Characterization of dielectric properties of insulating materials for use in an HVDC reference divider

A. P. Elg, M. Kharezy, A. Bergman, J. Hällström

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

    3 Citations (Scopus)

    Abstract

    Dielectric properties of polyethylene (PE), polyoxymethylene (POM) and ceramic glass (MACOR) are compared. Their suitability to act as a support for a resistor chain in a wideband HVDC reference divider is characterized. The support material forms a parallel capacitance to the resistive resistor chain, and a bandwidth of more than 100 kHz is needed. The frequency dependence of dielectric constant has been measured in the range 20 - 100 kHz. The depolarization current of these materials was measured to be at least 6 orders of magnitude lower than the current through the resistive chain. Neither MACOR nor PE does build up space charge which POM does. Possessing the highest dielectric constant makes MACOR well suited for the application.

    Original languageEnglish
    Title of host publication2012 Conference on Precision Electromagnetic Measurements, CPEM 2012
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages80-81
    Number of pages2
    ISBN (Electronic)978-1-4673-0442-9
    ISBN (Print)978-1-4673-0439-9
    DOIs
    Publication statusPublished - 3 Oct 2012
    MoE publication typeA4 Article in a conference publication
    Event2012 Conference on Precision Electromagnetic Measurements, CPEM 2012 - Washington, DC, United States
    Duration: 1 Jul 20126 Jul 2012

    Conference

    Conference2012 Conference on Precision Electromagnetic Measurements, CPEM 2012
    Abbreviated titleCPEM
    Country/TerritoryUnited States
    CityWashington, DC
    Period1/07/126/07/12

    Keywords

    • current measurement
    • dielectric
    • high-voltage techniques
    • HVDC
    • metrology

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