Electrical insulator comprising an open cell dielectric solid

Details Electrical insulator comprising an open cell dielectric solid Electrical insulator comprising an open cell dielectric solid

H - Electricity

02

G

337/49

H02G 15/02 (2006.01) H01B 19/02 (2006.01) H02G 15/06 (2006.01)

Patent

CA 1078034

ELECTRICAL INSULATOR COMPRISING AN OPEN CELL DIELECTRIC SOLID Abstract of the Disclosure An electrical insulation system includes a new and improved monolythic, polymeric, porous, open cell, fully impregnable, dielectric solid and an impregnating substance that may be applied to the dielectric solid either at the factory prior to shipment or in the field prior to or during installation. The dielectric solid is preformed to enable the quick and easy field installation of the insulation system in electrical apparatus. In addition, the porous, open cell nature of the dielectric solid in which very small communicating open cells are substantially evenly distributed throughout substantially all of the dielectric solid enables a dielectric fluid, such as a dielectric oil, to pass through the dielectric solid and thereby impart the self-healing characteristic of impregnated layered paper insulation to the new and improved insulation system. In a fluid dielectric system, the impregnating substance may be a dielectric oil or other dielectric liquid. In a solid dielectric system, the impregnating substance is used to fill the open cells or voids throughout the dielectric solid and may be an initially low viscosity dielectric liquid that is inserted into the dielectric solid along with an immobilizing agent and subsequently transformed by chemical reaction into a dielectric gel immobilized within the dielectric solid. The dielectric solid may be formed in accordance with either a sintering process or with a filamentizing process.

268317

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