A power cable can include a conductor; an insulation layer disposed about the conductor where the insulation layer includes a first polymeric material; and a shield layer disposed about the insulation layer where the shield layer includes a second polymeric material where a solubility parameter of the first polymeric material is less than a solubility parameter of the second polymeric material.

Provided is a semiconductive resin composition which may be used for both an internal semiconductive layer and an internal semiconductive layer of a power cable, and in particular has excellent peelability to be used for the external semiconductive layer. In addition, a novel semiconductive resin composition having improved thermal resistance and mechanical physical properties, and an improved deterioration property is provided. The semiconductive resin composition for a cable includes: 1 to parts by weight of a multiwalled carbon nanotube as a conductive particle, and 1 to 10 parts by weight of an enhancer, based on 100 parts by weight of a composite resin including 10 to 250 parts by weight of an ethylene-(meth)acrylate-based resin and 1 to 100 parts by weight of an olefinic elastomer, based on 100 parts by weight of a polypropylene-based resin.

Provided is a semiconductive resin composition which may be used for both an internal semiconductive layer and an external semiconductive layer of a power cable, and in particular has excellent peelability to be used for the external semiconductive layer. In addition, a novel semiconductive resin composition having improved thermal resistance and mechanical physical properties, and an improved deterioration property is provided. The semiconductive resin composition for a power cable includes: 20 to 70 parts by weight of any one or two or more conductive particles selected from the group consisting of carbon black, graphite and graphene, based on 100 parts by weight of a composite resin including a polypropylene homopolymer having a melting point of 150 to 170 C. and an ethylene-(meth)acrylate-based resin.

An alternating current (AC) power cable includes a conductor surrounded by at least an inner semiconductive layer including a first semiconductive composition, an insulation layer including a polymer composition, an outer semiconductive layer including a second semiconductive composition, and optionally a jacketing layer including a jacketing composition, in that order. The polymer composition of the insulation layer includes an unsaturated low density polyethylene (LDPE) copolymer of ethylene with one or more polyunsaturated comonomers and a crosslinking agent. The polymer composition of the insulation layer has a dielectric loss expressed as tan (50 Hz) of 12.010.sup.4 or less, when measured at 25 kV/mm and 130 C. according to Test for Tan measurements on 10 kV cables.

The present invention relates to a shaped filler for accommodating and protecting the optical unit for a submarine cable (hybrid cable) and a submarine cable having the same.

The invention relates semiconductive polyethylene composition, for use in power cables, with improved processability compared to other available semiconductive polymer compositions. This invention relates to a cable with a layer comprising the semiconductive polyethylene composition.

A semiconductive composition and a power cable having a semiconductive layer formed therefrom may be provided. More particularly, a semiconductive composition may be provided that is environmentally friendly, excellent in mechanical properties, heat resistance, etc., and excellent in extrudability having a trade-off relationship therewith and a power cable having a semiconductive layer formed therefrom.

A submarine power cable including: a plurality of power cores, each including a conductor, and an insulation system arranged around the conductor, wherein the insulation system includes an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, an outer semiconducting layer arranged around the insulation layer, an outer layer arranged around the plurality of power cores, and a filler profile arranged in a space between two of the power cores and the outer layer, and a fluid channel arranged inside the filler profile, wherein the fluid channel extends along the entire length of the filler profile for transporting fluid from one end of the submarine power cable to an opposite end of the submarine power cable.

Provided is a power cable and a method for manufacturing a power cable that reduces occurrence of uneven thickness of an insulating layer and voids and peeling due to shrinkage and has good dielectric breakdown strength. The power cable includes the insulating layer containing 15 mass % or more of a propylene-based resin having a melting point of 110? C. or higher with respect to a whole. The power cable further includes a relationship between a cooling rate X [? C./min] at the time of manufacturing an interface portion in the insulating layer with the inner semiconductive layer and a cooling rate Y [? C./min] at the time of manufacturing a central portion of the insulating layer and is expressed by the relationship (Z), wherein X?Y?0.8 . . . (Z).

A cable includes a conductor and a first semiconductive layer arranged in a radially outer position with respect to the conductor. An insulating layer is arranged in a radially outer position with respect to the first semiconductive layer. A second semiconductive layer is arranged in a radially outer position with respect to the insulating. A conductive screen is arranged in a radially outer position with respect to the second semiconductive layer. A heat block layer is arranged in a radially outer position with respect to the conductive screen. The heat block layer includes a layer made of a fire resistant or a flame retardant halogen-free material. A rubberized glass fiber tape is arranged in a radially outer position with respect to the heat block layer. An outer sheath is arranged in a radially outer position with respect to the rubberized glass fiber tape.