Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Characteristics on Arc Waveform and RMS of Current by Conductive Powder

도전성 분말에 의한 아크전류의 파형 및 실효값 특성

  • Kim, Doo Hyun (Department of Safety Engineering, Chungbuk National University) ;
  • Kang, Yang Hyun (Department of Safety Engineering, Chungbuk National University)
  • Received : 2013.03.14
  • Accepted : 2013.05.07
  • Published : 2013.06.30
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Abstract

This paper is aimed to make an analysis on characteristics of the parallel arc waveform and RMS of current at the electrical tracking state by conductive powder. In order to achieve the goal in this paper, field state investigation at metal processing companies in Chung-Nam province area was conducted. With the field state investigation, conductive powder were collected from metal processing companies. By experiment on electrical connector(breaker, connector) over which the conductive powder were scattered, arc waveform and RMS of current were measured. The measured waveform and RMS(root-mean-square) of current were analyzed to describe characteristics and patterns of electrical arc by the conductive powder. It was proved that conductive powder on electrical connector can flow electrical current enough to make electrical fire with high thermal energy. Also the change of sine waveform and RMS of current can be used to find out relationship between electrical fire and fault signal by conductive powder. The results obtained in this paper will be very helpful for the prevention of electrical fires occurred at the metal processing companies.

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