KIEE International Transaction on Electrical Machinery and Energy Conversion Systems

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Establishment of a National Primary Inductance Standard Unit

  • Kim Han Jun (Dev. of Electromagnetic Metrology, Electricity and Magnetism Group, Korea Research Institute of Standards and Science(KRISS)) ;
  • Lee Rae Duk (Dev. of Electromagnetic Metrology, Electricity and Magnetism Group, Korea Research Institute of Standards and Science(KRISS)) ;
  • Semenov Yu. P. (D.I.Mendeleyev Institute for Metrology (VNIIM)) ;
  • Han Sang Ok (Dept. of Electrical and Electronic Engineering, Chungnam University)
  • Published : 2005.09.01
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Abstract

A portable primary inductance standard set that includes a Maxwell-Wien bridge and a 10 mH standard inductor installed in a thermostat has been developed at KRISS. Two auxiliary resistance capacitance networks (analogous to a 'Wagner ground') provide excellent stability of the bridge balance and impose less strict requirements on the components of these networks. Removable capacitance and ac-dc resistance standards used in the bridge arms made it possible to reproduce 10 mH and 100 mH inductance values in the frequency range of 500 Hz to 3 kHz. From investigations of this standard and preliminary comparison with VNIIM (D. I. Mendeleyev Institute for Metrology), the results have demonstrated that the bridge can be used as a part of the transportable inductance standard with a measurement uncertainty within (1-3) $\mu$H/H at frequencies of 1 kHz and 1.6 kHz. The application of the bridge as a constituent part of the transportable standard gives us an opportunity to eliminate the influence of the standard inductors.

Keywords

References

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