• DocumentCode
    2535805
  • Title

    The characteristics of insulation resistance of transformers

  • Author

    Naiqing Wang ; Fa Chang

  • Author_Institution
    Electr. Power Res. Inst., Beijing
  • fYear
    1988
  • fDate
    12-16 Sep 1988
  • Firstpage
    463
  • Abstract
    It has been demonstrated that a double-layered dielectric model could approximately describe and explain the absorption phenomena of the oil-paper insulation of a transformer after data measured with a Megger-meter was fitted to curves. Some insulation is shown to have high insulation resistance but low absorption ratio (R60"/R15") owing to its long absorption process. In this case, the polarization index (R10\´/R1\´) is recommended as a better criterion
  • Keywords
    composite insulating materials; insulation testing; maintenance engineering; organic insulating materials; power transformers; transformer insulation; absorption phenomena; absorption ratio; characteristics; double-layered dielectric model; insulation resistance; megohmmeter measurements; oil-paper insulation; polarization index; Computer errors; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Electrical resistance measurement; Equations; Equivalent circuits; Oil insulation; Power transformer insulation; Temperature;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
  • Conference_Location
    Beijing
  • Type

    conf

  • DOI
    10.1109/ICPADM.1988.38434
  • Filename
    38434
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2535805