Abstract: The present invention provides a capacitive voltage transformer, including: a capacitive voltage-dividing component and an electromagnetic unit. The capacitive voltage-dividing component comprises: one or more levels of stacks, and each stack is a coupling capacitor. The coupling capacitor includes: an upper cover plate, a lower cover plate, an insulating sleeve, a capacitor core, squirrel cage electrodes, volume matching devices, a high voltage lead, and a low voltage lead. The lowermost coupling capacitor is provided with a medium voltage lead and a lead terminal. The low voltage lead of the lowermost coupling capacitor is led out through a low-voltage leading-out tube arranged in the lead terminal, and the medium voltage lead of the lowermost coupling capacitor is led out through a medium-voltage leading-out post arranged in the lead terminal. The medium-voltage leading-out post passes through and out of the low-voltage leading-out tube and is arranged coaxially with the low-voltage leading-out tube.

Abstract: A method for creating a flexible transition joint between HVDC-MI cables having different diameters. The central wires of the conductors are thermally joined by a conical connection piece. The strands of the layers of stranded wires surrounding the central wires are rewound, cut and thermally joined along their respective lay lengths. The stranded are sanded/ground along the lay length of the strands to form a smooth uniform transition having the same slope as the conical connection piece. A paper lapping machine is used to form an insulation patch over the transition joint.

Abstract: The present disclosure relates to a power cable joint system capable of minimizing expansion, deformation or damage of a metal sheath restoration layer, which is formed of a material such as lead sheath, due to internal expansion due to heat generated in an intermediate connection part of the power cable joint system.

Abstract: A field grading member includes an insulating body extending along a regulation axis and a conductive body. The conductive body is encapsulated within the insulating body and defines a conductive network therein to regulate an electric field within an underlying insulator from current flowing through a conductor along the regulation axis. Cables and methods of regulating electric field within cables are also described.

Abstract: The present invention relates to an electrical harness (1) comprising at least one first cable strand (2) and at least one second cable strand (3, 4), which are respectively at least partially surrounded externally by a first shielding braid (13) and a second shielding braid (14, 15), and a connecting socket (16) externally surrounding one end of the first cable strand (17) and one end of the second cable strand (18, 19), characterised in that the connecting socket (16) comprises a fixing part (21) intended to be engaged on a fixing member of the turbomachine, and a crimping part (20), the ends (26, 27, 28) of the first (13) and second (14, 15) shielding braids being engaged externally to the crimping part (20), at least one crimping member (32) holding said ends (26, 27, 40) on the crimping part (20).

Abstract: A cable fitting for cables that can be used for high-voltage direct-current (HVDC) energy transmission, the cable fitting having an electrically insulating layer. A process for the production of an electrically insulating layer of such a cable fitting, and also the use thereof.

Abstract: A joint for high voltage direct current cables extending along a longitudinal axis between two opposite end portions, the joint including: —a central semiconducting electrode; —two semiconducting deflectors; —a field grading layer longitudinally extending between each one of the deflectors and the central electrode and in electric contact therewith; —a joint insulating layer surrounding the central electrode, the two deflectors and the field grading layer; and —a joint outer semiconductive layer surrounding and in direct contact with the insulating layer.

Abstract: A plug-in connector for a high-current application in accordance with the present disclosure comprises an electrically conductive plug-in contact element and an electrically insulating housing. The housing is formed with at least one through-opening forming a plug-in contact element holder for receiving the plug-in contact element. The plug-in contact element holder surrounds the plug-in contact element at least in regions. A seal is provided in the region in which the plug-in contact element holder surrounds the plug-in contact element so that the seal seals the plug-in contact element holder to the plug-in contact element. The plug-in contact element has a crimp section for establishing an electrical and mechanical connection to a cable, wherein the plug-in contact element is formed from a crimp element and a plug-in element, which are connected to one another by means of a press fit.

