Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference (한국조명전기설비학회:학술대회논문집)
- 2005.05a
- /
- Pages.69-73
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- 2005
The analysis of arc dispersion and contacts characteristics according to switching of RCD for low voltage
저압용 누전차단기의 스위칭에 따른 아크 비산 및 접점의 특성분석
- Kim, Dong-Woo (Electrical Safety Research Institute, Korea Electrical Safety Corporation) ;
- Kim, Hyang-Kon (Electrical Safety Research Institute, Korea Electrical Safety Corporation) ;
-
Gil, Hyung-Jun
(Electrical Safety Research Institute, Korea Electrical Safety Corporation)
;
-
Han, Woon-Ki
(Electrical Safety Research Institute, Korea Electrical Safety Corporation)
;
- Choi, Chung-Seog (Electrical Safety Research Institute, Korea Electrical Safety Corporation)
- 김동우 (한국전기안전공사 부설 전기안전연구원) ;
- 김향곤 (한국전기안전공사 부설 전기안전연구원) ;
-
길형준
(한국전기안전공사 부설 전기안전연구원)
;
-
한운기
(한국전기안전공사 부설 전기안전연구원)
;
- 최충석 (한국전기안전공사 부설 전기안전연구원)
- Published : 2005.05.13
Abstract
The arc dispersion and contacts characteristics were analyzed according to switching off Residual Current Protective Device(RCD) switch. Arc dispersion process was taken by high speed imaging system at a rate of 10,000 frames per second. When RCD was switched from on to off, art was observed and it took about 2.3[ms] from the generation of arc to the extinction of arc. When RCD was switched from off to on, arc was not observed. We repeated switching on and off 1000, 3000 and 6000 times. After repetition, the surface characteristics of contacts were taken by stereo microscope and Scanning Electron Microscope(SEM). From the scattering patterns analysis of arc and the analysis of deteriorated contacts, it could be applicable to the research of electric fire and arc suppression.
Keywords