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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
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Title A Safety Improvement of Low Voltage Circuit-breakers through Analysis of Instantaneous Trip Characteristics of 30AF Circuit-Breakers
Authors Ju-Chul Kim ; Jeong-Kyun Lim ; Sang-joong Lee
DOI http://dx.doi.org/10.5207/JIEIE.2010.24.12.078
Page pp.78-83
ISSN 1225-1135
Keywords 30AF Circuit-Breakers ; Low Voltage Circuit-Breakers ; Instantaneous Trip Characteristics ; Rated Short-Circuit Breaking Capacities
Abstract The domestic 30AFs that are currently being produced show many problems due to different instantaneous trip characteristics in case of short-circuit. The troubles may cause explosion by excessive short-circuit capacities and arc emission, which results in a wide range of blackout. The function and safety of the low voltage circuit breakers installed before the end load are very important. This paper presents an idea on the safety improvement of the low voltage circuit-breakers through the analysis of instantaneous trip characteristics of domestic 30AF circuit-breakers.