Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of electric safety control system for incapable operation of ELB and MCB using the low voltage distribution line

저압 배전선로의 누전 및 배선용 차단기의 오동작 방지를 위한 전기안전 제어장치 개발

  • Kwak, Dong-Kurl (The Professional Graduate School of Disaster Prevention Technology, Kangwon University) ;
  • Shin, Mi-Young (The Professional Graduate School of Disaster Prevention Technology, Kangwon University) ;
  • Jung, Do-Young (The Professional Graduate School of Disaster Prevention Technology, Kangwon University) ;
  • Kim, Hyo-Jin (Korea Electrical Contractors Association) ;
  • Baek, Seong-Hyun (Korea Electrical Contractors Association) ;
  • Choi, Byung-Seub (Korea Electrical Contractors Association)
  • 곽동걸 (강원대학교 방재기술전문대학원) ;
  • 신미영 (강원대학교 방재기술전문대학원) ;
  • 정도영 (강원대학교 방재기술전문대학원) ;
  • 김효진 (한국전기공사협회) ;
  • 백성현 (한국전기공사협회) ;
  • 최병섭 (한국전기공사협회)
  • Published : 2007.07.18
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Abstract

The major causes of electrical fire are classified to short circuit fault, overload fault, electric leakage and electric contact failure. The occurrence factor of the fire is electric arc or spark accompanied with electrical faults. Residual Current Protective Device (RCD), that is Earth Leakage Circuit Breaker(ELB) and Molded_case Circuit Breaker (MCB), of high sensitivity type used at low voltage wiring cuts off earth leakage and overload, but the RCD can't cut off electric arc or spark to be a major factor of electrical fire. As the RCDs which are applied low voltage distribution panel are prescribed to rated breaking time about 30[ms] (KS C 4613), the RCDs can't perceive to the periodic electric arc or spark of more short wavelength level. To be improved on such problem, this research development is proposed to a auxiliary control apparatus for RCD trip on electric arc or spark due to electrical fire. Some experimental results of the proposed apparatus is confirmed to the validity of the analytical results.

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