Multi-conductor high voltage cable, in particular three-conductor cable
AssigneeN.K.F.Kabel B.V.
InventorsFrederik H. Kreuger, Antonius M. F. J. Van De Laar
Life of this patent
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Abstract
Multi-conductor high voltage cable, in particular a three-conductor cable, each conductor having an extruded polyolefin conductor insulation, said cable further comprising an extruded polyolefin belt insulation surrounding all insulated conductors and an electrically conducting sheath, surrounding the belt insulation. According to the present invention the conductor insulation of each conductor is surrounded by at least one tape or layer of material comprising cells or cavities and/or at least one tape or layer of material comprising cells or cavities is applied between the belt insulation and all insulated conductors. Preferably said tape or layer is formed by swelling tape.
Claims12
Multi-conductor high voltage cable, in particular a three-conductor cable, each conductor having an extruded polyolefin conductor insulation, further comprising an extruded polyolefin belt insulation surrounding all insulated conductors and an electrically conducting sheath, surrounding the belt insulation, wherein the conductor insulation of each conductor is surrounded by at least one tape or layer of material comprising cells or cavities.
Multi-conductor high voltage cable, in particular a three-conductor cable, each conductor having an extruded polyolefin conductor insulation, further comprising an extruded polyolefin belt insulation surrounding all insulated conductors and an electrically conducting sheath, surrounding the belt insulation, and including a layer of metallic armor surrounding said electrically conducting sheath, and wherein at least one tape or layer of material comprising cells or cavities, is applied between the belt insulation and all insulated conductors.
Multi-conductor high voltage cable, in particular a three-conductor cable, each conductor having an extruded polyolefin conductor insulation, further comprising an extruded polyolefin belt insulation surrounding all insulated conductors and an electrically conducting sheath surrounding the belt insulation, wherein the conductor insulation of each conductor is surrounded by at least one tape or layer of material comprising cells or cavities and further including at least one tape or layer of material comprising cells or cavities applied between the belt insulation and all insulated conductors.
Dependencies are inferred from the claim text.