• DocumentCode
    1470735
  • Title

    Simple absolute method for current transformer calibration

  • Author

    Corney, Andrew C.

  • Author_Institution
    Meas. Standards Lab. of New Zealand, Ind. Res. Ltd., Lower Hutt, New Zealand
  • Volume
    50
  • Issue
    2
  • fYear
    2001
  • fDate
    4/1/2001 12:00:00 AM
  • Firstpage
    278
  • Lastpage
    281
  • Abstract
    A simple mains-frequency current transformer ratio build-up scheme has been developed which enables calibration by absolute means of ratios from 5 A:5 A to 500 A:5 A with uncertainties of 0.03 parts in 106 and 0.05 μrad. The build-up is based on series-parallel interchange of primary windings of two-stage transformers with magnetically shielded second stages
  • Keywords
    calibration; current transformers; electric current measurement; measurement standards; measurement uncertainty; 5 A; 500 A; CT ratio scale; absolute method; comparison circuit; current transformer calibration; current transformer ratio buildup scheme; equivalent circuit; low uncertainty; magnetically shielded second stages; mains-frequency; power standard; primary windings; series-parallel interchange; traceability; two-stage transformers; Calibration; Capacitance; Couplings; Current transformers; Electrical equipment industry; Impedance; Magnetic cores; Measurement standards; Toroidal magnetic fields; Transformer cores;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/19.918121
  • Filename
    918121
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1470735