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接地电阻测试仪的测量方法及原理介绍

发布时间:2017-06-01 04:46:13 分类:新闻动态 来源: 点击:次

接地电阻测试仪的测量方法及原理介绍 接地电阻测试仪的测量方法及原理介绍 接地电阻测试仪的丈量方法及原理介绍   市场上接地电阻测试仪有千百种,常常会让采购商有种眼花缭乱的感觉,不知道那种仪器的丈量法师合适自己,简单概括1下接地电阻测试仪的相干丈量方法,归纳起来它其实可以分为3大类:地桩与钳夹结合法,打地桩法、钳夹法、。   1、地桩与钳夹结合法:这类方法又叫选择电极法   这类方法的丈量原理同4线法,由于在利用欧姆定律计算结果时,其电流值由外置的电流钳测得,而不是象4线法那样由内部的电路测得,因此极大地增加了丈量的适用范围。特别是解决了输电杆塔多点接地并且地下有金属连接的问题。   2、打地桩法:地桩法可分为2线法、3线法和4线法   12线法:这是最初的丈量方法:行将1根线接在被测接地体上,另外一根接辅助地极。此法的丈量结果R=接地电阻+地桩电阻+引线及接触电阻,所 接地电阻测试仪的丈量方法及原理介绍   市场上接地电阻测试仪有千百种,常常会让采购商有种眼花缭乱的感觉,不知道那种仪器的丈量法师合适自己,简单概括1下接地电阻测试仪的相干丈量方法,归纳起来它其实可以分为3大类:地桩与钳夹结合法,打地桩法、钳夹法、。

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