Abstract: The invention relates to a device for connecting together two abutting superconductive cables, each cable being constituted by at least a resistive conductive central support of substantially cylindrical shape, by at least one layer of superconductive material placed around the support, and by an insulating sheath surrounding said layer of superconductive material, the end of each cable being stripped to reveal the central support and said layer of superconductive material, the device being provided with an outer covering of insulating material. According to the invention, the device comprises at least one respective conductive sleeves engaged around the stripped portion of each of the cables, together with a conductive tube containing said sleeves and connected to them.

Abstract: The present invention relates to a quench controlled high temperature superconductor component wherein at least one depression is provided in a surface of the component resulting in a reduced wall thickness, and, wherein an electrical shunt is applied into the depression.

Abstract: A device for making a profiled insulation having an extrusion die with an extrusion tip and a polymer chamber surrounding the extrusion tip. The polymer chamber has at least one air chamber therein. The air chamber is held in place and coupled to the outside of the extrusion die by a vertical fin extending outwards from the extrusion tip. When molten polymer flows through the polymer chamber around the air chamber, an opening is introduced into the polymer such that the profiled insulation is formed as the polymer exits the extrusion die, having a longitudinal cavity therein corresponding to the location of the opening formed by the at least one air chamber.

Abstract: Electric fault current limiter has superconducting elements inside a cryogenic vessel and bushings for connecting an external circuit. The electric fault current limiter (1) includes a cryogenic vessel (2) and superconducting assemblies (5) including high temperature type superconducting elements (HTSC) immersed in a liquid coolant (6) such as liquefied nitrogen. Bushings (25, 28) with conductors (17, 18) are associated with a main body (3) of the vessel (2) such that the conductors (17, 18) extend horizontally from a surrounding space into an ullage space (8) situated between a level (7) of the liquid coolant (6) inside the vessel (2) and a cover (4). The arrangement of the bushings (25, 28) according to the invention allows for removing the cover (4) without dismantling electrical connections between the current limiter (1) and a circuit to be protected as is necessary with prior art limiters.

Abstract: A method for arranging a superconductor cable including the step of laying the superconductive cable core into a cryostat with an overlength in comparison to the axial length of said cryostat. After laying the superconductive cable core, it is cooled to its operating temperature thereby shortening the superconductive cable core relative to the cryostat. After cooling the superconductive cable core, the shortened superconductive cable core is mechanically fixed at its two ends to the ends of the cryostat. After fixing the shortened superconductive cable core, terminations are mounted on the ends of the cable core, such that if the superconductive cable core heats up, the core deforms into a wave or helix inside the cryostat, with the length change that acts on components of the superconductor cable being negligible.

Abstract: A cable end joint assembly (60) for a heating cable is provided, and a method for manufacturing of said joint assembly. The cable end joint assembly comprises at least two insulated conductors (11,12) arranged within a common sheath (10) and has end portions (1,2) stripped for their insulation (11,12) and electrically interconnected (3), as well as an enclosing end cap (6) being sealed to the sheath (10). The cable end joint assembly (60) further comprises at least one sealing element (4), which is provided between the respective conductor insulations (11,12) and the inner wall (26) of the end cap (6).

Abstract: A helically-wound electric cable having at least two groups wound together so as to form a group helix. Each group has at least two twisted-together conductor wires, wherein the pitch of the group helix varying along the helically-wound electric cable in accordance with a sinusoidal function between two limit values having the same sign, characterized in that said sinusoidal function has a determined modulation period (MP) in order to avoid return loss peak (RLp) in the operating frequency range (Fmin-Fmax) of said helically-wound electric cable.

Abstract: The present invention relates to a power and/or telecommunications cable including at least one component element made of a material extruded from an extrudable composition, wherein said extrudable composition comprises a biopolymer selected from polymers of cellulose ester, polymers of starch complexed with a biodegradable polyester, polymers of polyhydroxyalkanoate, and/or polymers of polylactic acid comprising a mixture of polylactic and of polyester.

Abstract: Electric cable having at least one conductor (1) with an insulating layer (2) applied thereto and being twisted around a longitudinal axis of the cable, where the insulated conductor (1, 2) is provided with an enclosing elastomer layer (3) of a material having a hardness being substantially lower than the hardness of the insulating layer (2).

Abstract: An electrical conductor L is specified, which has a central core (1) and at least two layers which are arranged above the core (1) and are composed of electrically conductive individual wires, which are twisted around the core (1) in a first layer (2) and around the first layer (2) in a second layer (4). The individual wires of the first layer (2) are steel wires with an ultimate tensile strength of between 800 N/mm2 and 2000 N/mm2, and the individual wires of the second layer (4) are copper wires with an ultimate tensile strength of between 250 N/mm2 and 400 N/mm2. A wire composed of a soft-annealed copper with an ultimate tensile strength of at least 210 N/mm2 is used as the core (1). The lay length of the copper wires (5) is between 8×D and 18×D where D is the diameter of the conductor L over the second layer.

