Abstract: A method of building a joint insulation of a power cable joint including a conductor joint connecting a first conductor of a first cable length to a second conductor of second cable length, the method including: a) winding a first electrically insulating tape around an inner semiconducting layer that covers the conductor joint so that the first electrically insulating tape connects a first cable length insulation layer of the first cable length to a second cable length insulation layer of the second cable length, to form an inner insulation layer of the joint insulation, and b) winding a second electrically insulating tape around the inner insulation layer, so that the second electrically insulating tape connects the first cable length insulation layer to the second cable length insulation layer, to form an outer insulation layer of the joint insulation, wherein the first electrically insulating tape has a higher peroxide content than the second electrically insulating tape, and c) crosslinking the joint insu

Abstract: An emergency break cable lug device is described. The cable lug device includes a pin element for fixing a cable; and a socket element, in which the pin element is insertable and which is configured to be connected to an external conductor, in particular an external cable or wire. The pin element is adapted to exit the socket element upon a predefined threshold value of force acting on the pin element and/or the socket element. Further, a pin element for a cable lug device, a socket element for a cable lug device and a method for mounting a cable lug device are described.

Abstract: A power cable accessory assembly including: a first power cable including: first conductor, and a first electrical insulation layer arranged around the first conductor, wherein the first electrical insulation layer includes a first insulation groove extending circumferentially along an outer surface of the first electrical insulation layer, a connection sleeve including: a first axial end opening receiving an end portion of the first conductor protruding axially from the first electrical insulation layer, and a first locking sleeve groove extending circumferentially along an outer surface of the connection sleeve; and a first locking sleeve including: a first radially inwards extending flange engaging with the first insulation groove and a second radially inwards extending flange engaging with the first locking sleeve groove to restrict axial movement between the first electrical insulation layer and the connection sleeve, wherein the first radially inwards extending flange has a first radial dimension that d

Abstract: A fiber-optic splice having a first fiber-optic cable including a first metal tube, the first metal tube including a first metal material, a splice tube including a second metal material, wherein the splice tube is arranged around the first metal tube, or wherein the first metal tube is arranged around the splice tube, thereby forming a first overlap section between the splice tube and the first metal tube, and a first coating including a third metal material, the third metal material being different from the first metal material and the second metal material, the first coating being arranged at an inner surface of the splice tube or at an outer surface of the splice tube in the first overlap section, and wherein the inner surface of the splice tube or the inner surface of the first metal tube includes a first radial deformation providing contact between the splice tube and the first metal tube via the first coating in the overlap section, so that a hydrogen tight seal is achieved between the first metal tube

Abstract: A backfilling protection structure for underground installation of a power cable joint, including: a lower casing part forming a base of the backfilling protection structure and configured to be laid on soil, an upper casing part configured to be arranged on top of the lower casing part, wherein the lower casing part and the upper casing part are configured to be attached to each other to form an elongated body, wherein the body defines a channel for receiving a power cable joint, wherein the channel extends through the backfilling protection structure from a first end opening at a first axial end of the backfilling protection structure to a second end opening at a second end of the backfilling protection structure opposite to the first end, wherein the upper casing part is provided with a plurality of top openings distributed along the length of the body and extending into the channel, and a plurality of grids covering a respective top opening, each grid being configured to filter out solid objects larger th

Abstract: A multi-phase submarine power cable including: a plurality of power cores arranged in a stranded configuration, and a curvature sensor including: an elastic elongated member, and a plurality of Fibre Bragg Grating, FBG, fibres, each FBG fibre extending axially along the elongated member at a radial distance from the centre of the elongated member; wherein the elongated member extends between the stranded power cores along a central axis of the multi-phase submarine power cable.

Abstract: A method for improving the properties of a joint between two cable ends having obtaining two cable ends, having uncovered conductors being joined in a connection zone, each cable end also including an uncovered insulation zone including uncovered insulation formed as a cone adjacent the uncovered conductor, covering the conductors with an additional insulation layer, measuring the additional insulation layer and the cones, determining the geometry of the cones and the additional insulation layer based on the measurements, determining a deviation of the geometry from a desired geometry of the cones and the additional insulation layer, where the desired geometry includes a smooth transition between two zones, determining, based on the deviation determination, material to be removed from the cones and the additional insulation layer achieving the desired geometry, and removing the material from the cones and the additional insulation layer.

