The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Protection Techniques Against Electric Shock in Low Voltage DC Grounding Systems Depending on the Analysis of Earth Fault Current Paths

저압직류 접지시스템의 지락경로 흐름 분석에 따른 감전 보호기법

  • Kim, Dong-Woo (Electrical Safety Research Institute, a subsidiary of KESCO) ;
  • Lim, Young-Bea (Electrical Safety Research Institute, a subsidiary of KESCO) ;
  • Lee, Sang-Ick (Electrical Safety Research Institute, a subsidiary of KESCO) ;
  • Choi, Myeong-Il (Electrical Safety Research Institute, a subsidiary of KESCO) ;
  • Moon, Hyun-Wook (Electrical Safety Research Institute, a subsidiary of KESCO)
  • Received : 2015.12.22
  • Accepted : 2015.12.29
  • Published : 2016.01.01
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Abstract

This paper presents protection techniques against electric shock in low voltage DC(direct current) grounding systems depending on the analysis of earth fault current paths. Firstly, the comparison between alternating current and direct current on human was conducted, and current threshold values for each current path and for long duration were analyzed. Secondly, the analyses of the earth fault current flows were performed depending on the grounding types and earth fault conditions. Lastly, based on these analyses, adequate protection measures of electric shock depending on low voltage DC grounding types were provided.

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References

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