Abstract: A tubular cable interconnect unit arranged on an outer periphery of a joint of a power cable, includes a tubular insulating tube, a non-ohmic resistor layer formed from a non-ohmic composition and provided on an inner peripheral surface of the insulating tube, and an inner semiconductive layer provided on the non-ohmic resistor layer, wherein the non-ohmic composition includes a base polymer including at least one of thermoplastic and rubber, and varistor grains having a non-ohmic characteristic in which a volume resistivity varies non-linearly with respect to an applied voltage, and the varistor grains have a maximum grain diameter of 30 ?m or less.

Abstract: A voltage sensor comprises a conductor (102) having a first end (101) and a second end (103), the first end including a first connection interface (150) and the second end having no connection, and a sensor section (125) including at least one sensor disposed over the conductor, the sensor sensing the sensor sensing at least a voltage or a sample of the voltage of the conductor. The voltage sensor is coupleable to a power line or cable, such as an overhead power line or cable, or a cable accessory, and can also be used in underground applications.

Abstract: A splice assembly for engaging a conductor includes a brush configured to engage the conductor. The brush includes a housing having a first portion and a second portion. The housing defines a housing axis extending between the first portion and the second portion. The first portion defines a cavity having an open end. The second portion defines a bore. A diameter of the cavity is larger than a diameter of the bore. The cavity and the bore are configured to receive the conductor therethrough. The brush further includes a brush member secured within the cavity and positioned proximate the open end.

Abstract: A measuring device for measuring flow and/or composition of a measured medium in a pipe or tube by registering an ultrasonic measurement signal includes a measurement transmitter and a connection adapter for mechanical securement of the measurement transmitter on the pipe or tube, in which the connection adapter has a longitudinal axis and the measuring device includes a measuring transducer element and at least one metal hose, wherein at least one signal transmission cable is arranged in the metal hose for signal transmission between the measurement transmitter and a sensor element, and wherein the metal hose mechanically connects the measuring transducer element with the connection adapter.

Abstract: A cold shrinkable terminal comprises a terminal body fixed to a cable joint disposed at an end of the cable and a composite void filling mastic. The cable joint includes a conductor core, an inner insulation layer disposed on the conductor core, and a conductive shielding layer disposed on the inner insulation layer. The composite void filling mastic covers an incision of the conductive shielding layer and includes a filling layer in contact with the cable joint and a separating layer disposed between the filling layer and the terminal body. The separating layer is made of a material different than the terminal body.

Abstract: A stress cone for reducing electrical stresses is disclosed for use on terminated ends of tubing encapsulated power cable used in surface applications in a subsurface well power system employing electric submersible pumps (ESPs). The stress cone comprises an annular section about a longitudinal axis for receiving a terminated end of the TEPC in its first end and for abutting the terminated metal TEPC end against a metal shoulder at its second end therein, and an insulation chamber axially aligned with and connected to the annular section. The chamber comprises a metal interior surface symmetrical about the axis. The insulated TEPC core (without outer metal sheath) passes through the insulation chamber along the axis and then exits. The ID of the TEPC metal sheath and the inside metal surface of the chamber form a smooth ground plane transition surface. Insulation material surrounds the TEPC insulation layer within the insulation chamber.

Abstract: 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.

Abstract: A gas resistant pothead system and method for electric submersible motors. A gas resistant pothead system includes a lead foil wrapped motor lead cable (MLE) extending through a pothead, a sleeve of an insulator block inside the pothead, the sleeve including gold plating and lead-foil wrapping over the gold plating, and a lead-to-gold seal formed between the gold plating of the sleeve and the lead foil wrapping over the gold plating. A method of creating a seal to gas around a power cable connection to a downhole electric submersible motor includes wrapping lead foil around a MLE extending through a pothead, continuing the lead foil wrapping around a gold-plated sleeve of an insulating block inside the pothead, mechanically reinforcing the lead foil with an encapsulant, and bonding the lead foil to the gold plating of the insulating block.

