Abstract: A connection arrangement for electrically interconnecting the shields of so-called “cold-dielectric” superconductor cables in the context of a muiltiphase superconductive electrical link, each super-conductor cable comprising a central superconductor presenting superconductivity at cryogenic temperature, electrical insulation surrounding the central conductor, a shield surrounding the electrical insulation, and a cryostat surrounding said shield. According to the invention, the arrangement comprises a superconductive link between said shields, said superconductive link comprising a link superconductor and a cryogenic sheath surrounding said link superconductor, each of the two ends of said link superconductor being connected to a respective one of said shields by connection means that are both electrically and thermally conductive. The invention is particularly applicable to high voltage electricity.

Abstract: An optical cable unit has a metal tube with a longitudinal laser-welded seam and at least one optical waveguide in the interior of the metal tube. The metal tube has a first inner layer and a second outer layer, where the first inner layer is made from copper and the second outer layer is made from austenitic steel. The longitudinal seam of both layers is laser welded and the seams of the layers are in superimposed alignment, where the laser welding is performed by a CO2 laser.

Abstract: A device for transmitting signals or current between end points which can be moved relative to one another is specified between which at least two flat ribbon lines (4-7) extending in turns and accommodated in an essentially circular cassette are arranged which have at least one electrical conductor, t the end points, continuing lines can be connected to the flat ribbon lines (4-7)—The cassette consists of a rotor (1) which is rotatable about its axis, and a stationary stator (2), which enclose between them an annular winding space (3) for accommodating the flat ribbon lines (4-7) One of the flat ribbon lines being arranged between one end point each of the rotor (1) each and one end point of the stator (2), in such a manner that it rests against he rotor (1) with at least one first turn and, after passing through a U-shaped reversing point, against the stator (2) with at least one second turn, the direction of winding of which is opposite to that of the first turn.

Abstract: The invention relates to a process for applying a resistive layer on an oxide superconducting element for electrically decoupling superconducting filaments contained in the element, an oxide superconducting element having a resistive layer and use thereof, in particular in ac applications, the resistive layer being formed by chemically converting the surface of a conducting metal coating sheating the superconducting core of said filaments into a salt of a metal constituting said conducting coating.

Abstract: The present invention provides a box and a method of shipping a cable drum enabling the cable to be unwound in full or in part while the drum is inside said box. The shipping box comprises a bottomless chest for surrounding the drum and a device for unwinding the cable wound on the drum, which drum is provided with an axial opening through which there passes a shaft. The device has two supports each provided with a respective bearing, the supports being secured to two opposite internal side walls of the chest, the box being capable of occupying two positions: a transport position in which the shaft of the drum is not supported by the bearings, and a cable-unwinding position in which the shaft of the drum is supported by the bearings, thus enabling the drum to rotate about said shaft.

Abstract: A method and system for providing protection for a superconducting electrical cable located in a utility power network includes detecting a fault current on the superconducting electric cable, determining the cumulative total energy dissipated in the superconducting electrical cable from the fault current and at least one prior fault current over a predetermined time period, and determining whether to disconnect the superconducting electrical cable from the utility power network on the basis of the cumulative total energy dissipated.

Abstract: The invention specifies an electrical cable with at least two electrical conductor cores (1), which are stranded together, and each of which consists of an electrical conductor (3) enclosed in insulation (2), and with a sheath (5) of insulating material that encloses the conductor cores (1). To protect the cable, which in itself is fully functional, from red-hot particles, the sheath (5), which has a wall thickness of at least 0.5 mm, is covered with a barrier in the form of a flameproof strip (6), which is wound in at least one course with overlapping edges. The strip (6) is covered with a layer (7) of a material that swells when exposed to moisture and that is surrounded by an outer sheath (8) of insulating material.

Abstract: A subsea power cable includes a conductor encompassed by a layer of high voltage insulation material including inner and outer semiconducting layers. The insulated conductor is encompassed by a number of armouring elements each consisting of fibers enclosed within a semiconductive layer.

Abstract: An elongated object for use in subsea having a heating pipe and an electrical cable fixed to the surface of the heating pipe. The electrical cable has a protective sleeving for surrounding the electrical cable, composed of a series of elongated synthetic plastics components arranged end-to-end. Each component is an extruded frame work type hollow profile suitable for slowing down the impact over a long deformation path. A hollow space is disposed between the electrical cable and the protective sleeving allowing the cable to move into the protective sleeving.

Abstract: The present invention relates to a metal-ceramic high temperature super-conductor composite having improved mechanical stability and cooling performance as well as to an improved method for bonding a ceramic high temperature superconductor to a metal surface wherein a bonding is provided, avoiding damage during the cooling of the composite below the critical temperature of the superconductor.

