Browse > Article

A Study on the Fire Properties of MOF Insulation Cover and Field Condition of 22.9kV Class Power Receiving System  

Choi Chung-Seog (Electrical Safety Research Institute, subsidiary of KESCO)
Kim Dong-Woo (Electrical Safety Research Institute, subsidiary of KESCO)
Han Woon-Ki (Electrical Safety Research Institute, subsidiary of KESCO)
Lee Ki-Yeon (Electrical Safety Research Institute, subsidiary of KESCO)
Publication Information
Journal of the Korean Society of Safety / v.20, no.2, 2005 , pp. 56-60 More about this Journal
Abstract
We studied fire properties of MOF(Metering Out Fit) insulation cover and field condition of 22.9kV power receiving system. $49.5\%$ of formal equipments were installed indoors, whereas $40.8\%$ of informal equipments were installed as H-type. Insulation treatment was not done at a $22.4\%$ ratio of main line($27.7\%$ of transformer, $70.2\%$ of COS, $10.4\%$ of MOF). Fire pattern analysis showed that the fire started at the secondary part of OC wire. In the result of DTA(Differential Thermal Analysis), normal cover showed exothermic reactions at $310^{\circ}C,\;399^{\circ}C\;and\;510^{\circ}C$ (endothermic reactions at $382^{\circ}C$). Whereas damaged cover showed exothermic reactions at $412^{\circ}C$(endothermic reactions at $389^{\circ}C$). In the result of TGA(Thermo Gravimetric Analysis), the thermal weight change of normal cover was similar compared to damaged cover. In the result of FT-IR analysis, normal cover showed absorption peaks at $3,024cm^{-l},\;2,921cm^{-l},\;1,600cm^{-1},\;1,492cm^{-1},\;1,451cm^{-1},\;1,154cm^{-l},\;1,027cm^{-1},\;906cm^{-1}$. Whereas, in case of tracked cover, the absorption peaks that were shown in normal cover disappeared and different absorption peak was shown at $966cm^{-1}$.
Keywords
fire properties; MOF; power receiving system; SEM; FT-IR; DTA/TGA;
Citations & Related Records
연도 인용수 순위
  • Reference
1 최충석 외 5, '전기화재공학', 동화기술, pp. 189 -198, 2004
2 Nahman, J. M., 'Assessment of the risk of fatal electrical shocks inside a substation and in nearby exposed areas', IEEE Trans., Industry Applications, pp. 911-922, 1998
3 A. M. G. Minto, 'Some aspects of precautions against electric shock and earth faults in electrical instillations', Third International Conference on IEMSS, pp. 36-41, 1988
4 송길목 외 3, '트래킹에 의해 열화된 페놀수지의 탄화 특성', 대한전기학회, Vol. 53C, No. 1, pp. 1-7, 2003
5 최충석 외 2, '저압설비에 사용되는 누전차단기의 트래킹 특성에 관한 연구', 한국산업안전학회지, pp. 74-79, 2001
6 IEC Pub 1. 112, 'Method for determining the comparative and the proof tracking indices of solid materials under moist conditions', 3rd edition, 1979
7 Andrews, J. J., Marshall, J. A., 'A detailed investigation of an electrical shock and burn injury', IEEE., Industrial and commercial power systems Technical Conference, pp. 143-154, 1998   DOI
8 ASTM D 2303-90, Standard Test Method for Liquid-Contaminant, Inclined-Plane Tracking and Erosion of Insulating Materials, ASTM
9 Wang Ruzhang, Huang Weishu, yin Goxiang, 'A testing research on composite air clearance for live line working on 500kV DC transmission lines', ESOM, pp. 183-189, 1995
10 Chung-Seog Choi, et al, 'A study on the characteristics of tracking deterioration between electrodes on phenolic resin used for low voltage', KIEE, The international Conference on Electrical Engineering Proc., pp. 1135-1138, 2002
11 한국전기안전공사, '전기재해 통계분석', pp. 7-84, 2003