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외부환경 변화를 고려한 A형 접지극의 매설깊이 기준 연구
차송희(Songhee Cha),류기환(Kihwan Ryu),김용성(Yong-Seong Kim),이금환(Geum-Hwan Lee),조구현(KuHyun Cho),신성수(Seong-su Shin) 한국조명·전기설비학회 2021 조명·전기설비학회논문지 Vol.35 No.12
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.