Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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A Study on the Thermal Characteristics of Wire Connection Part Depending on the Screw Torque

나사조임토크에 따른 전선접속부의 열적특성에 관한 연구

  • Kim, Si-Kuk (Dept. of Fire and Disaster Protection Engineering, Hoseo University) ;
  • Jee, Seung-Wook (Dept. of Fire and Disaster Protection Engineering, Hoseo University) ;
  • Park, Sang-Min (Dept. of Fire and Disaster Protection Engineering, Hoseo University) ;
  • Lee, Chun-Ha (Dept. of Fire and Disaster Protection Engineering, Hoseo University)
  • 김시국 (호서대학교 소방방재학과) ;
  • 지승욱 (호서대학교 소방방재학과) ;
  • 박상민 (호서대학교 소방방재학과) ;
  • 이춘하 (호서대학교 소방방재학과)
  • Received : 2012.07.12
  • Accepted : 2012.08.13
  • Published : 2012.08.31
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Abstract

To analyze the thermal characteristics of wire connection part that is connected to a screw-clamping terminal block depending on screw torque, the normal screw torque defined in KS C 2625 and the abnormal screw torque that can occur due to loosened screws resulting from defective work or aged deterioration were used as experimental variables. After the same load was applied to normal and abnormal screw torques, the thermal characteristics of the wire connector were measured and compared with a thermal imaging camera. The findings from this study will be used to detect heating due to defective screw torque at terminal block connections during electric safety inspection in the future and minimize the hazard of electric fire.

본 논문은 나사조임 단자대에 접속되는 전선접속부의 나사조임토크에 따른 열적특성을 분석하고자, 나사조임토크를 KS C 2625에서 규정한 정상조임토크와 시공불량 및 경년변화 등의 원인으로 인해 나사조임의 풀림으로 발생될 수 있는 이상조임토크를 실험의 변수로 하였다. 이때, 정상조임토크와 이상조임토크에 동일한 부하를 인가한 후, 열화상카메라를 이용하여 전선접속부의 열적특성을 측정한 후 비교 분석하였다. 도출된 결과를 바탕으로 향후 전기안전점검 시 단자대 접속개소의 조임토크 불량으로 인한 발열을 사전에 감지하고, 전기화재의 위험성이 나타날 가능성을 최소화 할 수 있는 대책자료로 활용하고자 한다.

Keywords

References

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Cited by

  1. A Study on the Electrical Fire Risk of Terminal Block Due to Single and Composite Cause vol.29, pp.5, 2015, https://doi.org/10.7731/KIFSE.2015.29.5.057