The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of a Ratio Calibration Bridge for Inductive Voltage Dividers

유도형 전압 분할기의 비 교정용 브리지 개발

  • 강전홍 (한국표준과학연구원 전자기표준부 전기, 자기그룹) ;
  • 한상옥 (충남대학교 공대 전기공학과) ;
  • 김한준 (한국표준과학연구원 전자기표준부 전기, 자기그룹)
  • Published : 2005.05.01
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Abstract

A inductive voltage divider(IVD) is widely used as a ratio arm of precise impedance measurement bridges at low frequencies of audio frequency range and a well fabricated IVD has ratio error of $10^{-7}$ order without any calibration. Recently, the order of $10^{-8}$ of the best measurement uncertainty is needed for calibration and maintenance of impedance standards as national standards. In order to achieve that uncertainty, the IVD which is used for a ratio arm of precise impedance measurement bridge should be calibrated within the uncertain of order of $10^{-8}$ For this purpose, a ratio calibration bridge for IVDs has been developed. The measurement uncertainties of both inphase and quadrature of the bridge are analyzed less then $3{\times}10^{-8}$ respectively at 1 kHz and 25 V.

Keywords

References

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