龔家軍，劉國臻
（十堰市氣象局，湖北 十堰 442000）
摘要：針對防雷檢測工作中經常出現的接地電阻值讀數值不穩定、偏大或偏小，甚至出現檢測值為負值（即偏離真值）情況的現狀，從接地電阻測試儀原理出發，闡述了防雷裝置檢測的方法；歸納總結了造成防雷裝置接地電阻測量值偏離真值的八大常見原因，并分別提出了避免或減小接地電阻值偏離真值的方法。
關鍵詞：防雷檢測；接地電阻；測試原理；偏離真值原因；避免或減小
中圖分類號：TM08 文獻標識碼：A 文章編號：1672-4984(2006)03-0075-03
Discussion on measurement deviation of true value of lightening proteetion earth resistance
GONG Jia-jun， LIU Guo-zhen
(Shiyan Meteorological Bureau, Shiyan 442000，China)
Abstract: In view of the lightening protection examination, the earth resistance value appears frequently unstable, large or small, even appears minus examination value. These are deviation from true value. Base on the earth resistance tester principle, the author first elaborated the lightning protection device examination method, then summarized the eight common causes that deviation often occurred and last proposed methods to avoid or reduce the earth resistance value test deviation.
Key words: Lightening protection examination; Earth resistance; Test principle；Deviation true value reason；Avoids or reduces
