Abstract: The present invention concerns a fire resistant composition particularly for a power and/or telecommunications cable, said composition comprising a polymer and a fire retardant filler. The invention is remarkable in that the polymer is thermoplastic in type and in that the fire retardant filler comprises cork.

Abstract: A resistive current limiter with at least one tubular high temperature superconductor body is disclosed provided with a shunt of a normal conducting material wound in coil configuration around the surface of the tubular superconductor body.

Abstract: The present invention relates to a cable 1 comprising two or more insulated conductors 2s grouped together in a common sheath 3, each insulated conductor 2 comprising a conductive member 4 inside an insulative member 5. The invention is noteworthy in that each insulated conductor 2 is covered with a skin 6 that is attached to the insulative member 5 and is non-stick with reference to the sheath 3.

Abstract: A high temperature superconductor material of BSCCO-family is provided wherein parts of Sr of the superconducting phases is substituted by Ba.

Abstract: A multi-tube optical fiber cable includes a plurality of optical fiber tubes, each having one or more optical fibers loosely arranged therein. The optical fiber tubes are arranged within an outer jacket, where the tubes are constructed of a polymer having a low Young's constant modulus. A binder is arranged around the plurality of optical fiber tubes, where the binder is substantially flat in shape such that there is no deformation of the tube, when the binder is applied.

Abstract: A wire has a conductor and an insulation extruded onto the conductor. The insulation has a plurality of alternating crests and crevasses, where the ratio of the distance from the conductor to a top of the crest to the distance from the conductor to a lowest point in the adjacent crevasse is at least 1.1 and where the ratio is sustained within a tolerance variation of not more than 15% along the length of the wire.

Abstract: An optical fiber cable having a plurality of optical fibers, at least one tube surrounding the optical fibers and a plurality of strength members positioned around the tube. A jacket surrounds the tube and the strength members, where the ratio of polymer used to form the tube and the jacket is at ratio of substantially 10:1 versus the strength members in terms of cross sectional area at any point along the cable and where the Young's modulus of the at least one tube and the jacket is substantially in the range of 250-750 N/mm2.

Abstract: A cable having a plurality of unshielded twisted pairs, each of which has a different lay length. A jacket encloses the plurality of unshielded twisted pairs, where the unshielded twisted pair with the longest lay length among the plurality of unshielded twisted pairs is positioned within the center of the jacket, substantially along the central longitudinal axis of the cable.

Abstract: An electrical cable with a section diameter at most equal to 2 mm includes a plurality of strands extending in the longitudinal direction of the cable. The strands are twisted to form a stranded conductor. Only certain strands of the stranded conductor are of electrically conductive material, for example copper, the remaining strands are of non-conductive material, such as polyamide, high strength polyester or a polyetherimide.

Abstract: A termination for connecting one end of a superconductive cable (10), wherein the end of the superconductor is made up of at least one resistively-conductive central support (12) of substantially cylindrical shape and disposed around the support, and wherein an insulating sheath (18) surrounds the superconductor. The end of the cable is stripped in order to reveal the central support (12) and the superconductor (14,16), and the termination has a metal sleeve (30) made up of two portions adjacent in succession, wherein a first portion (32) is engaged around the stripped portion of the central support, and a second portion (34) is soldered around the stripped portion of the superconductor.

Abstract: A cold-shrinkable element for joining or terminating electric cables, the element comprising a set of insulating or conductive layers, an outer protective sleeve, and a support element enabling said set of layers to be maintained in a radially-expanded state, the support element being suitable for being withdrawn from said assembly so as to allow the layers to shrink onto the cable or cables. According to the invention, the element comprises a metallized sheet disposed between said set of layers and said protective sleeve, together with a moisture-absorbing swelling layer disposed between said set of layers and said metallized sheet.

Abstract: Apparatus for manufacturing a helically-wound electric cable having a winder means for winding two groups, each group having two twisted-together conductor wires, in such a manner as to form a group helix. A means is provided for varying the pitch of the group helix, having two accumulators located respectively upstream and downstream from the winder means, each accumulator having a moving drum enabling a varying length of a central line to be retained. A control means controls the position of each moving drum, where the groups are wound together at a speed that varies between two limit speeds having the same sign and where the winding is in such a manner that the pitch of the group helix varies along the cable between two limit values having the same sign.

