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Copper Oxide Growing Characteristics of PVC Insulated Wire and Application to the Fire Investigation  

Kim, Hyang-Kon (전기안전연구원 재해예방연구그룹)
Choi, Chung-Seog (전기안전연구원 재해예방연구그룹)
Kim, Dong-Ook (전기안전연구원 재해예방연구그룹)
Choi, Hyo-Sang (조선대학교 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.56, no.1, 2007 , pp. 37-44 More about this Journal
Abstract
This paper describes characteristics for copper oxide growth of polyvinyl chloride(PVC) insulated wires by series arc. In this experiment, 600V IV wires were used, and characteristics of oxide growth and ignition process were analyzed in case load was 300W, 460W and 600W, respectively. In the result of experiment, covering materials were molten, carbonized and ignited, whereas, oxidized materials were grown in conducting material. During copper oxide was growing, contact voltages and power dissipations increased. When there is copper oxide growth, the waveform of current showed sinusoidal waveform, and the waveform of voltage showed modified waveform. Oxidized materials were heated at about $905^{\circ}C$, surface structure showed irregular shapes, and cross-section showed multiple cracks. And, the results of this experiment were applied to the fire cause analysis of fire evidence collected at the fire scene.
Keywords
PVC Insulated Wire; Copper Oxide; Glowing; Fire Investigation; Contact Voltage;
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