옥내배선 길이에 따른 단락 특성의 실험적 연구An Experimental Study on Short Circuit Characteristics by the Interior Wiring Length
- Other Titles
- An Experimental Study on Short Circuit Characteristics by the Interior Wiring Length
- Authors
- 송재용; 김진표; 조영진; 최돈묵; 오부열; 길경석
- Issue Date
- 2012
- Publisher
- 한국안전학회
- Keywords
- short circuit; parallel arc; arc current; arc energy; interior wiring; electrical fire
- Citation
- 한국안전학회지, v.27, no.4, pp.38 - 42
- Journal Title
- 한국안전학회지
- Volume
- 27
- Number
- 4
- Start Page
- 38
- End Page
- 42
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/16719
- ISSN
- 1738-3803
- Abstract
- This paper describes electrical fire on residential environment such as apartment and detached house caused by defect of interior wiring. We carried out experimental study on short circuit characteristics by the interior wiring length. We were measured arc current, arc energy and interrupting time of earth leakage current circuit breaker(ELB), when an interior wiring break out short circuit in residential environment.
From the experiment results, the longer of the interior wiring, the magnitude of arc current decreased and the interrupting time of ELB increased. When applied the A maker's ELB, the strength of arc current and interrupting time of ELB was 254 A and 245 ms respectively at 30 m interior wiring length. In 3 m interior wiring length, arc current and interrupting time was 716 A and 4.24 ms respectively. Arc energy was dependent on the magnitude of arc current and the interrupting time of ELB, the longer the interrupting time, arc energy increasing. In this paper, minimum arc energy was 277 J using C maker's ELB and 3 m interior wiring length(arc current 283 A, interrupting time of breaker 6.28 ms). Therefore in the residential environment, short circuit caused by defect of the interior wiring lead to electrical fire
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