Patents Assigned to NKT HV Cables GmbH
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Patent number: 10498126Abstract: A temporary load securing device for armoured high voltage cables includes a ring flange splittable lengthwise, with first and second armour attachment surfaces for welding armour wires to the ring flange, a first tapering reinforcement member splittable lengthwise, mountable around the cable and first armour attachment surface, and arranged to be attached to a first flange surface of the ring flange, thereby extending in a first axial direction away from the first flange surface, a second tapering reinforcement member splittable lengthwise, mountable around the cable and second armour attachment surface, and arranged to be attached to a second flange surface of the ring flange, opposite to the first flange surface, thereby extending in a second axial direction, opposite to the first direction, away from the second flange surface, and a casing splittable lengthwise, and mountable around the first and second tapering reinforcement members and having engagement means for lifting the temporary load securing deviType: GrantFiled: July 3, 2015Date of Patent: December 3, 2019Assignee: NKT HV Cables GmbHInventors: Stefan Hansson, Jonas Behrens
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Patent number: 10483730Abstract: A method of building an insulation system around a naked conductor section of a power cable. The insulation system includes an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer. The method includes: a) placing the naked conductor section in a mold, and b) molding an insulation system around the naked conductor section, wherein the molding of the insulation system involves injecting a first semiconducting compound into a first mold cavity to form an inner semiconducting layer around the naked conductor section, injecting an insulation compound into a second mold cavity to form an insulation layer around the inner semiconducting layer, and injecting a second semiconducting compound into a third mold cavity to form an outer semiconducting layer around the insulation layer.Type: GrantFiled: July 6, 2015Date of Patent: November 19, 2019Assignee: NKT HV Cables GmbHInventors: Dariusz Bednarowski, Emmanuel Logakis, Jörn Antonischki, Julita Krol, Lei Xie, Nikolaus Zant
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Patent number: 10410766Abstract: A power cable including a conductive core including a conductor including a plurality of sections, and an electrical insulation system enclosing the conductor, and a sheath enclosing the conductive core, wherein one of the plurality of sections of the conductor is a first conductor section and another of the plurality of sections of the conductor is a second conductor section, which first conductor section has a first cross-sectional layout that provides a first ampacity for the first conductor section, and which second conductor section has a second cross-sectional layout that provides a second ampacity for the second conductor section, wherein the first ampacity is higher than the second ampacity, wherein the plurality of sections are thermally joined, and wherein the electrical insulation system extends continually from the first conductor section to the second conductor section of the conductor. A method of manufacturing a power cable is also presented.Type: GrantFiled: November 25, 2014Date of Patent: September 10, 2019Assignee: NKT HV Cables GmbHInventors: Flemming Krogh, Peter Friberg
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Patent number: 10404049Abstract: A rigid joint assembly including a first and second cable core end sections of a first and second electric cables, including cores having a conductor, and an insulation system having a semi-conducting layer, an insulation layer and a semi-conducting layer. The assembly includes a joint connection, and a water tight metal casing. The casing assembly has a first and second cable entry parts for receiving the first and second cable cores having joint assembly includes first and second deformation preventing members that surround cable core end sections and includes a rigid pipe.Type: GrantFiled: June 2, 2015Date of Patent: September 3, 2019Assignee: NKT HV Cables GmbHInventors: Armando León-Guarena, Andreas Tyrberg, Henrik Ekholm
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Publication number: 20190190245Abstract: The disclosure relates to a joint, termination or cross-connection arrangement for a cable. The arrangement includes a first cable and a protective casing. The arrangement further includes a transition sleeve. The transition sleeve is welded to the metallic sheath of the first cable. The transition sleeve is furthermore welded to the protective casing. Thereby, a water tight connection between the metallic sheath of the first cable and the protective casing is achieved without the need for used of lead containing materials. The disclosure further relates to a method of providing such an arrangement.Type: ApplicationFiled: May 13, 2016Publication date: June 20, 2019Applicant: NKT HV Cables GmbHInventors: Henrik Ekholm, Johan Jäderberg
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Patent number: 10319488Abstract: A conductor for a power transmission cable including at least two separate lengths of conductors, having at least 99.5% by weight aluminum, and the remainder other metals or substances except a titanium content of at most 0.02% by weight. The at least two lengths of aluminum conductors joined together by a weld. The welding material alloy has an aluminum content of at least 85.2% by weight, a silicon content of from 4.0 to 13.0% by weight and the remainder up to 100% by weight and at most 1.8% by weight, other metals and/or substances; or an aluminum content of at least 99.5% by weight, a titanium content of from 0.10 to 0.50% by weight and the remainder up to 100% by weight, other metals and/or substances.Type: GrantFiled: August 19, 2015Date of Patent: June 11, 2019Assignee: NKT HV Cables GmbHInventors: Johan Hedlund, Igor Lacic
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Patent number: 10250021Abstract: A high-voltage DC cable joint including a multi-wall layered construction having individual concentrically arranged layers. The joint includes, from inside to outside, an inner conductive rubber layer, a field grading rubber layer made from a predetermined tailored formulation, an insulating rubber layer and an outer conductive rubber layer. The field grading rubber layer separates and interconnects the conductive rubber layers, and wherein the rubber layers are cross-linked by a by-product-free manufacturing method. The cable joint is preferably made from platinum cured rubbers by moulding process steps. In a preferred embodiment the cable joint is made by injection moulding.Type: GrantFiled: November 17, 2015Date of Patent: April 2, 2019Assignee: NKT HV Cables GmbHInventors: Patrick Meier, Spiros Tzavalas, Thomas Christen, Alexey Sokolov, Jan Van-Loon, Xavier Kornmann
