Research Article Open Access

Correlation Between Steady State and Impulse Earth Resistance Values

N. Mohamad Nor1 and R. Rajab2
  • 1 , Afganistan
  • 2 ,
American Journal of Applied Sciences
Volume 6 No. 6, 2009, 1139-1142

DOI: https://doi.org/10.3844/ajassp.2009.1139.1142

Submitted On: 13 February 2008 Published On: 30 June 2009

How to Cite: Nor, N. M. & Rajab, R. (2009). Correlation Between Steady State and Impulse Earth Resistance Values. American Journal of Applied Sciences, 6(6), 1139-1142. https://doi.org/10.3844/ajassp.2009.1139.1142

Abstract

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.

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Keywords

  • Earthing systems
  • low magnitude current
  • low frequency currents
  • fast impulses