지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.5
- 수록면
- 1,647 - 1,653 (7page)
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초록· 키워드
오류제보하기
In the case of an urban rail chopper type subway train, varistors have been installed for protecting usual electronic equipments, semiconductor devices(diodes, transistors, thyrister, etc.) communications, measuring, control device and absorbing opening & closing surge of electromagnetic valve. These varistors were steadily reduced dielectric strength as becoming superannuated. Thus there is a problem that reacts more sensitive at the same surge in the general control operation.
On existing maintenance, there is not specific standard to replace superannuated varistor. So when maintaining chopper type subway train, all varistors or old varistors that workers checked a discoloration & crack with the naked eye and noticed degradation smell by deterioration are replaced.
This study suggests detail standards for judgement that varistors are good or bad chopper type subway train. and it draw a efficient maintenance which efficient maintenance can check more easy the degradation properties variation.
On existing maintenance, there is not specific standard to replace superannuated varistor. So when maintaining chopper type subway train, all varistors or old varistors that workers checked a discoloration & crack with the naked eye and noticed degradation smell by deterioration are replaced.
This study suggests detail standards for judgement that varistors are good or bad chopper type subway train. and it draw a efficient maintenance which efficient maintenance can check more easy the degradation properties variation.
목차
ABSTRACT
1. 서론
2. 배리스터 개요
3. 결론
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UCI(KEPA) : I410-ECN-0101-2013-326-000451907