Abstract: A rack (1) for optical distribution frame includes a plurality of horizontal supports for sockets with connections on a front face (1A) of the rack and means for management of the bundles of optical cables outside each socket. These means for management are made from a plurality of guiding systems (2A to 2E) of the cables, disposed on at least one side wall (1B) of the rack, distributed on the height of the rack and comprising at least one element of reception (C) of cables opened towards outside. The element of reception is in shape of U, the base of the U being fixed to the side wall (1B), and comprises an articulated closing lever (L).

Abstract: Coated conductors have a substrate, a high temperature superconductor layer and at least one or more buffer layers, wherein at least one of the buffer layers is a template for biaxially orienting the high temperature superconductor layer wherein the template is composed of a polycrystalline film consisting of a non-stoichiometric material having the nominal chemical formula A2?xB2+xO7 with B being at least one selected from Zr, Hf, Sn, Pb and Ti; A being at least one selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Y, Tm, Yb and Lu; and x?0; and wherein the substrate is textured.

Abstract: The present invention relates to a resistive type high temperature superconductor based fault current limiter with improved heat exchange capability composed of a thermally conductive matrix material 8 with a plurality of superconductor components 5 embedded in the thermally conductive matrix material 8 wherein the plurality of superconductor components 5 is connected electrically in parallel.

Abstract: The invention relates to a data transmission electric wire comprising a plurality of conductor strands covered in at least one insulating covering including PTFE, the plurality of strands comprising an inner core of first strands covered by at least one outer layer of second strands, said first and second strands being constituted of different metals, the metal of said second conductor strands presenting hardness that is lower than that of the metal of said first conductors, and said first strands being constituted essentially by an alloy of copper and said second strands being constituted essentially of copper. According to the invention, said alloy is a homogeneous copper alloy in the alpha phase that is stable at a temperature less than or equal to 500° C.

Abstract: A foaming composition comprising a melt processible fluoropolymer, and a chemical foaming agent, where the chemical foaming agent is ammonium polyphosphate.

Abstract: A composite control cable has a polymer core and a plurality of strands of electrically conductive material extending in the longitudinal direction of the cable around said core. The polymer is selected from polymers presenting elongation at break that is greater than 7%, and traction strength such that the resultant traction strength of the cable is greater than a predetermined limit value.

Abstract: An electric cable includes an electrical conductor surrounded by a first layer of mica tape made up of mica particles deposited by means of a polymer binder on a backing, a second layer of a polyimide tape, and a third layer of a polytetrafluoroethylene tape, where the first layer is subjected to heat treatment at a temperature of at least 400° C. and the ratio R of the weight per unit length of PTFE over the sum of the weights per unit length of the polymer binder and of the polyimide is such that R is greater than or equal to 2 when the section of the electrical conductor is no greater than 0.2 mm2, R is greater than or equal to 4 when the section of the electrical conductor is strictly greater than 0.2 mm2 and strictly less than 0.6 mm2, R is greater than or equal to 6 when the section of the electrical conductor is equal to 0.6 mm2, and R is greater than or equal to 12 when the section of the electrical conductor is strictly greater than 0.6 mm2.

Abstract: A method is provided for producing a superconductive electrical conductor (7) in which a layer of an yttrium-barium-copper oxide (YBCO) is applied as a superconductive material onto a textured metal base directly or after prior application of a buffer layer, and is subjected to a heat treatment. To this end an interlayer of a metallic material which is compatible with the crystal structure of YBCO, or with the structure of a buffer layer suitable for the application of YBCO, is initially applied all around onto an elongate metal support (1). The support (1) provided with the interlayer is subsequently processed so that predetermined texturing is imparted to the interlayer as a metal base for the layer of YBCO material or for the buffer layer. The layer of superconductive YBCO material is then applied all around, directly onto the textured interlayer or onto the buffer layer previously applied thereon, and the heat treatment is finally carried out.

Abstract: An apparatus for signal and/or current transmission between terminals which can move in relation to one another and which are fitted, on the one hand, on a fixed stator and, on the other hand, on a rotor of a cassette that can rotate about a common axis with the stator. At least one flat ribbon cable, which is equipped with electrical conductors, runs in turns and forms a wound body (W), is arranged within the cassette between the terminals, the ends of the flat ribbon cable being connected to contact parts (19, 20) for the purpose of connecting ongoing cables. In order to accommodate the complete wound body (W) for its protection during transport and/or during storage, a pot-like cover (22) is provided which engages around said wound body and is fitted detachably to an essentially disc-shaped carrier (21).

Abstract: The invention relates to an electrical bushing serving to make a connection at ambient temperature to a superconductor element situated in an enclosure at cryogenic temperature. The electrical bushing passes successively through an enclosure at intermediate temperature between ambient temperature and cryogenic temperature, and an enclosure at ambient temperature, and it comprises a central electrical conductor surrounded by an electrically insulating sheath. According to the invention, an electrically conductive screen connected to ground potential surrounds the insulating sheath over a section that extends from the end of the bushing that is in contact with the enclosure at cryogenic temperature at least as far as the junction between the enclosure at intermediate temperature and the enclosure at ambient temperature. The invention is more particularly applicable to making a connection to a superconductor cable.