Proceedings of the Korea Institute of Fire Science and Engineering Conference (한국화재소방학회:학술대회논문집)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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A Study on Electrical Accident of Distributing Cable Termination with Simulated Badness Construction

평가시공불량을 모의한 배전급 케이블 종단부의 전기적 사고 연구

  • Choi, Jae-Hyeong (Department of Electrical Engineering, Gyeongsang National University and Engineering Research Institute) ;
  • Choi, Jin-Wook (Department of Electrical Engineering, Gyeongsang National University and Engineering Research Institute) ;
  • Kim, Sang-Hyun (Department of Electrical Engineering, Gyeongsang National University and Engineering Research Institute) ;
  • Kim, Young-Seok (Electrical safety Research Institute, subsidiary of Korea Electrical Safety Corporation) ;
  • Kim, Sun-Gu (Electrical safety Research Institute, subsidiary of Korea Electrical Safety Corporation) ;
  • Baek, Seung-Myeong (Department of Fire Protection Engineering, Changwon College)
  • 최재형 (경상대학교 전기공학과) ;
  • 최진욱 (경상대학교 전기공학과) ;
  • 김상현 (경상대학교 전기공학과) ;
  • 김영석 (한국전기안전공사 전기연구원) ;
  • 김선구 (한국전기안전공사 전기연구원) ;
  • 백승명 (창원전문대학 소방방재과)
  • Published : 2008.11.13
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Abstract

This paper introduces experimental investigates of an electrical accident of the distributing cable termination with simulated badness construction. We prepared two termination kites, one is built-up type, the other is heat contraction type. Also, we manufactured cable termination that have simulated defect by badness construction and measured their insulation characteristics such as ac (35kV, 1min) and impulse (95kV, $1.2{\times}50{\mu}s$) withstand test. The influence of defects such as thickness and the gap between stress-con of housing and semi-conductor on insulating properties of the termination have been studied. The thickness decrease of insulator decreases ac breakdown strength. Dielectric breakdown traces of insulator that is damaged by knife displayed other shape. The gap of between housing and semiconductor deteriorates dielectric strength of insulator seriously.

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