한국신뢰성학회지:신뢰성응용연구 (Journal of Applied Reliability)
- 제9권1호
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- Pages.37-45
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- 2009
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- 1738-9895(pISSN)
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- 2733-8320(eISSN)
전자식 전력량계의 수명평가
Lifetime Assessment of Electronic Watt-hour Meters
- Seol, Ieel-Ho (Korea Electric Power Corporation) ;
- Park, Jung-Won (Korea Testing Laboratory)
- 발행 : 2009.03.24
초록
Recently mechanical watt-hour meters are being replaced by electronic watt-hour meters. The replacement period of mechanical watt-hour meters is 7 years. This period is based on long term historical data. The replacement period of electronic watt-meters is also 7 years. This period is determined using the replacement period of mechanical watt-hour meters. However lifetime of mechanical watt-hour meters is different from the lifetime of electronic meters. In order to determine desirable replacement period of electronic watt-hour meters, accelerated life tests of major components in electronic watt-hour meters were performed. The test results showed that LCD was the component which had the shortest lifetime. In this paper, lifetime of electronic watt-hour meters manufactured by 3 company was estimated and life test standard for LCD was developed.