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Basic study on correction method of measured earthing resistance by 4-potential method
Ueta Saki,Takahashi Takehiko 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.10월
The full of potential method is generally used for measuring the earthing-resistance. This method needs two auxiliary electrodes and it is required that two auxiliary electrodes are placed at enough distances from the earthing electrode, e.g. building foundation. However, in urban area there is not enough space for taking measurement. So, it is very difficult to measure the earth resistance precisely. However, there is the 4-potential method when it stand on the theory of the full of potential method. It is the purpose of this paper to basic study on correction method of measured earthing resistance by 4-potential method.