Abstract: A power cable termination system including: a power cable having a power cable conductor and a power cable insulation system configured to electrically insulate the power cable conductor, a termination cable having a termination cable conductor and a termination cable insulation system configured to electrically insulate the termination cable insulation system, wherein the termination cable is at least one order of magnitude shorter than the power cable, wherein the termination cable conductor has an electrical resistance which is lower than the electrical resistance of the power cable conductor and/or the termination cable insulation system has a higher insulation resistance per unit length than the power cable insulation system, a joint configured to join the power cable and the termination cable, and a cable termination device configured to terminate the termination cable.

Abstract: A power cable measurement system for facilitating measurements of a power cable terminated at an electrical substation and connected to an overhead busbar, including: a first movable structure provided with a first busbar connector, and a measurement equipment connector device configured to be electrically connected to the first busbar connector and to measurement equipment, wherein the first movable structure is configured to be maneuvered between a default lowered position in which the first busbar connector is disconnected from the overhead busbar, and a temporary elevated position in which the first busbar connector is set in electrical connection with the overhead busbar to provide an electrical connection between the overhead busbar and the measurement equipment connector device.

Abstract: A high voltage DC power cable designed for voltages of 320 kV or higher, including: a multi-wire conductor, an inner semiconducting layer arranged around the multi-wire conductor, the inner semiconducting layer forming a screen layer for the multi-wire conductor, a solid insulation system arranged around the inner semiconducting layer, and a water-blocking compound configured to restrict water migration into the high voltage DC power cable.

Abstract: A method for fatigue-monitoring of a submarine cable during off-shore jointing or reparation includes: a) determining a plurality of curvature values concerning a curvature of the submarine cable at different points in time during the off-shore jointing or reparation, b) determining a plurality of strain ranges of the submarine cable based on the plurality of curvature values, and c) determining a fatigue damage of the submarine cable based on the plurality of strain ranges.

Abstract: A submarine power cable having: a power core including a conductor, wherein the conductor has a conductor joint in a joint region of the power core, a main armor layer including a plurality of main armor wires arranged around the power core and extending in the axial direction of the power core, and a joint reinforcement armor layer including a plurality of joint reinforcement armor wires axially locked relative to the main armor wires, wherein the joint reinforcement armor layer is provided only in the joint region and arranged layered with the main armor layer, the joint reinforcement armor layer and the main armor layer thereby forming a dual-layer armor only in the joint region.

Abstract: A joint, termination or cross-connection arrangement for a cable includes a first cable and a protective casing. The arrangement further includes a transition sleeve. The transition sleeve, at a first longitudinal end surface thereof, is welded to the metallic sheath of the first cable around the whole circumference of the metallic sheath. The transition sleeve is furthermore welded to the protective casing around the whole circumference of the transition sleeve. A method of providing such an arrangement includes: welding the transition sleeve, at the first longitudinal end surface, to the metallic sheath of the first cable around the whole circumference of the metallic sheath; and welding the transition sleeve to a first tubular end portion of the protective casing around the whole circumference of the transition sleeve.

Abstract: A method for improving the properties of a joint between two cable ends having obtaining two cable ends, having uncovered conductors being joined in a connection zone, each cable end also including an uncovered insulation zone including uncovered insulation formed as a cone adjacent the uncovered conductor, covering the conductors with an additional insulation layer, measuring the additional insulation layer and the cones, determining the geometry of the cones and the additional insulation layer based on the measurements, determining a deviation of the geometry from a desired geometry of the cones and the additional insulation layer, where the desired geometry includes a smooth transition between two zones, determining, based on the deviation determination, material to be removed from the cones and the additional insulation layer achieving the desired geometry, and removing the material from the cones and the additional insulation layer.

