Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Zero-Flux Current Transformer, High stability and Wide Band Measuring For AC and DC Current.

넓은 대역폭과 고안정도를 가진 교류, 직류 전류 측정용 영자속 전류 측정기

  • Suh, J.H. (Pohang Accelerator Laboratory, POSTECH) ;
  • Nam, S.H. (Pohang Accelerator Laboratory, POSTECH) ;
  • Ko, I.S. (Pohang Accelerator Laboratory, POSTECH)
  • 서재학 (포항가속기연구소, 포항공과대학교) ;
  • 남상훈 (포항가속기연구소, 포항공과대학교) ;
  • 고인수 (포항가속기연구소, 포항공과대학교)
  • Published : 1998.07.20
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Abstract

To store and maintain electron beams in synchrotron machines, it is very important to read and keep precise magnet current ($<{\pm}50$ ppm). However, accurate DC current measurement tools are not readily available. In this paper, we introduce high precision, wide band zero-flux current transformer that is manufactured and tested at Pohang Accelerator Laboratory. This sensor can measure DC as well as AC current. Accuracy of the current transformer is less than ${\pm}$20 ppm. Performance of the manufactured current sensor is compared with a high precision DCCT which is commercially available sensor.

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