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디지털 신호 처리 기반 저압 차단기용 전자식 계전기 개발
박병철(Byung-Chul Park),손종만(Jong-Man Shon),송성근(Sung-Kun Song),신중린(Joong-Rin Shin) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.5
A low voltage circuit breaker protects electrical equipments from over current and short faults of system by cutting the power supply. The breaker use a thermal magnetic type trip device from the past. In recent years, electronic type relays are applied due to useful functions and services. The purpose of this development is full digitalizing of relay functions of a low voltage breaker. It includes separation of current sensor from current transformer, digital signal processing, high speed relaying, and voltage measuring for power meter. The suggestions are tested and implemented by making prototype and testing its all relay functions.