Abstract: Electrical connectors having field shaping rings are disclosed. A disclosed example apparatus includes a body of a connector, where the body has a longitudinal axis, an electrical conductor extending substantially parallel to the longitudinal axis and within the body, and an annular electrode embedded within the body.

Abstract: A sensored electrical jumper comprises a conductor having a first end and a second end, the first end including a first connection interface and the second end including a second connection interface, a sensor section including at least one sensor disposed over the conductor between the first and second ends, the sensor section sensing at least one of current and voltage of the conductor, and a sensor output conduit extending from the sensor and oriented substantially perpendicular to the conductor axis to protect at least one sensor output wire from leakage current or other potential electrical damage.

Abstract: A cold shrinkable termination for an electric power cable that includes an insulation tube and stress control glue. When the cold shrinkable termination is mounted on the electric power cable, the stress control glue fills a gap between the electric power cable and the insulation tube so as to prevent local electric field concentration from occurring at an exposed end of the electric power cable. The stress control glue has a dielectric constant within a range of 5 to 100. In this cold shrinkable termination, a stress control glue with high dielectric constant is provided to optimize the electric-field distribution on an insulation surface of the electric power cable. Thereby, the structure of the cold shrinkable termination is simplified and the cost thereof is reduced. The cold shrinkable termination may be adapted to an electric power cable used to transmit voltage less than 26/35 kV.

Abstract: A coaxial cable comprises inner and outer conductors disposed along an elongate axis, a dielectric insulating material disposed between the inner and outer conductors, a compliant jacket disposed over the inner and outer conductors, and a compliant reinforcing outer layer disposed over the compliant inner jacket, the outer layer being physically separate from the inner jacket and comprising off-axis fibers to react loads incurred during one of two operating modes, i.e., an aerial and an in-ground operating mode.

Abstract: A conductor includes a core with at least one conductive filament, and a coating deposited on a surface of the core. The coating is made of a rare earth material that includes at least one rare earth element selected from the group consisting of Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), Scandium (Sc) and Yttrium (Yt).

Abstract: A high voltage connection between a first line of a traveling wave tube and a second line of a voltage supply unit for the traveling wave tube includes a plug which is connected to an end section of the first line or of the second line by a crimp connection, and a socket which is connected to an end section of the other line by a crimp connection. Furthermore, a method for manufacturing a high voltage connection is also described.

Abstract: The assembly includes a protective elastic tubular body and a tubular core for holding the tubular body expanded including a first part and a second part which are associated, the core being in an operating position in which the second part covers the first part, and being configured for an elongate member to be inserted into its internal space in operating position and for a pull then applied to the first part to make it slide relative to the second part to reach an extended position in which it can no longer move in relation to the second part; the second part including legs projecting axially from a collar and connected to each other exclusively by the collar; in the operating position the collar and legs surround the first part; and in the extended position the collar surrounds the first part and the legs are axially beyond the first part.

Abstract: A linked cable assembly includes: (1) a pair of stripped shielded cable assemblies, each including: (a) a stripped cable including: an inner conductive core, an inner insulator surrounding the core, an inner shield surrounding the inner insulator, a sheath surrounding the inner shield; (b) a ring compressed directly against the inner shield. (2) a connector assembly electrically linking the shielded cables and including: a conductive shield housing, an insulator disposed within the shield housing, a conductive busbar contacting the insulator, but not the shield housing.

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.

Abstract: A wire harness having at least wire harness assembly having a splice of at least three shielded wire cables is presented. The assembly includes a flexible insulation layer wrapped about the joined core conductors of the three cables, a flexible conductive layer wrapped about the shield conductors of the cables, and a section of dual wall heat shrink tubing enclosing the flexible conductive layer and portions of the insulative jackets of the cables. The flexible conductive layer does not include any solder.

