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http://dx.doi.org/10.5207/JIEIE.2012.26.12.044

Improvement of Circuit-Time Product through Analysis of Operating Time of Earth Leakage Circuit-Breakers  

Kim, Ju-Chul (Sangdo E&GC Co., Ltd., Corporate R&D Institutes, Chief Technology Officer)
Lee, Sang-Joong (Seoul National University of Science and Technology, Department of Electrical Engineering)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.26, no.12, 2012 , pp. 44-49 More about this Journal
Abstract
The earth leakage circuit-breakers installed to protect the human body against electrical shock have conventionally had a sensitivity current of 30 mA and an operating time of 30 ms or less. No reviews are found, however, on the operating time of the current conducting through the human body due to the electrical shock or ground fault. This paper measures the trip-operating time against the earth leakage under the condition of increased current as well as under the condition of rated sensitivity current of the earth leakage circuit-breakers. Further measurement with a prototype model showed an improved operating time of 16 ms or less under the condition of rated sensitivity current. It is expected that development of circuit-breakers with higher safety is possible if the performance of the electronic circuit can be improved.
Keywords
Rated Sensitivity Current; Trip Operating Time; Electrical Shock; Ventricular Fibrillation;
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  • Reference
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