The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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The Characteristics of the Over-current of Shielded Cable and the Fusing Current of Carbon Fiber

탄소섬유의 용단전류 및 차폐 케이블의 과전류 특성

  • Kim, Young-Seok (Electrical Safety Research Institute, Korea Electrical Safety Corporation) ;
  • Kim, Taek-Hee (Electrical Safety Research Institute, Korea Electrical Safety Corporation) ;
  • Kim, Chong-Min (Electrical Safety Research Institute, Korea Electrical Safety Corporation) ;
  • Shong, Kil-Mok (Electrical Safety Research Institute, Korea Electrical Safety Corporation)
  • Received : 2012.08.26
  • Accepted : 2016.09.27
  • Published : 2016.10.01
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Abstract

In this paper, we investigated the fusing current of carbon fiber and thermal properties of carbon fiber and metal shielded cable due to over-current. The fusing current value for the metal-coated carbon fiber was 5.3A in 3K, 7.4K and 13.05A in 12K. And if it exceeds 50% of the fusing current was broken with a rapid voltage rise. In the case of carbon fiber shielded cable, the temperature of the PVC sheath increased somewhat in the allowable current range. However, the temperature of PVC sheath rapidly increased to $128.1^{\circ}C$ in the 2 time allowable current range. This value is $10^{\circ}C$ higher than the temperature of PVC sheath on the metal screen cable, because the resistance of the carbon fiber is high and heat transfer rate is slow.

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References

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