Abstract: A pull-in head for a high voltage cable provided with a multi-wire conductor having an end portion which is stepped and tapering, with a layer-by-layer exposure of the wires in the direction towards the end face of the multi-wire conductor, wherein the pull-in head includes: a conductor clamp assembly having a plurality of clamping segments, wherein each clamping segment has an axial first central channel configured to receive the multi-wire conductor, wherein at least some of the clamping segments have mutually differing central channel width and central channel depth dimensions, the clamping segments being configured to be arranged one after the other in an order with a decreasing central channel width and central channel depth dimension, the central channel width and central channel depth dimensions being adapted to the tapering stepped configuration of the multi-wire conductor, whereby the first central channels together form a multi-wire conductor channel which is tapering in an axial direction, and wher

Abstract: A power cable system including a power cable, and an evaporator pipe assembly extending along the power cable, wherein the evaporator pipe assembly having an inner liquid pipe including a pressurised liquid refrigerant, and an outer gas pipe arranged outside of and coaxially with the inner liquid pipe, wherein the inner liquid pipe is provided with a plurality of openings distributed along its length, and wherein the openings provide fluid communication between the inner liquid pipe and the outer gas pipe, allowing part of the pressurised liquid refrigerant to escape from the inner liquid pipe to the outer gas pipe and evaporate in the outer gas pipe, thereby cooling the power cable.

Abstract: A method in the manufacturing of an insulated electric high voltage DC termination or joint includes providing an insulated electric high voltage DC cable including a high voltage DC conductor, a polymer based insulation system surrounding the high voltage DC conductor, the polymer based insulation system including an insulation layer and a semiconducting layer surrounding the insulation layer, and a grounding layer surrounding the semiconducting layer; removing the grounding layer and the semiconducting layer in at least one end portion of the high voltage DC cable, mounting a field grading adapter or joint body in the at least one end portion of the high voltage DC cable; and subjecting the insulation layer of the polymer based insulation system in the at least one end portion of the high voltage DC cable for a heat treatment procedure, while being covered by the mounted field grading adapter or joint body.

Abstract: A process for producing a flexible vulcanized joint between two electric power cables includes the steps of: producing an exposed conductor joint between each end of the two cable ends to be joined; producing an inner semi-conducting layer thereby radially surrounding and covering the exposed conductor joint; winding an insulation tape including an organic peroxide around the inner semi-conducting layer thereby radially surrounding and covering the inner semi-conducting layer; curing the insulation tape to produce an insulation layer; and producing an outer semi-conducting layer thereby radially surrounding and covering the insulation layer. The step of winding the insulation tape around the inner semi-conductor layer is performed under an oxygen-free atmosphere. The present invention also provides a flexible vulcanized joint produced by this process, and an electric power cable including such a joint.

Abstract: An electric power cable and a process for the production of the cable including a metal conductor and an electric insulation system surrounding the conductor coaxially and radially outwards of the conductor having improved electric properties. The insulation system includes an inner semi-conducting layer surrounded radially outwards by an insulation layer and wherein the insulation layer is surrounded radially outwards by an outer semi-conducting layer. The electric power cable further includes an inner water blocking material arranged in the conductor and/or to surround the conductor radially outwards and an outer water blocking material arranged radially outwards from the insulation system. An inner barrier layer is arranged as a diffusion hindering layer between the inner water blocking material and the insulation system and an outer barrier layer is arranged as a diffusion hindering layer between the insulation system and the outer water blocking material.

Abstract: A power cable termination device for a high voltage direct current gas-insulated switchgear including: an outer housing made of an electrically conducting material, connectable to the switchgear; a terminal portion of a power cable, the power cable including an electrical conductor, a circumferential electrically insulating layer, and a circumferential conductive shield which is stripped off along a first part of the power cable; an electric field grading system including a resistive field grading material layer arranged circumferentially around the power cable to axially cover the edge of the conductive shield where the conductive shield is terminated, the resistive field grading material layer being in electrical contact therewith, and a connection device connectable to the gas-insulated switchgear and arranged to provide mechanical support and electrical contact with the gas-insulated switchgear.