摘要
针对工程中采用不同的接地电阻测试仪测得的接地电阻值不同的问题,对三点式伏安法测量接地电阻的原理进行了分析和试验。指出测量接地电阻时,必须要考虑电流辅助极的距离对测量结果的影响,一般设置距离不应小于10m。
Aiming at the problem that different tester could measure different value of grounding resistance,the principle of adopting three-points voltammetry to measure grounding resistance was analyzed and tested.It was pointed out that it should consider the effect on measuring result caused by distance of auxiliary current poles when the grounding resistance was measured,the distance should not be shorter than 10 meter.
出处
《现代建筑电气》
2010年第5期60-62,共3页
Modern Architecture Electric
关键词
三点式伏安法
接地电阻
辅助电极
测量
three-points voltammetry method
grounding resistance
auxiliary electrode
measuring