Abstract: A description is given of a flexible electric control cable in which one or more layers of control wires are stranded on a central element and the at least one layer of control wires is surrounded by an outer jacket, the central element (1) comprising at least one pair of wires (1a, 1b) and each wire (1a, 1b) of the pair of wires comprising a core element (10) of a tension-resistant plastic, a layer of metal wires (11) stranded on the core element (10) and a layer (12) of a compressible insulating material sheathing the stranded layer, and the wires (1a, 1b) of the pair of wires being stranded with one another with a length of lay of 20 to 40 D, where D is the diameter of the pair of wires.

Abstract: An improved electrical line comprising an electrical conductor (5) and a layer of thermoplastic material wherein the layer consists of at least one inner layer (6) and one outer layer (7) and the outer layer (7) comprises a lubricant which has migrated from the inner layer (6) into the outer layer (7).

Abstract: The invention relates to an electric wire comprising an aluminum or aluminum alloy core provided with a coating layer of zinc and nickel alloys. According to the invention, the content by weight of nickel in the alloy lies in the range 5% to 15%.

Abstract: An electrical signal cable having, at least two insulated conductors, wherein each of the insulated conductors is arranged in a groove (2) of a longitudinal central element (1) made of an elastic material which allows the insulated conductors to move in radial direction when the electrical signal cable is exposed to longitudinal tensile stress.

Abstract: An electrical bushing (1) for connecting a superconducting device (2) to a device located at room temperature has an electrical conductor (9) and an insulating layer (10) surrounding the conductor (9). The conductor (9) has a plurality of tubular sections (9a, 9b, 9c), which are made from an electrically conductive material and are electrically connected to one another at their ends, and the tubular sections (9a, 9b, 9c) having an identical outer diameter D and inner diameters d which are different from one another.

Abstract: A double-wall tank for storing and shipping cryogenic media, which consists of an inner tank that contains the medium, an outer casing spaced some distance from the inner tank, and an evacuated space located between the inner tank and the outer casing, such that at least one permanent magnet is installed in the evacuated space and is arranged opposite a high-temperature superconductor, so that the inner tank is supported in the casing without contact, has the following features: the high-temperature superconductor (8) is located in the evacuated space (5), both the inner tank (1) and the casing (2) have a neck (3, 4), and the necks (3, 4) are arranged concentrically to each other, the neck (3) of the inner tank (1) is a spirally corrugated metal tube (3), whose outer end is attached to the neck (4) of the casing (2).

Abstract: The invention relates to a synthetic material end for a DC electric cable. In the invention, the synthetic material end includes a composite insert that is placed between the inner insulator and the outer insulating sleeve of the cable, the insert generally being in the form of a sheath surrounding the inner insulator over a partially-stripped portion of the cable, and being made up of a resistive portion of high resistivity, and of a semi-conductive portion of lower resistivity, the interface between said resistive and semi-conductive portions forming a deflector, the end of the resistive portion that is remote from the deflector being electrically connected to the central conductor of the cable, and the end of the semi-conductive portion that is remote from the deflector being electrically connected to the outer semi-conductor of the cable. Application to making connections to high-voltage electric cables.

Abstract: An apparatus for signal transmission between terminals (6, 8), between which at least one cable (10) is arranged, which is accommodated in an essentially circular cassette (K), to which ongoing cables can be connected at the terminals, and whose length is greater than the distance between the terminals. The cassette (K) comprises a rotor (R), which can rotate about its axis and bears at least one terminal, and a stationary stator (S), which likewise bears at least one terminal. The rotor (R) has a cylindrical hub (17), which runs in the axial direction of the cassette (K) and on which means are provided for fitting an intermediate base (16), which runs parallel to the cover face (18) and the base (19) of the accommodating area (15), is arranged at a distance from them, and divides the accommodating area (15) in a variable manner according to the height or width of the cable (10) to be inserted into the cassette into a smaller area (V) for the cable (10) and an empty area (L).