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The Analysis of the Carbonization Properties between RCD Source Terminals Deteriorated by Tracking  

최충석 (한국전기안전공사 부설 전기안전연구원)
송길목 (한국전기안전공사 부설 전기안전연구원)
김동우 (한국전기안전공사 부설 전기안전연구원)
Publication Information
Fire Science and Engineering / v.17, no.4, 2003 , pp. 13-19 More about this Journal
Abstract
In this paper, we studied on the characteristics of RCD(Residual Current Device) case deteriorated by tracking, and compared the tracked samples between in the site of fire($S_1$) and in the reappearance experiment($E_1$). This experiment is applied to IEC Publ. 112 method. Electrical fire by tracking occurred after scintillation and dry-band generated. The insulation resistance between source terminals of RCD case was about 25.7Ω in $E_1$ and the resistance was about 58.6Ω in $S_1$.The exothermic peaks of $E_1$ appeared at $491.0^{\circ}C$ and $603.2^{\circ}C$. The exothermic peak at $603.2^{\circ}C$ was shown by tracking. And the exothermic peak of $S_1$ appeared at $593.1^{\circ}C$. In spectrum of $S_1$ and $E_1$, absorption peak didn't appear at near 1590 cm$^{-1}$ .
Keywords
Electrical fire; RCD case; Scintillation; Source terminals; Tracking;
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