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http://dx.doi.org/10.5207/JIEIE.2005.19.2.087

Survey on the Malfunction of MCCB and ELB in Private Electrical Facilities  

Yoo, Jae-Geun (한국전기안전공사 전기안전연구원 진단연구1팀)
Lee, Sang-Ick (한국전기안전공사 전기안전연구원 진단연구1팀)
Jeon, Jeong-Chay (한국전기안전공사 전기안전연구원 진단연구1팀)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.19, no.2, 2005 , pp. 87-93 More about this Journal
Abstract
Recently, nuisance tripping or malfunction of MCCB(Melded Case Circuit Breaker) and ELB(Electrical Leakage Breaker) is being increased according as load circuits and equipments of electrical customers are various and complicated, but investigation of actual conditions on malfunction of MCCB and ELB was not implemented This paper investigated causes and influences of malfunction of MCCB and ELB by making up a question to electrical safety managers of two hundred and eighteen private electrical facilities. The results show that users above $70[\%]$ experienced malfunction of MCCB and ELB, and causes of malfunction are in order aging(above $25(\%)$), nuisance tripping $(above\;22(\%))$, goods badness$(above\;20(\%))$, abnormal power like as harmonics$(above\;20(\%))$ and others $(about\;9(\%))$. Also, second damages due to failure of MCCB and ELB are in order goods production, equipment trouble, information loss, business and operation interrupt, and others. The results of this study can be used in making decisions regarding causes of MCCB and ELB trip.
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Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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