Abstract: Provided are devices, methods and systems. A cover system may include a unitary cold shrinkable, tubular, elastomeric cover sleeve defining a cover sleeve through passage that is configured to receive the electrical cable. The cover sleeve may include a first type of stress control element and a second type of stress control element that is different from the first type of stress control element. A holdout maintains the cover sleeve in an expanded state in which the cover sleeve is elastically expanded and when removed, permits the cover sleeve to radially contract to a contracted state about the electrical cable. The first type of stress control element includes a geometric stress cone that includes an electrically conductive and/or semiconductive portion that is configured to conductively engage a semiconductor layer of the electrical cable. The second type of stress control element includes a high-K stress relief element.

Abstract: A coaxial cable comprises inner and outer conductors disposed along an elongate axis, a dielectric insulating material disposed between the inner and outer conductors, a compliant outer jacket disposed over the inner and outer conductors, and a reinforcing outer jacket disposed over the compliant inner jacket, the outer jacket being physically separate from the inner jacket and comprising on-axis and off-axis fibers disposed in a binding matrix, the outer jacket comprising more on-axis than off-axis fibers.

Abstract: A pre-expanded cover assembly for protecting a cable splice connection including a cable, the cable including an electrical conductor surrounded by a cable insulation layer, includes a splice body assembly and a removable holdout. The splice body assembly includes a tubular, cold-shrinkable, electrically insulative, elastomeric splice body having an interior surface defining an interior passage. The splice body assembly further includes a tubular layer of a conformable medium pre-mounted on the interior surface of the splice body. The conformable medium is a flowable material having a high electrical permittivity. The splice body assembly is mounted on the holdout such that the holdout maintains the splice body in an elastically radially expanded state, and the holdout is selectively removable from the splice body to permit the splice body to elastically radially contract.

Abstract: An inventive method of mounting a cold shrinkable termination on an electric power cable has the steps of: providing a support tube having an outer surface coated with a soft material comprising a gel or a sealing compound on a predetermined segment; pre-expanding an insulation body of a cold shrinkable termination on the support tube coated with the soft material; inserting a cable joint of the electric power cable having a portion of a conductive shielding layer and a portion of an inner insulation layer removed, into the support tube; and removing the support tube from the cold shrinkable termination such that the cold shrinkable termination shrinks on the cable joint of the electric power cable, and the soft material is positioned between the cold shrinkable termination and the cable joint.

Abstract: A cold shrinkable termination has an electric power cable, an insulation body, and a stress control tube. The electric power cable has a conductor core, an insulation layer covering the conductor core, and a conductive shielding layer covering the insulation layer. The insulation body has a first end portion and an opposite second end portion. The stress control tube is disposed in the insulation body adjacent to the second end portion of the insulation body. The stress control tube has a first tube portion directly overlapped on the insulation layer of the electric power cable, and a second tube portion directly overlapped on the conductive shielding layer of the electric power cable and extending a predetermined length thereon when the cold shrinkable termination is mounted on the electric power cable.

Abstract: An apparatus is for visual indication of an energized state of electrical conductors. The apparatus includes two electrodes structured to capacitively couple to two energized electrical conductors, respectively, in order to harvest an electric field. A rectifier is powered from one or both of the two electrodes. An illuminated indicator or a non-illuminated indicator is powered from the rectifier.

Abstract: [Problem]A power cable polymer connector is provided which is lighter than when using a porcelain insulator and can exert a free-standing property to maintain the arranged position even if it is used horizontally. [Solution]A power cable polymer connector 1 includes a polymeric insulating tube 2 including a cable insertion hole 2a, 2b to allow an insertion of a stripped end 101 of a power cable 100. The polymeric insulating tube 2 further includes an insulation 20 including a polymer-based material and an embedded pipe 21 including a metal and embedded on an inner peripheral surface of the insulation 20 so as to face the end of the power cable 100.

