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INMETRO’S PRIMARY AC-DC CURRENT TRANSFER STANDARD BASED ON PMJTCS

R. Afonso, M. Klonz, R. M. Souza, R. P. Landim
  • Abstract:
    This paper describes the new primary standard for the ac-dc current transfer at Inmetro, based on PMJTCs and the new shunts manufactured by Fluke for rated currents from 10 mA up to 20 A. The build-up of the ac-dc current scale is described together with the uncertainty budgets which result in final uncertainties at 5 A of 6 μA/A to 12 μA/A in the frequency range from 10 Hz to 100 kHz. These are small compared to international standards.
  • Keywords:
    ac-dc difference, PMJTC, comparison
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  • DOI:
    _unreg_tc4-2011.049

Event details:

  • IMEKO TC:
    TC4
  • Event name:
    TC4 Symposium 2011
  • Title:

    XVIIIth IMEKO TC4 International Symposium on Measurement of Electrical Quantities (part of Metrologia2011, together with IX International Congress on Electrical Metrology - IX SEMETRO)

  • Place:
    Natal, BRAZIL
  • Time:
    27 September 2011 - 30 September 2011