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US 5,481,070 AGranted
Direct current oil-filled self contained cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsMasayuki Hirose, Ryosuke Hata, Yoshiteru Nakaura
Life of this patent
Estimating the term…
Abstract
A DC OF cable has its main insulation composed of a composite insulation tape comprising a low dielectric loss film and kraft paper (PPLP). 1-10 sheets of kraft paper are wound on the PPLP main insulation as a layer on the inside and/or the outside thereof.
Claims15
A DC OF cable, comprising:
- a cable conductor having an interior oil passage;
- a main insulation surrounding said cable conductor, said main insulation comprising a composite tape that is composed of a low dielectric loss plastic film laminated with kraft paper;
- and
- a carbon winding layer comprising 3-5 sheets of carbon paper located at at least one of a first position inside said main insulation and outside of said cable conductor and a second position outside of said main insulation.
1 more element
A DC OF cable, comprising:
- a cable conductor having an interior oil passage;
- a main insulation surrounding said cable conductor, said main insulation comprising a composite tape that is composed of a low dielectric loss plastic film laminated with kraft paper;
- a carbon winding layer comprising 3-5 sheets of carbon paper arranged on said cable conductor between said main insulation and said cable conductor;
- and
- a kraft paper winding layer comprising 1-10 sheets of kraft paper arranged at at least one of a first position inside said main insulation and outside of said cable conductor and a second position outside of said main insulation.
2 more elements
Dependencies are inferred from the claim text.