Journal of the Korean Society of Safety (한국안전학회지)
- Volume 15 Issue 1
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- Pages.93-99
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- 2000
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- 1738-3803(pISSN)
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- 2383-9953(eISSN)
Electric Fire Hazard in Low Voltage Distribution Circuits Protected by Electric Leakage Circuit Breaker(ELB)
누전차단기로 보호되는 저압선로에서의 발화위험성
Abstract
This paper presents a study on the assessment of electrical fire hazards by electric circuits with leakage. The hazards are evaluated with the energy supplied by earth-leakage currents which flow in the circuits simulating the actual circuit of domestic premises. Also, operating time and current of ELB are measured by an experimental approach. A common specification of ELB used in this paper has a sensitivity of 30[mA] for leakage current working on the current-balance principle. Total charges and energy of leakage currents are calculated quantitatively by a theoretical approach and compared with the results obtained from experiments.
Keywords