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 Metallurgical Structure and Arc Properties of Copper Wire Due to Over-current

과전류에 의한 동 전선의 용단 아크 특성 및 금속조직 분석

  • Kim, Young-Seok (Electrical Safety Research Institute attached to Korea Electrical Safety Corporation) ;
  • Shong, Kil-Mok (Electrical Safety Research Institute attached to Korea Electrical Safety Corporation) ;
  • Kim, Dong-Ook (Electrical Safety Research Institute attached to Korea Electrical Safety Corporation) ;
  • Lee, Ki-Yeon (Electrical Safety Research Institute attached to Korea Electrical Safety Corporation) ;
  • Choi, Chung-Seog (Electrical Safety Research Institute attached to Korea Electrical Safety Corporation)
  • 김영석 (한국전기안전공사 부설 전기안전연구원) ;
  • 송길목 (한국전기안전공사 부설 전기안전연구원) ;
  • 김동욱 (한국전기안전공사 부설 전기안전연구원) ;
  • 이기연 (한국전기안전공사 부설 전기안전연구원) ;
  • 최충석 (한국전기안전공사 부설 전기안전연구원)
  • Published : 2005.07.07
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Abstract

In this paper, we analyzed a metallurgical structure and arc properties of copper wire when the over-current flows on electric wire. From the results, The fusing current was related to the fusing time(current rising rate per second). In case of the shorter the fusing time, the fusing current was high, and the fusing time of ac type was larger than that of dc type. The copper wire was bent by the increase of current and heated, the beads were scattered around wire with a flash. We could observed the dendrite structure in 'molten wire at ac and dc current type. According as the current rising rate per second is short, the dendrite structure is distributed in surface of wire.

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