• DocumentCode
    3779515
  • Title

    Treeing in polyethylene as a prelude to breakdown

  • Author

    D. W. Kitchin;O. S. Pratt

  • Author_Institution
    Simplex Wire and Cable Company, Cambridge, Mass.
  • fYear
    1957
  • Firstpage
    43
  • Lastpage
    45
  • Abstract
    This paper deals with latent damage that consists of “trees” formed by partial breakdown of defective or locally overstressed regions. This cannot be observed in opaque insulation like rubber, but the discovery of trees in polyethylene stimulated interest in this phase of study. Figure 1 shows trees in various stages in contaminated PE after 21 months at 68 volts per mil AC. They start from the conductor, from the outer surface, and from particles and fibres within the PE.
  • Keywords
    "Electric breakdown","Needles","Conductors","Polyethylene","Rubber","Stress"
  • Publisher
    ieee
  • Conference_Titel
    Electrical Insulation, 1957. annualReport 1957. Conference on
  • Print_ISBN
    978-1-5090-3134-4
  • Type

    conf

  • DOI
    10.1109/EIC.1957.7507287
  • Filename
    7507287