대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2008년도 제39회 하계학술대회
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- Pages.2100-2101
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- 2008
과전류 및 단락사고 방지용 전기안전 제어장치에 관한 연구
A Study on Electric Safety Control Device for Prevention of Over Current and Short Circuit Faults
- Jo, Si-Hwan (Kangwon National University) ;
- Kwak, Dong-Kurl (Kangwon National University) ;
- Jung, Do-Young (Kangwon National University) ;
- Shim, Jae-Sun (Kangwon National University) ;
- Kim, Jung-Sook (Kangwon National University)
- 발행 : 2008.07.16
초록
This paper is studied on a protective control system for electrical fire and electrical faults due to over current or electric short circuit faults by using electrical thermal characteristics of PTC (Positive Temperature Coefficient) thermistor and current response characteristics of high sensitive reed switch. The PTC thermistor has characteristic of positive resistivity temperature coefficient according to the temperature variation, which is construction of a regular square and cube demarcation with BaTiO3_Ceramics of positive temperature coefficient. Also PTC thermistor shows the phenomenon which is rapidly increased in the resistivity if the temperature is increased over Curie temperature point, and reed switch, which is used for electrical fault current sensing devices, have a excellent characteristic of response velocity in degree of
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