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Patent number: 10224704Abstract: A welding sleeve for armored cables including a first sleeve part arranged to receive an armored cable, wherein the first sleeve part has a perimeter surface for welding armoring wires of an armored cable thereto, a second sleeve part arranged to receive an armored cable, wherein the second sleeve part has a perimeter surface for welding armoring wires of an armored cable thereto, wherein the first sleeve part is arranged to receive the second sleeve part, the second sleeve part being axially displaceable relative to the first sleeve part, along a common central axis, between an extended position and a retracted position, in which retracted position the first sleeve part receives a greater portion of the second sleeve part than in the extended position, and a rotation preventing arrangement arranged to prevent rotational motion of the first sleeve part relative to the second sleeve part.Type: GrantFiled: February 19, 2016Date of Patent: March 5, 2019Assignee: NKT HV Cables GmbHInventors: Anders Hansson, Andreas Tyrberg, Johan Hedlund
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Patent number: 10193243Abstract: The present disclosure relates to a high voltage power cable joint device including: an elongated conductive connector having a first and second end faces, a field control body having a first semiconducting layer arranged circumferentially around the entire connector, and extending beyond the end faces, wherein the first and second end faces are provided with first and second bore sections which extend parallel with and are arranged offset from the central axis of the connector. The connector has an outer surface that has a first and second outer portions where the connector wall is generally the thinnest towards the first and second bore sections. Furthermore, the connector has a straight first through-opening which extends from the first outer surface portion to the first bore section, wherein a straight second through-opening is axially displaced from the first through-opening and extends from the second outer surface portion to the second bore section.Type: GrantFiled: November 15, 2016Date of Patent: January 29, 2019Assignee: NKT HV Cables GmbHInventors: Markus Saltzer, Fredrik Fälth, Fredrik Axelsson
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Patent number: 10164420Abstract: A fastening device is provided for fastening of a cable termination to a bracket. The fastening device includes a flange for attachment to the cable termination, the flange having a circumferentially extending groove; and one or more attachment members for fastening the fastening device to the bracket, each of the one or more attachment members being arranged such as to be slidable along the circumferentially extending groove. An arrangement including a cable termination and a fastening device is also provided.Type: GrantFiled: August 30, 2016Date of Patent: December 25, 2018Assignee: NKT HV Cables GmbHInventor: Anders Lundblad
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Patent number: 10083778Abstract: A dynamic submarine power cable including a first conductor, a first insulation system layer, a first sheath, and a first screen layer arranged between the first insulation system layer and the first sheath. The first screen layer includes a plurality of first screen wires each having a first diameter and a plurality of first polymer wires each having a second diameter which is larger than the first diameter. The first screen wires and the first polymer wires are arranged in a helical manner around the first insulation system layer. The first screen wires and the first polymer wires are arranged alternatingly along the periphery of the first insulation system layer in any cross section. A radial distance between the central axis of any of the first screen wires and the central axis of the first conductor is less than a radial distance between the central axis of any of the first polymer wires and the central axis of the first conductor.Type: GrantFiled: April 10, 2015Date of Patent: September 25, 2018Assignee: NKT HV Cables GmbHInventors: Andreas Persberg, Andreas Tyrberg
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Patent number: 10063044Abstract: A rigid joint assembly for jointing two cables; the assembly includes outer cable entry parts outside a water-tight casing assembly. A first and second cable insulation system deformation preventing devices are provided, each including a rigid pipe, which surrounds a respective first or second cable core end section, and a bedding material layer, which extends at least partially along a length of an inner surface of the respective rigid pipe. The assembly further includes first and second grooved pipes of elastic material having a plurality of grooves on the side facing the cable, each grooved pipe surrounding the respective first or second cable core end section at a respective inner cable entry part inside the water-tight casing assembly 30.Type: GrantFiled: May 26, 2016Date of Patent: August 28, 2018Assignee: NKT HV Cables GmbHInventors: Håkan Sandell, Andreas Tyrberg, Armando León-Guarena, Henrik Ekholm
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Publication number: 20180138685Abstract: A rigid joint assembly for jointing two cables; the assembly includes outer cable entry parts outside a water-tight casing assembly. A first and second cable insulation system deformation preventing devices are provided, each including a rigid pipe, which surrounds a respective first or second cable core end section, and a bedding material layer, which extends at least partially along a length of an inner surface of the respective rigid pipe. The assembly further includes first and second grooved pipes of elastic material having a plurality of grooves on the side facing the cable, each grooved pipe surrounding the respective first or second cable core end section at a respective inner cable entry part inside the water-tight casing assembly 30.Type: ApplicationFiled: May 26, 2016Publication date: May 17, 2018Applicant: NKT HV Cables GmbHInventors: Håkan Sandell, Andreas Tyrberg, Armando León-Guarena, Henrik Ekholm
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Patent number: 9742137Abstract: A system and method for additively manufacturing splices and terminations for extra high, high, medium and low voltage power cable includes providing an additive manufacturing machine having at least one print head. Cable ends can be secured within a chamber from which atmospheric air can be evacuated and replaced with non-oxidizing gas. A scanning device can determine the composition and position of the various constituents of the cable ends, from which information a controller can determine the printing sequence and print a termination or splice portion.Type: GrantFiled: December 8, 2014Date of Patent: August 22, 2017Assignee: NKT HV Cables GmbHInventor: Robert Wayne Hobson
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Patent number: 9691524Abstract: A laminated cable includes a metal laminate surrounding a cable core having first and second ends. Solder is applied adjacent the ends of the laminate, and is heated and subsequently cooled to form a metal seal. The solder can be melted in a plastic jacketing extruder as the extruder applies a plastic jacket over the metal laminate.Type: GrantFiled: December 8, 2014Date of Patent: June 27, 2017Assignee: NKT HV Cables GmbHInventor: Robert Wayne Hobson