http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
피뢰시스템 구성부품 중 금속접속재의 성능시험 및 결과분석
이주철(Ju-Cheol Lee),이안기(An-Ki Lee),김재철(Jae-Chul Kim) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.7
Recently, IEC published new standards about the requirements and tests for lightning protection system(LPS) components. If components are used for LPS, they should comply with the IEC standards. This paper, we collected six specimens for the metallic connection components using in domestic, and it tested for withstand lightning current which according to the IEC 62561-1. As a result, only one specimen meet this performance requirement. The specimen is the metallic connection component with four bolts fixed. Therefor, when designing of LPS in domestic, the metallic connection components shall be taken into account for the selection of the withstand lightning current. In addition, we need to develop for LPS components product and the national standards.
콘크리트에 매입된 기초접지극의 크기 및 설치방법에 관한 고찰
이주철(Ju-Cheol Lee),이영철(Young-Chul Lee),김재철(Jae-Chul Kim) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.7
IEC standards do not require to limit the earthing resistance of the concrete-embedded foundation earthing electrode which is installed to a specific value. However, in Korea the value of 5Ω and below applies to the earthing resistance for a domestic customer whose receiving voltage is 22.9㎸. This paper calculates the minimum area and volume of the concrete-embedded foundation earthing electrode in order to obtain a specific value of the earthing resistance when the electrode of the building’s lightning protection system and that of its power system are interconnected. It also suggested the most appropriate method of installing the foundation earthing electrode, taking the electric characteristics of concrete into account.