Abstract: A high-voltage cable sealing end (100) has a primary volume (102) and a secondary volume (104) fluidically connected thereto, which are filled with an insulating fluid. The primary volume (102) and the secondary volume (104) are sealed with respect to the atmosphere surrounding the high-voltage cable sealing end (100). The secondary volume (104) can be disconnected from the primary volume (102) via a separable connection (106) which can be cut off in a fluid-tight manner. A drying agent, which draws moisture out of the insulating fluid, is introduced into the secondary volume (104).

Abstract: A high-voltage cable sealing end (100) has a primary volume (102) and a secondary volume (104) fluidically connected thereto, which are filled with an insulating fluid. The primary volume (102) and the secondary volume (104) are sealed with respect to the atmosphere surrounding the high-voltage cable sealing end (100). The secondary volume (104) can be disconnected from the primary volume (102) via a separable connection (106) which can be cut off in a fluid-tight manner. A drying agent, which draws moisture out of the insulating fluid, is introduced into the secondary volume (104).

Abstract: This power cable junction (10) has an end part of a power cable which has an electrically insulating material (122). The junction (10) has a predetermined region containing a module for measuring the space charge of the insulating material (122).

Abstract: This power cable junction (10) has an end part of a power cable which has an electrically insulating material (122). The junction (10) has a predetermined region containing a module for measuring the space charge of the insulating material (122).

Abstract: The invention relates to a high-voltage dry apparatus having a semiconductor layer (2) covered by a metal screen (3), this screen (3) being eliminated so as to expose this semiconductor layer (2) over a length, this cable being connected to an element of equipment having an outer envelope (6) mechanically connected to said screen. According to the invention, an electronic monitoring arrangement (20) is contained within said envelope (6), this electronic arrangement (20) being electrically connected to an electrical power supply arrangement (21) surrounding said semiconductor layer (2) and to the metal screen (3) of said cable on either side of said length of the exposed semiconductor layer.

Abstract: An electricity transmission cable with mass-impregnated paper insulation has around at least one conductor (1), an impregnated paper layer (2) and a metal layer (3) adjacent to the impregnated paper layer, this metal layer (3) consisting of copper or aluminum. The cable has, directly around said metal layer (3), an insulating material layer (4) and, directly around the insulating material layer (4), a transverse reinforcement layer (5) made of steel or made of glass fiber tape.

Abstract: In an arrangement for connecting a high-voltage or very-high-voltage power cable comprising an insulative external jacket to an equipment element comprising an external surface by means of an insulative layer, the insulative layer consists of a composite material resistant to traction in the longitudinal direction of the cable and attached to said external jacket and to the external surface.

Abstract: The present invention relates to a device comprising at least one electrical cable (10a, 10b, and 10c) for transporting DC current, said electrical cable comprising an elongate electrical conductor (11a, 11b, and 11c) surrounded by at least one first semiconducting layer (12c), an electrically insulating layer (13a, 13b and 13c) surrounding the first semiconducting layer and a second semiconducting layer (14a, 14b and 14c) surrounding the electrically insulating layer, characterized in that the electrical cable (10a, 10b, and 10c) furthermore comprises a space charge trapping layer (15a, 15b, and 15c) obtained on the basis of a polymeric composition comprising at least one organic polymer and at least one linear filler, the space charge trapping layer (15a, 15b, and 15c) replacing at least in part the second semiconducting layer (14a, 14b, and 14c) of the electrical cable, so that the space charge trapping layer is in physical contact with the electrically insulating layer (13a, 13b, and 13c) of the electrica

Abstract: The invention relates to an electricity transmission cable with mass-impregnated paper insulation comprising around at least one conductor (1), an impregnated paper layer (2) and a metal layer (3) adjacent to said impregnated paper layer, this metal layer (3) consisting of copper or aluminium. According to the invention, the cable comprises, directly around said metal layer (3), an insulating material layer (4) and, directly around said insulating material layer (4), a transverse reinforcement layer (5) made of steel or made of glass fibre tape.

Abstract: The invention relates to a process for assembling an electric transmission cable to an accessory by threading of the cable, the outer surface of which is constituted of the outer surface of its insulating layer surrounding a conductor, into a bore of the accessory, with the aid of a slip agent comprising silicone oil. According to the invention, said slip agent also comprises a polar aprotic solvent forming an interface fluid between said electric transmission cable and said accessory.

