Ground Resistance Measurement with Fall-of-Potential Method Using Capacitive Test Probes

This paper presents a novel technique for measuring ground resistance of a grounding system with the fall-of-potential method using capacitive probes. Application of capacitive probes in place of rod probes is quite convenient for ground resistance measurements of grounding systems in urbanized districts where it is difficult to apply the rod probes. Experimental data are presented and results are compared to those of rod probes, and possible sources of errors are explained. It has been shown that the capacitive probes can successfully be used in place of rod probes in fields suffering from hard ground surface structure