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3상 히터의 불평형전류 검출에 의한 결함예측 및 보호장치의 선정
Fault Prediction Based on Unbalanced Current Detection of Three Phase Heater and Selection of the Protective Device
이문형 ( Mun Hyung Lee ) , 정재희 ( Jae Hee Jung )
UCI I410-ECN-0102-2015-500-002110647
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Three phase heaters in 7 buildings of 2 sites were examined for precise diagnosis. The sample size was 626. Precise examinations of current and the heater wiring status revealed contact failures and arcs in equipments that had CUF larger than 10%. Contact failures and arcs may cause electrical fire. Therefore, the correlation between the CUF and the imperfections in heater equipment and its wiring was analyzed for three phase heaters. In addition, the protection devices used for detection of heater imperfections were found to be unsuitable for the purpose. Current status of the protection devices was analyzed, and suggestions for improvements were made for new standards of the protection device selection

1. 서 론
2. 히터/히터봉/가열장치에서의 화재현황
3. 3상히터의 결함에 따른 부하전류의 변화
4. 3상히터의 전류불평형률의 실측 결과
5. 3상히터의 보호장치 설치 실태
6. 결 론
References
[자료제공 : 네이버학술정보]
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