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Abstract
본 논문에서는 IEC 60364에서 제시하고 있는 접지계통(TT접지계통, TN-S 접지계통 및 TN-C)의 누전차단기 동작특성 및 보호도체의 임피던스변화에 따른 Loop Impedance 특성분석을 실시하였다.<BR> 분석결과 Loop Impedance의 경우 저항성분과 인턱턴스성분에 영향을 받는 것으로 나타났다. 접지계통별 전류?전압특성은 TN-S 접지계통 및 TN-C 접지계통의 경우 사고전류가 높고 접촉전압이 낮은 특성을 나타낸 반면 TT 접지계통의 경우 사고전류는 낮고 접촉전압이 높게 나타남을 확인하였다.
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