Abstract: The invention relates to a high-voltage dry apparatus having a semiconductor layer (2) covered by a metal screen (3), this screen (3) being eliminated so as to expose this semiconductor layer (2) over a length, this cable being connected to an element of equipment having an outer envelope (6) mechanically connected to said screen. According to the invention, an electronic monitoring arrangement (20) is contained within said envelope (6), this electronic arrangement (20) being electrically connected to an electrical power supply arrangement (21) surrounding said semiconductor layer (2) and to the metal screen (3) of said cable on either side of said length of the exposed semiconductor layer.

Abstract: The present invention relates to a device comprising at least one electrical cable (10a, 10b, and 10c) for transporting DC current, said electrical cable comprising an elongate electrical conductor (11a, 11b, and 11c) surrounded by at least one first semiconducting layer (12c), an electrically insulating layer (13a, 13b and 13c) surrounding the first semiconducting layer and a second semiconducting layer (14a, 14b and 14c) surrounding the electrically insulating layer, characterized in that the electrical cable (10a, 10b, and 10c) furthermore comprises a space charge trapping layer (15a, 15b, and 15c) obtained on the basis of a polymeric composition comprising at least one organic polymer and at least one linear filler, the space charge trapping layer (15a, 15b, and 15c) replacing at least in part the second semiconducting layer (14a, 14b, and 14c) of the electrical cable, so that the space charge trapping layer is in physical contact with the electrically insulating layer (13a, 13b, and 13c) of the electrica

Abstract: The present invention relates to an electric cable comprising a conductor element, an electrically insulating layer surrounding said conductor element, said electrically insulating layer being obtained from a mixture comprising polyethylene and a styrene copolymer, wherein the polyethylene is a plurimodal polyethylene.

Abstract: A termination for extra high voltage includes, around a central conductor (1), a deflector cone (2) made of flexible material covered by a polymer insulator having a first internal insulating element (3) and containing a conducting deflector (5), the conductor (1) is connected to an output terminal (6). The maximum diameter (D) of the first insulating element (3) at right angles to the length (L) of the deflector cone (2) included between the conducting deflector (5) and the adjacent end of the output terminal (6) is greater than or equal to double the maximum diameter (d1) of the conducting deflector (5).

Abstract: An electrical bushing structure includes a central conductor (19) designed to have one (26) of its two ends connected to a superconductor element situated in an enclosure (11) at cryogenic temperature, and its other end (25) connected to an article at ambient temperature. An electrically insulating sheath (20) surrounds the conductor over substantially the entire length of the conductor. A metal tube (24) surrounds the conductor over substantially its entire length and is interposed between the insulating sheath (20) and the conductor (19), the tube being mechanically fastened to the conductor close to one of the ends (25, 26) of the conductor, referred to as its first end, and not being mechanically fastened to the conductor close to the other one of the ends of the conductor, referred to as its second end. A space between the conductor and the tube containing a gas. The tube is in electrical contact with said second end of the conductor.

Abstract: A termination for extra high voltage includes, around a central conductor (1), a deflector cone (2) made of flexible material covered by a polymer insulator having a first internal insulating element (3) and containing a conducting deflector (5), the conductor (1) is connected to an output terminal (6). The maximum diameter (D) of the first insulating element (3) at right angles to the length (L) of the deflector cone (2) included between the conducting deflector (5) and the adjacent end of the output terminal (6) is greater than or equal to double the maximum diameter (d1) of the conducting deflector (5).

Abstract: An electrical bushing (1) for connecting a superconducting device to a device located at ambient temperature, the bushing (1) having an electrical conductor (9) and an insulating layer (10) surrounding the electrical conductor (9). An interlayer (15) is provided between the electrical conductor (9) and the insulating layer (10) and makes it possible for the electrical conductor (9) to slide in the insulating layer (10) within a temperature range of from 70 kelvin to the ambient temperature. A field control layer (11) is also applied to the insulating layer (10).

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.

Abstract: An electrical bushing structure includes a central conductor (19) designed to have one (26) of its two ends connected to a superconductor element situated in an enclosure (11) at cryogenic temperature, and its other end (25) connected to an article at ambient temperature. An electrically insulating sheath (20) surrounds the conductor over substantially the entire length of the conductor. A metal tube (24) surrounds the conductor over substantially its entire length and is interposed between the insulating sheath (20) and the conductor (19), the tube being mechanically fastened to the conductor close to one of the ends (25, 26) of the conductor, referred to as its first end, and not being mechanically fastened to the conductor close to the other one of the ends of the conductor, referred to as its second end. A space between the conductor and the tube containing a gas. The tube is in electrical contact with said second end of the conductor.

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.