Zhangzhou Meteorological Office，Zhangzhou 363000，Fujian Province，China）

Cai Hezhang（Sanming Meteorological Office，Sanming 365000，Fujian Province，China）

 

    Abstract The measuring principles of grounding resistance by three-point method are introduced. Combined with actual cases，different measured values on the grounding resistance testing instrument at various positions in the grounding network are analyzed，and it is concluded that the current electrode and voltage electrode must be reasonably arranged according to different structural conditions of grounding network in the test for grounding resistance.

    Key words Grounding resistance measurement Measuring principle Error analysis Voltage electrode Current electrode Testing electrode

 

    摘 要 介绍三点法接地电阻测量原理，结合实际案例，分析接地电阻测试仪表探针在地网中布置位置不同产生的不同测量值，得出在接地电阻检测中必须根据不同的地网结构状况，对电流极、电压极进行合理布置。

    关键词 接地电阻测量 测量原理 误差分析     电压极 电流极 测试极