Patent classifications
H01B7/2825
Cable moisture seal assemblies, systems and methods
A sealed cabled assembly includes a cable and a cable moisture seal assembly. The cable includes a cable subcore, a metal shield layer surrounding the cable subcore, and a jacket surrounding the metal shield layer. The cable subcore includes an electrical conductor surrounded by an electrical insulation layer. The cable moisture seal assembly includes a sealant, a electrically conductive jumper member, and an outer sleeve. The cable includes a sealing region section extending from a first axial end to a second axial end, and in which a section of the jacket and a section of the metal shield layer are removed to expose a section of the cable subcore. The insulation layer and the conductor extend through the sealing region section. First and second sections of the jacket extend away from the sealing region section in first and second opposed directions, respectively. First and second sections of the metal shield layer extend away from the sealing region section in the first and second opposed directions, respectively. The outer sleeve surrounds the sealing region section. The sealant is disposed radially between the cable subcore and the outer sleeve, and engages the cable subcore to form a moisture barrier in the sealing region section between the first and second sections of the jacket. The jumper member electrically connects the first and second sections of the metal shield layer.
CABLE AND HARNESS
A cable includes a plurality of electric wires, a tape member wound around the plurality of electric wires, and a jacket that covers an outer periphery of the tape member and includes an urethane-based resin. The tape member includes a nonwoven fabric including one of a polyester, a polypropylene, an aramid fiber, a nylon, an acrylic fiber and a glass fiber. An air permeability of the nonwoven fabric is not less than 30 cc/cm.sup.2/sec.
SHIELDED CABLE
A shielded cable includes signal wires each having a signal conductor covered by an insulator, and a shield conductor comprising a metal foil resin tape spirally and overlappingly wrapped around the two signal wires, wherein an edge portion of the metal foil resin tape is folded back so that the metal foil therein is oriented outward, thereby bringing metal foils, which are arranged on lower and upper sides in the overlapping part of wrapping of the metal foil resin tape, into electrical contact with each other. The shielded cable includes two drain wires provided outside the metal foil resin tape and configured to be in electrical contact with an exposed part of the outwardly folded-back metal foil, which is exposed out of the overlapping part.
Water-stop structure for wire harness
A water-stop structure including a water-stop tube is provided in which the water-stop tube can be brought into intimate contact with a water-stop region in a wire harness having a steep thickness gradient and thus water-stop performance is improved. The wire harness includes a first portion and a second portion that is thinner than the first portion. An inner water-stop tube covers the water-stop region ranging from the first portion to the second portion in a state where the inner water-stop tube is heated and shrunk. An outer water-stop tube covers the inner water-stop tube at a position between a portion on the first portion side and a portion on the second portion side in the water-stop region in a state where the outer water-stop tube is heated and shrunk.
Undersea cable, undersea cable installation structure, and method for installing undersea cable
Ocean floating installations (1) are disposed on the ocean. The ocean floating installations (1) float on the ocean with the lower part of the ocean floating installations (1) being fixed to the seabed by mooring ropes (11). Each of the ocean floating installations (1) is connected at a connection part (5a) to a cable (3), which is a first cable. Each of the cables (3) is connected at a connection part (5b) to a cable (7), which is a second cable. In other words, the ocean floating installations (1) are connected to each other by the cables (3) and the cable (7). A connection is established with the cables (7) at the connection parts (5b) located on the seabed. In other words, the cables (7) are installed on the seabed.
METHOD FOR PRODUCING A CLADDING FOR ELONGATED MATERIAL
The present invention relates to a method for the production of a cladding for elongated material (2), in particular a sheath for cable sets. In this method, an adhesive tape (3, 4) consisting of a carrier (4) and a first adhesive coating (3) which substantially fully covers the front side of the carrier (4) is combined with an adhesive-free carrier tape (5) such as to form a laminate (3, 4, 5). This is carried out such that the adhesive tape (3, 4) is applied to the carrier tape (5) with its first adhesive coating (3) in such a way that a first projection (U.sub.1) is defined along at least one of the two longitudinal edges of said adhesive tape. According to the invention, the carrier (4) of the adhesive tape (3, 4) is additionally provided with a further second adhesive coating (7) substantially in parts of its rear side.
High temperature submersible power cable
A method can include extruding an electrically insulating elastomeric compound about a conductor where the electrically insulating elastomeric compound includes ethylene propylene diene monomer (M-class) rubber (EPDM) and an alkane-based peroxide that generates radicals that form decomposition products; cross-linking the EPDM via radical polymerization to form an electrically insulating layer about the conductor; heating the cross-linked EPDM to at least 55 degrees C. to reduce the concentration of the decomposition products in the electrically insulating layer; and disposing a gas barrier layer about the electrically insulating layer.
CuNiSi alloy cable sheathing
A water blocking layer/sheathing is provided for subsea power cables made from a CuNiSi-alloy.
SUBMARINE POWER CABLE
A submarine power cable is provided having stranded conductor(s) and an insulation system, each individual stranded conductor, at given intervals, being compressed across an area to form a plurality of watertight partitions along a length of the of the submarine power cable. A method provides a plurality of watertight partitions along a length of the submarine power cable. The method includes, at a given point, arranging a compression tool around an outer circumference of the stranded conductor, using the compression tool to compress the stranded conductor, releasing the compression tool from the stranded conductor, and repeating the compression at a number of different points and using the compression tool to compress the stranded conductor at each of these points, thereby forming a plurality of watertight partitions along the length of the submarine power cable.
Process for manufacturing a submarine power cable and power cable so manufactured
Process for manufacturing a power cable includes: providing a power cable core having an electric conductor; providing a copper foil; providing a protective strip over the power cable core, the protective strip having a radially inner and outer surface and being made of copper with a coating; folding the copper foil around the power cable core so as to bring two longitudinal copper foil rims to contact one to the other; welding the two contacted longitudinal copper foil rims thus obtaining a copper sheath in form of a tube with a welding seam; reducing the diameter of the copper sheath to put it into direct contact with the power cable core and the protective strip; heating the protective strip and the copper sheath at a temperature higher than the melting temperature of the coating of the strip so that the coating fuses in the welding seam.