전기장판 열선 결함에 의한 전기화재 원인분석Fire Cause Analysis on Electric Pad Due to Defect of Hot Wires
- Other Titles
- Fire Cause Analysis on Electric Pad Due to Defect of Hot Wires
- Authors
- 송재용; 사승훈; 남정우; 김진표; 조영진; 오부열
- Issue Date
- 2012
- Publisher
- 한국안전학회
- Keywords
- electric pad; carbon type hot wire; magnetic shielded type hot wire; poor connection; breakdown
- Citation
- 한국안전학회지, v.27, no.2, pp.7 - 12
- Journal Title
- 한국안전학회지
- Volume
- 27
- Number
- 2
- Start Page
- 7
- End Page
- 12
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/16803
- ISSN
- 1738-3803
- Abstract
- This paper describes electrical fire on electric pad caused by defect of hot wires. We analyzed two type electric pad using by carbon type hot wire and magnetic shielded type hot wire. First, a carbon type hot wires electric pad is virtually impossible to connect hot wire as a method of electrical welding or soldering. In order to connect between hot wires, that has to splice carbon type material connector. If junction of hot wires was occurrence of poor connection on electric pad, it increase contact resistance on this junction point. With increasing contact resistance, junction of hot wires on electric pad generates local heating and finally leads to electrical fire.
An electric pad using by a magnetic shielded type hot wire happened local heating on signal wire for sensing temperature-rise caused by applying current for magnetic shielded. With increasing local heating of signal wire,insulated coating of hot wire was melted. Finally the magnetic shielded type hot wire electric pad lead to electrical fire with breakdown between signal wire and hot wire. In this paper, we analyzed shape of damage in hot wire caused by electrical local heating and investigated fire cause on electric pad due to defect of hot wires
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