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Precise Measurement of High Current Shunt Resistance  

Kim K.-T. (한국표준과학연구원)
Han K.-S. (한국표준과학연구원)
Kwon S.-W. (한국표준과학연구원)
Kim M.-S. (한국표준과학연구원)
Jeong J.Y. (한국전기연구원)
Kim I.S. (한국전기연구원)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.9, 2005 , pp. 403-406 More about this Journal
Abstract
Precise measurement of extremely low resistance shunt is important for characterization and calibration of high current instruments. We tested resistance measurement method for extremely high current shunt (up to 140 kA), where resistance is determined by precise measurement of voltage drop at 10 A test current in the frequency range of 40 Hz to 10 kHz. For the extremely low ac voltage to be precisely measured, a verification of the measurement method was also carried, where the inherent noise is systematically evaluated. The measurement uncertainty was estimated to be $1\;\%\;at\;95\;\%$ confidence level (k=2) for about 50 $\mu\Omega$.
Keywords
분류기;저저항;대전류;정밀측정;교류저전압;
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