• 제목/요약/키워드: Overheating at electrical connections

검색결과 3건 처리시간 0.019초

아산화동증식 발열에 의한 화재 사례의 분석 (Analysis of a Fire Case Caused by Heat Generation due to Cu2O Breeding)

  • 박진영;이의평
    • 한국화재소방학회논문지
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    • 제34권2호
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    • pp.54-63
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    • 2020
  • 전선 접속부 등에서 아산화동(Cu2O)증식 발열에 의해 화재가 발생하는 것은 화재조사 전문가들에게 널리 알려져 있지만 아산화동증식 발열에 의한 화재사례를 구체적으로 분석하여 소개하는 논문은 거의 없다. 이 논문에서는 전기적인 접속부분의 발열에 의한 화재 통계와 아산화동증식 발열 현상과 특징을 분석한 후 아산화동증식 발열에 의해 대학실험실의 전선 접속부분에서 화재가 발생한 사례에 대해 구체적으로 분석하고 있다. 이 화재사례는 발화개소의 화재패턴 조사, 전선 접속부분에 대한 육안 조사, 3차원 CT 촬영 조사, 전원인가 시험, 실체현미경 조사, SEM과 EDS 분석을 통해서 전선 접속부분에서 아산화동 증식 발열로 인해 화재가 발생한 것으로 결론을 내릴 수 있었다.

저압용 전열수구에서 방전 신호의 발생과 검출에 관한 연구 (Studies on Generation and Detection of Discharge Signals in a Low-voltage Outlet)

  • 길경석;송재용;서황동;문승보;조영진;황돈하
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제54권11호
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    • pp.498-502
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    • 2005
  • The objectives of this paper are to provide information on the characteristics of the discharge signals in a low-voltage indoor outlet. Most of electrical fires are caused by short circuits, overheating of wires, deterioration and incomplete connection of wiring devices. The last two cases are predictable before the occurrence of fire because of its slow progress. We have simulated the discharge signals caused by the deterioration and incomplete connection of wiring devices using aged outlets. From the experimental data, we could characterize the frequency spectrums of the discharge signals depending on the cases. The higher frequency components of the signal are attenuated by the capacitance and inductance of power lines as the measuring point is getting away from the discharges. Main frequency components of the discharge signal are existent at 600kHz - 1.5MHz in incomplete connections and at 210H7z - 8MHz in deteriorations of the outlet.

열화된 저압용 콘센트에서 방전신호의 발생과 검출 (Generation and Detection of Discharge Signals in Deteriorated)

  • 송재용;서황동;문승보;길경석;조영진
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2005년도 추계종합학술대회
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    • pp.200-203
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    • 2005
  • Most of electrical fires are caused by short circuits, overheating of wires, deterioration and incomplete connection of wiring devices. The last two cases are predictable before the occurrence of fire because of its slow progress. In this paper, we have simulated the discharge signals caused by the deterioration and incomplete connection of wiring devices using an aged concent to provide information on the characteristics of discharge signals. From the experimental data, we could characterize the frequency spectrums of the discharge signals depending on the cases. The higher frequency components of the signal are attenuated by the capacitance and inductance of power lines as the measuring point is getting away from the discharges. Main frequency components of the discharge signal are existent at 600 kHz - 1.5 MHz in incomplete connections and at 210 kHz - 8 Mhz in deteriorations of the concent.

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