| Title |
Examinations on the Reasonable Measuring Methods of the Soil Resistivity for Design of Grounding System |
| Authors |
Bok-Hee Lee ; Ki-Bok Kim ; Seung-Hoon Lee ; Jong-Hyuk Choi |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2011.25.6.035 |
| Keywords |
Design of Grounding System ; Soil Resistivity ; Wenner’s Four-Point Method ; Three-Point Method ; Soil Structure |
| Abstract |
In order to design effectively the grounding system, it is very important to determine the optimum soil resistivity at the desired location of the connection to earth. This paper deals with the reasonable methods of measuring the soil resistivity where grounding electrodes are buried. The soil resistivity at three test sites with different resistivity of soil were measured as functions of the spacing between the test probes in the Wenner’s four-point method and the length of test ground rod in the three-point method. In the case of the three-point method, the length of test ground rod of 2-10[m] in length was appropriate in two-layered soil structure. In the length range of 2-10[m], the results measured by the three-point method using the test ground rod with the length corresponding to the spacing between the test probes of the Wenner’s four-point method are in good agreement with the data obtained from the Wenner’s four-point method. |