Open AccessCorrelation Between Steady State and Impulse Earth Resistance Values
Author(s) -
N. Mohamad Nor,
R. Rajab
Publication year - 2009
Publication title -
american journal of applied sciences
Language(s) - English
Resource type - Journals
eISSN - 1554-3641
pISSN - 1546-9239
DOI - 10.3844/ajassp.2009.1139.1142
Subject(s) - impulse (physics) , correlation , resistance (ecology) , mathematics , geology , physics , statistics , classical mechanics , geometry , ecology , biology
This study presented experimental results of earthing systems under low-magnitude currents and under high impulse currents. The details of the measuring circuit involved for both types of testing were described. Three field sites were selected. At each site, three earth electrodes configurations were used. This makes up to nine earthing systems. From both low magnitude and impulse tests, the correlation between the steady state earth resistance value and the earth resistance under fast impulse currents can be observed. The relation between the calculated and measured steady state earth resistance is also shown in this study