Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2001.11b
- /
- Pages.609-612
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- 2001
Design of Rogowski coil to improve of current measurement sensitivity
전류측정감도 개선을 위한 로고우스키 코일의 설계
- Park, J.N. ;
- Lee, C. ;
- Jang, Y.M. ;
- Kang, S.H. ;
-
Lim, K.J.
;
- Na, D.H.
- 박정남 (충북대학교 전기공학과) ;
- 이청 (충북대학교 전기공학과) ;
- 장용무 (한양대학교) ;
- 강성화 (충청대학 산업안전과) ;
-
임기조
(충북대학교 전기공학과)
;
- 나동희 (충청북도청 경제통상국 기원지업과)
- Published : 2001.11.08
Abstract
Rogowski coil is made having no ferromagnetic material in a core. So the coil cannot be driven into saturation. This result in that Rogowski coils may be calibrated at relatively low currents. and used with confidence at very high currents. However the lowest level of current that can be measured is limited by the sensitivity of the voltage measuring instrument and system noise. Therefore. geometrical effects were investigated in order to measure high sensitivity of low level current and the significant source of error was examined as well. In the results, the source of error was associated with coil designs. i.e. shape and uniformity of coil and a geometrical location of current source inside and outside of the Rogowski coil.