Experimental study on the ground resistance reduction based on earth electrode

Ahmad Tarmizi, Azily (2014) Experimental study on the ground resistance reduction based on earth electrode. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Grounding of electrical installation is primarily concern with ensuring safety. The main purpose of grounding is to channel the fault current straightly to earth. To produce a good grounding system, the value of earth resistance must be reduce as low as possible. In this project, a 3 meter length of copper, GI and pure steel rod will be installed in formatting 12 of grounding system. Six system for single installation and six for parallel installation. The aim of this study is to determine the effect on the resistance value when the soil condition is change and different type of rod is use. Furthermore, the Kyoritsu Digital Earth Tester will be used to measure the value of earth resistance. The diameters of rod are constant for each type of rod. Fall of Potential method will be used for this project to find the value of resistance. Single rod testing and parallel rod testing is performing in this project. From the result, it is expected that, the soil condition surrounding the rods are greatly influenced the value of earth resistance. The grounding system that use galvanized iron (GI) rod has the lower earth resistance compared to copper and steel.

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