Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2002.07b
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- Pages.831-834
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- 2002
The Electrical De연세대학교 전기전자공학과gradation Rate of a Bi-2223 wires by the Various Transferred Current
수송전류에 따른 Bi-2223 선재의 전기적 열화
- Bae, Duck-Kweon (Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
- Lee, Sang-Jin (Dept. of Electrical Eng., Uiduk Univ.) ;
- Bae, Joon-Han (KERI) ;
- Ko, Tae-Kuk (Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
- Park, Kyong-Yop (KERI)
- Published : 2002.07.10
Abstract
Several companies in the world are marketing superconducting wires, films and bulks. High-Tc superconducting systems using these superconductors are begun to commercialize. For the successful realization or commercialization of superconducting system used Bi-2223 wires, the database on the degradation of critical current is essentially needed. In this paper, the electrical degradation of a Bi-2223 wires is measured. The electrical degradation rate was measured after the certain time of continuous current transportation. Specimens have the length of 190cm and double-pancakes coil have the length of 10m were tested. Tested Bi-2223 wires are commercialized product has 115A of Ic. When the transportation current was 95% of Ie, the degradation of Ic was appeared after 5 hours of transportation time. When the transferred current is enough larger than Ic, Bi-2223 double pancake is damaged seriously.
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