Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Analysis of Oxidization Characteristics according to the shapes of RCD contacts

RCD 접점형태에 따른 산화특성 분석

  • Kim, Dong-Woo (Electrical Safety Research Institute, subsidiary of Korea Electrical Safety Corporation) ;
  • Kim, Hyang-Kon (Electrical Safety Research Institute, subsidiary of Korea Electrical Safety Corporation) ;
  • Gil, Hyoung-Jun (Electrical Safety Research Institute, subsidiary of Korea Electrical Safety Corporation) ;
  • Han, Woon-Kim (Electrical Safety Research Institute, subsidiary of Korea Electrical Safety Corporation) ;
  • Choi, Chung-Seog (Electrical Safety Research Institute, subsidiary of Korea Electrical Safety Corporation)
  • 김동우 (한국전기안전공사부설 전기안전연구원) ;
  • 김향곤 (한국전기안전공사부설 전기안전연구원) ;
  • 길형준 (한국전기안전공사부설 전기안전연구원) ;
  • 한운기 (한국전기안전공사부설 전기안전연구원) ;
  • 최충석 (한국전기안전공사부설 전기안전연구원)
  • Published : 2005.07.07
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Abstract

In this paper, the oxidization characteristics were analyzed according to the shapes of Residual Current Protective Device(RCD) contacts. RCD is an electrical safety device specially designed to immediately switch the electricity off when electric leakage is detected at a level harmful to a person using electrical equipment. The shapes of RCD contacts are a little bit different according to the models. When RCD is turned on, stationary and moving contact do not fit together. So, it can cause the increase of contact resistance. To discover the deterioration characteristics of RCD contacts by switching repetition, the contacts were analyzed by stereo microscope, Scanning Electron Microscope(SEM) and Energy Dispersive X-ray Spectrometer(EDS).

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