American Journal of Applied Sciences

Correlation Between Steady State and Impulse Earth Resistance Values

N. Mohamad Nor and R. Rajab

DOI : 10.3844/ajassp.2009.1139.1142

American Journal of Applied Sciences

Volume 6, Issue 6

Pages 1139-1142


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.


© 2009 N. Mohamad Nor and R. Rajab. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.