Patents Examined by Hyuny S. Songh
  • Barrier of condenser type for field control in transformer bushing terminals
    Patent number: 5227584
    Abstract: The invention relates to a condenser type barrier for field control in transformer bushings and their connection to the conductor of a transformer winding for transformers used in HVDC converter plants. The condenser barrier is arranged as a solid of revolution with concentrically laid condenser layers. It is formed from both ends with inwardly-directed, straight frustums of cones with equally large smallest bases, between which the condenser barrier is formed as a concentric inner, straight circular cylinder.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: July 13, 1993
    Assignee: Asea Brown Boveri AB
    Inventors: Lars Holmstrom, Lennart Strandberg