Analysis Technique of Risk Voltage around Grounding Electrode by New Touch and Step Voltage Measurement Methods
Hyoung-Jun Gil, Hyang-Kon Kim · Journal of the Korean Institute of Illuminating and Electrical Installation Engineers · 2012
This paper describes the analysis technique of risk voltage around grounding electrode by new touch and step voltage measurement methods. We have analyzed three techniques for risk voltage measurement, such as footprint-electrode method, test-probe method, and simulated-personnel method. We have selected test-probe method considering applicability of site. In order to reduce error related to the location of the auxiliary electrode, we propose a new approach to perform risk voltage measurement with minimum errors and short auxiliary electrode distances. Field tests were carried out at a grounding grid. It can be concluded that the proposed method will be satisfactory for risk voltage measurement.