Pengaruh Bentonit-MgSO4-Arang dalam Peningkatan Konduktivitas Tanah untuk Aplikasi Pembumian Listrik
DOI:
https://doi.org/10.59086/jti.v5i1.1327Keywords:
Sistem Pembumian, Elektroda, Bentonit, MgSO₄, ArangAbstract
Grounding systems play an important role in safely channeling fault currents and lightning energy, but their performance is often hampered by high-resistivity soil conditions. This study discusses the effect of bentonite as a natural material combined with magnesium sulfate (MgSO₄) and charcoal to improve the performance of grounding systems in low-voltage installations. Tests were conducted using electrodes filled with various material compositions for each medium, namely 60%, 70%, and 80% bentonite mixed with charcoal and MgSO₄. Tests were conducted weekly for 3 weeks at electrode depths of 1.0 m; 1.5 m; and 2.0 m. The results showed that increasing the percentage of bentonite was able to significantly reduce the grounding resistance value compared to the initial soil conditions. The 80% bentonite mixture produced a grounding resistance of 4.7 Ω at a depth of 2 m in the first week, The 80% bentonite mixture produced a grounding resistance of 7.17 in the third week Although there was an increase in resistance as the soil moisture content decreased, all mixture variations still met the requirements of IEEE Std 80-2013. These findings indicate that the combination of bentonite, MgSO₄, and charcoal in the initial test was effective in improving the performance of the grounding system in soils with high resistivity.
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