Reduction of Soil Type Resistance with Grant Gypsum Additives as a Narrow Land Grid-Rod Grounding Media on Clay Soil Texture

Abstract

The area of land where the grounding is located affects the selection of the type of grounding. Narrow land not all types of grounding can be installed. One way that can be done is by applying additive media to reduce the soil retention value. Gypsum additives will be tested in this study. The purpose of this study is to determine the effectiveness of gypsum additive media in the Grid-Rod grounding system of narrow land with clay soil texture and maintain the stability of the resistance value of soil types so that it remains low. The method used in the analysis is a descriptive quantitative method where the results of soil resistance measurements before and after treatment will be used to calculate the grid-rod grounding resistance to obtain a value of < 5 ohms on narrow clay soil texture. The results of the study were obtained by applying gypsum additives to clay soils effectively reducing the resistance value of soil types from 32.65 ohm-meters to 17.85 ohm-meters or a decrease of 46.15%. The application of gypsum additives in clay soil can maintain the stability of the soil type resistance value which results in the stability of the grounding resistance value at a value of < 5 ohms during the dry season so that it is safe for equipment and humans around the distribution substation equipment.