Experimental Study On Ground Resistance Reduction Based On Earth Electrode

Mohd Rizal, Ahmad Saroni (2013) Experimental Study On Ground Resistance Reduction Based On Earth Electrode. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Grounding of electrical installation is primarily c.oncem with ensuring safety. The main usage of groundjng 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. Otherwise, current may flow through to those who touch the damage electrical equipment instead of flowing through grounding system. In this project, a variety diameter of copper rod and Gl pipe are instaJied to build six grounding system. Each system consist 3 rods with same type aRd diameter. The aim of this research is to find if there exist the different in the value of resistance for different diameter and different type of rod is used. In this research, the Kyoritsu Digital Earth Tester will be used to measure the value of earth resistance. The length of rod used is 1.5 meter. The Fall of Potential method wiU be used for this project to find the value of the resistance. Single rod testing and paralleled rod testing is performed in the project. From the result of the research, the value of earth resistance for the grounding system that has big diameter rod and small diameter rod was expected will almost same. The grounding system that use GI pipe, has lower earth resistance value than copper. The measured paralleled vatue resistance must near the calculation value that count using formula by the data from the single rod testing.

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