Precision Calibration System for Partial Discharge Calibrators

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    Partial discharge calibrators need to be periodically calibrated traceable to national standards. VTT MIKES, the National Metrology Institute (NMI) of Finland, has official expertise to calibrate the apparent charge of PD calibrators from 1 pC to 100 nC according to IEC 60270. Recently, VTT MIKES has developed techniques to measure charges as low as 0.01 pC with 3 % uncertainty (k = 2). VTT MIKES has participated to an intercomparison of four NMI’s in 2018 and the results indicate that VTT MIKES can both expand their official measurement capabilities and lower their uncertainties. This paper presents VTT MIKES’s precision calibration system for PD calibrators. Additionally, an overview of commercial PD calibrators’ performance is provided and compared to the requirements of IEC 60270. Data is based on the calibrations performed during the last 10 years.
    Original languageEnglish
    Title of host publicationProceedings of the 26th Nordic Insulation Symposium, NORD-IS 19
    PublisherNordic Insulation Symposium
    Publication statusPublished - 8 Aug 2019
    MoE publication typeA4 Article in a conference publication
    Event26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 - Tampere, Finland
    Duration: 12 Jun 201914 Jun 2019

    Publication series

    SeriesProceedings of the Nordic Insulation Symposium


    Conference26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19
    Internet address


    • partial discharges (PD)
    • calibrators
    • measurement uncertainty
    • calibration


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