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저압 배선용차단기 절연회복특성 파악을 위한 절연회복전압 측정기법 연구

Title
저압 배선용차단기 절연회복특성 파악을 위한 절연회복전압 측정기법 연구
Other Titles
Study on Measurement Method of Dielectric Recovery Voltage to analysis Dielectric Recovery Characteristic of Molded Case Circuit Breaker
Author
고광철
Keywords
Dielectric Recovery Characteristic; Molded Case Circuit Breaker; Measurement Method
Issue Date
2015-08
Publisher
한국조명.전기설비학회
Citation
조명.전기설비학회논문지, v. 29, NO 8, Page. 49-54
Abstract
Molded Circucit Breaker(MCCB) is a most widely used device to protect loads from the over-current in low power level distribution system. When the MCCB interrupts the over-current, the arc discharge occurred between fixed contact and moving contact to create hot gas. By the Lorentz force due to arc current, the occurred arc is bent to the grids. The grids extend and cool and divide it for arc extinguish. In the majority cases, the MCCB protects loads by interrupting the over-current successfully but in some cases the re-ignition is occurred by hot-gas created during process of interruption. The re-ignition arises when the recovery voltage(RV) is more higher than the recovery strength between contacts and it leads to interruption fault. Therefore to find out the dielectric recovery characteristics of protecting device has a great importance for preventing interruption fault. In this paper, we studies measurement method of the dielectric recovery characteristics considering inherent attribute of the MCCB. To measure the dielectric recovery characteristic of MCCB, we makes an experiment circuit for applying the over-current and the randomly recovery voltage. The measurement methode to find out the dielectric recovery voltage of the MCCB was established and the result was based on experiment results.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE06404502http://hdl.handle.net/20.500.11754/27009
ISSN
1229-4691; 2287-5034
DOI
10.5207/JIEIE.2015.29.8.049
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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저압 배선용차단기 절연회복특성 파악을 위한 절연회복전압 측정기법 연구.pdfDownload
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