Browse > Article

The Arc Dispersion Properties by Switching of High Sensitivity Type RCD Contacts  

Choi Chung-Seog (Electrical Safety Research Institute, subsidiary of KESCO)
Kim Dong-Woo (Electrical Safety Research Institute, subsidiary of KESCO)
Kim Young-Seok (Electrical Safety Research Institute, subsidiary of KESCO)
Lee Ki-Yeon (Electrical Safety Research Institute, subsidiary of KESCO)
Publication Information
Fire Science and Engineering / v.19, no.2, 2005 , pp. 63-68 More about this Journal
Abstract
In this study, the arc dispersion properties were analyzed according to switching of high sensitive type Residual Current Protective Device(RCD) contacts. Arc dispersion and ignition process was taken by high speed imaging system(HSIS). In this experiment, electric lamps(60 W) and heaters(950 W) were connected in parallel as loads. In case of normal RCD, it took about 2.3(ms) from the generation of arc to the extinction of uc. When arc was dispersed in normal RCD, it did not ignite cotton. Whereas, in case of RCD deteriorated by NaCl solution, the range of arc dispersion was wider and the arc lasted for 3.3[ms] more compared to normal RCD. And the arc ignited cotton. In order to prevent accidents caused by RCD, we should be careful of environmental factors, such as dust and humidity, and the parts of RCD should be used as incombustible materials.
Keywords
Citations & Related Records
연도 인용수 순위
  • Reference
1 한국전기안전공사, '전기재해 통계분석', pp.7-12 (2003)
2 J. H. Dymond, Nick Stranges and Karim Younsi and John E. Hayward, 'Stator Winding Failures: Contamination, Surface Discharge, Tracking', IEEE Tran. Industry Applications, Vol. 38, No.2, pp. 577-583, March/April(2002)   DOI   ScienceOn
3 Roland S. Timsit, 'A Possible Degeneration Mechanism in Stationary Electrical Contacts', IEEE Trans. on Components, Hybrids, and Manufacturing Technology, Vol. 13, No.1, March, pp.65-68(1990)   DOI   ScienceOn
4 Guo-Ping Lue, Jian-Gue Lu, and Ji-Gao Zhang, 'Failure Analysis on Bolt-type Power Connector's Application', IEEE, pp.77-86(1999)
5 Ming Sun, et al., 'Lifetime Resistance Model of Bare Metal Electrical Contacts', IEEE Trans. on Advanced Packaging, Vol. 22, No.1, Feb., pp.60-67(1999)   DOI   ScienceOn
6 C. S. Choi et al., 'The Analysis of Dendrite Structure of Electric Wire Melted by Fusing Current', 2003 J-K Symp. on ED and HVE, pp.145-148 (2003)
7 최충석 외 5, '전기화재공학', 동화기술, pp.189-198 (2004)
8 최충석 외 4, '저압용 누전차단기 접속부의 발열 및 금속조직 분석에 관한 연구', 한국화재소방학회지, Vol. 18, No.4, pp.57-63(2004)
9 Nouredine ben Jemaa, et al., 'Erosion and Contact Resistance Performance of Materials for Sliding Contacts under Arcing', IEEE Trans., Comp., Packag., Manufact. Technol. Vol. 24, No. 3(2001)
10 H. Nakano, 'Consideration of Fire Cause from Electrical Wiring', Japan Association for Fire Sci. & Eng., Vol. 46, No.2, pp.1-5(1996)