Proceedings of the KSR Conference (한국철도학회:학술대회논문집)

The Korean Society for Railway (한국철도학회)
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Comparative Measurement of Touch and Step Voltages in Ground Systems

접지시스템에서 접촉전압과 보폭전압의 비교측정

  • 김황국 (한국해양대학교 전기전자공학부 대학원) ;
  • 문병두 (한국해양대학교 전기전자공학부 대학원) ;
  • 박대원 (한국해양대학교 전기전자공학부 대학원) ;
  • 길경석 (한국해양대학교 전기전자공학부) ;
  • 한주섭 (한국철도시설공단 KR 기술연구소)
  • Published : 2008.06.12
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Abstract

Ground systems set the reference voltage level of circuit and system, and suppress Ground Potential Rise (GPR) by flowing fault currents to ground safely. There are several parameters which evaluate the performance of ground systems as ground resistance, touch voltage and step voltage. The touch and step voltages are especially important to ensure safety of human body. In this paper, we measured the touch and step voltages by injection of power frequency and surge current. Also correlation between touch and step voltages is compared and analyzed for the same ground systems.

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