Abstract: An insulation material based on polymeric plastic is specified, to which glass particles that consist of types of glass with different softening points are added for stabilization in case of fire. To provide protection in a very broad temperature range, at least three types of glass with different softening points are used as the glass particles, namely, a first type of glass with a softening point below about 470° C., a second type of glass with a softening point above about 470° C. and below about 620° C., and a third type of glass with a softening point above about 760° C.

Abstract: A communication cable (K) with a large number of conductor cores (2) includes insulated conductors in which the conductor cores (2) are stranded with one another to form stranded elements (1). A large number of the stranded conductor cores are combined in the cable core (8). The insulation of the conductors (3) includes an inner layer (4) of a flameproof insulating material and an outer layer (5), which includes a polyolefin. The outer layer of the insulation is produced by extrusion, and is permanently joined with the inner layer (4). A closed sheath (9) includes a metal strip applied over the cable core. The outer sheath (10) includes a non-combustible material applied over the inner sheath (9), with which it is adhesively bonded.

Abstract: A subsea cable (3) designed to extend from a floating structure (1) on the sea surface down to a subsea structure (2) on the sea floor with a first portion (3a) extending from the floating structure (1) to the sea floor and a second portion (3b) laid in or on the sea floor has an outer sheath and cables and/or conduits inside said outer sheath. The second portion (3b) of the subsea cable (3) is provided with at least one disc-shaped anchor (4) attached to the subsea cable (3b) with clamps. The at least one disc-shaped anchor (4) makes movement of the second portion (3b) more difficult.

Abstract: A process is provided for the production of a superconducting cable having a single cable core that contains at least one elongated superconducting element and a flexible tube that which surrounds the cable core. The process includes continuously pulling the single cable core from a supply unit, continuously pulling a metal strip from a strip supply unit and continuously forming a slotted tube around the cable care with the metal strip to form a slotted tube. The longitudinal slot of the slotted tube is welded shut corrugating the welded tube with the cable core inside the tube. The then semi-finished superconducting cable is wound in at least one turn on a cable drum, and the ends of the cable core are mechanically joined to the ends of the corrugated tube while the cable is on the cable drum.

Abstract: The invention relates to an optical fiber connector comprising a ferrule disposed in a connector body and receiving the optical fiber in a longitudinal bore, said ferrule being subjected to a compression spring disposed on a part extending the ferrule, referred to as a “counter-ferrule”, and pressed by a closure part secured to said connector body. According to the invention, the ferrule and the counter-ferrule are constituted by two separate parts, and an optical fiber holder element is inserted between these two separate parts, said holder element being capable of being caused to hold the optical fiber from outside the connector, and said holder element is also capable of being released from outside the connector.

Abstract: A multi-tube fiber optic cable maintains a plurality of fiber tubes, each fiber tube containing at least one optical fiber therein. The plurality of fiber tubes are disposed apart from a central axis of the cable. A plurality of strength members are disposed apart from a central axis of said cable. An outer jacket surrounds the plurality of fiber tubes and the plurality of strength members and is formed from a pressure extruded polymer. The plurality of fiber tubes and strength members are held in either one of an oscillated geometry or a helical geometry by the pressure extruded jacket.

Abstract: A tight buffer optical fiber ribbon is formed from a plurality of optical fibers, each of which has a glass core, a primary coating and a second tight buffer layer. The ribbon includes first and second stand off legs, each having an inner strength core and an outer tight buffer layer. The plurality of optical fibers are coupled to one another in a substantially sequential ribbon arrangement via their tight buffer layer. The first stand off leg is attached to the substantially sequential ribbon arrangement of the optical fibers at a first end, and the second stand off leg is attached to the substantially sequential ribbon arrangement of the optical fibers at a an opposite second end.

Abstract: The present invention relates to a superconducting current limiting device comprising a superconductor component (1) wherein each superconductor component (1) comprises a superconductor body (2) on which a coil (3) is wound the coil being electrically connected to the superconductor body (2) wherein in the superconducting current limiting device a magnetic field is generated on transition of the superconductor from the superconducting state to the normal conducting state.

Abstract: An abrasion-resistant jacket for a flexible cable with a cable core and a jacket made of an abrasion-resistant thermoplastic material surrounding the cable core, particularly for a drag chain cable or a robot cable. The jacket includes an inner extruded plastic layer (2) and an outer jacket layer (4). Between the inner plastic layer (2) and the outer jacket layer (4) is a layer (3) of monofilaments made of a chemically and thermally stable material with a visual coverage of 40 to 70%. The outer jacket layer (4) is applied by pressure extrusion, such that the spaces in the layer (3) are almost filled by the material of the outer jacket layer, and the layer (3) adheres to the inner sheath layer (2).

Abstract: A subsea umbilical includes electrically insulated power conductors, fiber optic elements, electrical signal cables, and fillers within a common outer cover. At least one of the electrical signal cables is enclosed within a dedicated metal tube, and the umbilical is hung off on an offshore platform or the like and the metal tube containing the electrical signal cable is hung off separately from the umbilical.