+44 330 818 7254Anggoro B. and Ihwan C.
Electrical energy is a importance thing for all of human life, but at the same time the electrical energy is dangerous for that life if it’s not installed in a good conditions. For making a good condition of electrical installation so all of the life part of this installation that must be zero potential have to be grounded. In case of fault of installation or insulation that make the body or casing of electrical equipments so the touch potential / voltage occur, the touch voltage must not be more than 50 volt. This condition can be made by grounding systems that connected to this body and this grounding resistance must be small. We have known well that at the time fault the condition of current is high and the frequency is also high. The resistance or impedance of grounding systems that is injected by high frequency current in not the same value that it is injected by DC currents or low frequency currents. This fenomena is caused by the grounding impedance is not only resistance but also the inductance and capacitance at high frequency. In this paper is reported the result of laboratory experiments with the simulation of grounding systems in scaling down. The measurements in this experiments use the fall of potential method. Special grounding systems for body or casing of equipments, the impedance is small and this value can be obtained by buried the grounding electrode so deeply
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