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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
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  3. JIEIE 2021-12(Vol.35 No.12)
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Title Study on Depth of A-Class Earth Electrode Considering the External Environment Change
Authors Songhee Cha ; Kihwan Ryu ; Yong-Seong Kim ; Geum-Hwan Lee ; KuHyun Cho ; Seong-su Shin
DOI http://doi.org/10.5207/JIEIE.2021.35.12.012
Page pp.12-18
ISSN 1225-1135
Keywords Depth of earth electrode; Earth electrode; Korea electro-technical code
Abstract The purpose of this paper is to study on depth of A-Class earth electrode for maintaining the earthing resistance of electrical installation. IEC, BS, NEC, NESC were investigated and compared with KEC regulation, for soil temperature (freezing or frostline), earth potential, and moisture effect (drying). Furthermore, we demonstrate the effect of water and temperature on the depth of the earth electrode was tested. In addition, the effect on moisture and temperature according to the depth of the earth electrode was tested. Based on the result of this study, it is intended to derive the depth of the earth electrode that is safe and reliable in electrical installations.