• DocumentCode
    2274415
  • Title

    Corona characteristics of flaws in a solid encapsulated high voltage inverter transformer

  • Author

    Burnham, J. ; Wong, E. ; Ota, H.N.

  • Author_Institution
    Equip. Eng. Divisions, Hughes Aircraft Co., Culver City, CA, USA
  • fYear
    1974
  • fDate
    10-12 June 1974
  • Firstpage
    40
  • Lastpage
    50
  • Abstract
    Thermal stress cracks have been observed in high voltage solid encapsulated transformer cells resulting from stress concentrations of the order of 10 at the interface between a copper plated shield and the resin. These cracks result in a degradation of CIV by a factor of 6. They are characterized by corona pulse spectra having very high amplitudes. Pulses of 50 to 500 pC have been observed at an overvoltage of only 10 to 15 percent.
  • Keywords
    corona; encapsulation; invertors; overvoltage protection; resins; thermal stress cracking; transformer protection; CIV degradation; copper plated resin; copper plated shield; corona pulse spectra; flaws corona characteristics; overvoltage protection; solid encapsulated high voltage inverter transformer; thermal stress cracks; Casting; Coils; Corona; Power transformer insulation; Resins; Stress; Windings;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Power Electronics Specialists Conference, 1974 IEEE
  • Conference_Location
    Murray Hill, NJ
  • ISSN
    0275-9306
  • Type

    conf

  • DOI
    10.1109/PESC.1974.7074324
  • Filename
    7074324
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2274415