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A Study on the Short-Circuit Characteristics of Vinyl Cords Damaged by External Flame  

Choi Chung-Seog (전기안전연구원)
Kim Hyang-Kon (전기안전연구원)
Shong Kil-Mok (전기안전연구원)
Publication Information
Fire Science and Engineering / v.18, no.4, 2004 , pp. 72-77 More about this Journal
Abstract
In this paper, we studied on the short-circuit process, surface structure, and component variation of vinyl cords. In the results of high speed imaging system (HSIS) analysis, as soon as wire covering was damaged by heat, the conductor of wire came in contact with the other conduct of wire, and the short-circuit occurred. Stereomicroscope and SEM analysis indicated that the source part of wire showed V-type form. The molten beads of load part were bigger than those of source part. In the results of EDX analysis, Cu and O were detected in the source part, whereas covering material (Cl, Ca), Cu and O were detected in the load part. The results will help us to find out the cause of electrical fire.
Keywords
Short-circuit; Vinyl cord; SEM; EDX; HSIS; External flame;
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