Abstract: There are provided: a shield projecting portion (4A) being a part of a shield layer (4) of a shield wire (1) projected outside of an exterior covering (5) to be exposed; an annular member for grounding (10, 10A, 10B) disposed in a position surrounding an outer circumference of the shield wire (1) and including a housing chamber (12, 22) having an opening (13) along an annular shape of the annular member for grounding and being configured to house the shield projecting portion (4A) and a ground wire (7) inserted from the opening (13); and a push-in member (20, 20B) inserted from the opening (13) and housed in the housing chamber (12, 22) after insertion of the ground wire (7) and the shield projecting portion (4A) to bring the shield projecting portion (4A) and the ground wire (7) into close contact with each other.

Abstract: A pre-expanded cover unit for an electrical cable includes a cold-shrinkable, tubular, elastomeric cover sleeve, a removable holdout, and a positioning device. The cover sleeve defines a cover sleeve through passage configured to receive the electrical cable. The holdout is mounted within the cover sleeve through passage and configured to be withdrawn therefrom. The holdout maintains the cover sleeve in an expanded state in which the cover sleeve is elastically expanded and, when withdrawn from the cover sleeve through passage, permits the cover sleeve to radially contract to a contracted state about the electrical cable. The positioning device is secured to the cover sleeve and includes a cable clamp. The cable clamp is configured to secure the positioning device to the electrical cable such that, when the holdout is withdrawn from the cover sleeve, the positioning device axially constrains the cover sleeve relative to the cable to axially align the contracted cover sleeve with the electrical cable.

Abstract: The invention relates to the domains of power electronics and electric power transmission systems and concerns a new structure for wall bushings for High and Ultra High Voltage AC or DC applications. The wall bushing is remarkable as it can be assembled as a kit of two replaceable modules: a plug type module (20) and a socket type module (30) whose central conductors (15a,15b) are connected by a joint that allows their thermal expansion.

Abstract: An angular high-voltage plug that connects to a cable is described for use in high-voltage electrical systems of motor vehicles. The angular high-voltage plug includes an electrically insulating monolithic housing. The plug also includes an outer conductor and an inner conductor. The outer conductor includes a first outer conductor part at the cable that includes a connecting area and a linking area and a second outer conductor part at the plug. The first outer conductor part and the second outer conductor part are interconnected using an interference fit.

Abstract: Disclosed is a corona-free cap assembly for achieving uniform electrical stress distribution around an electrical device having a cylindrical end, the corona-free cap assembly comprising: a clamping member configured for clamping on the cylindrical end along circumferential direction of the cylindrical end; and a corona-free cap comprising a grading chamber with two open ends, the corona-free cap further comprising a connection component fixed inside the grading chamber and adapted for connection with the clamping member in a manner that the corona-free cap is detachably fixed on the electrical device and the cylindrical end of the electrical device is at least partially extended into the grading chamber of the corona-free cap through one of the open ends.

Abstract: The invention relates generally to field grading materials and, more particularly, to field grading materials including graphene oxide, reduced graphene oxide, or both, exhibiting non-linear resistivity. In one embodiment, the invention provides a composite material comprising: a polymer material; and reduced graphene oxide distributed within the polymer material.

Abstract: A communication outlet for use with a communication plug. The outlet includes a shutter door biased by at least one biasing member toward a closed position in which the shutter door substantially obstructs the opening. Insertion of the communication plug into the opening transitions the shutter door from the closed position to an open position. Optionally, the outlet includes a shutter lock member adjacent the shutter door. The shutter lock member prevents the shutter door from transitioning from the closed position to the open position when the shutter lock member is in a locked position. The shutter lock member is transitionable from the locked position to an unlocked position by the insertion of the communication plug into the opening. Optionally, the outlet includes a wire manager configured to position a plurality of wires to engage a plurality of wire contacts inside the outlet.

Abstract: A permanent ground point for a splicing connector is provided. The ground point is comprised of a ground rod that is permanently attached to a port on the splicing connector. A grounding clamp may then be attached to the ground point after the system is de-energized in order to provide a safe connection to system ground.

Abstract: An electrical connector assembly configured to couple a power cable and at least one other electrical component, includes a housing body that includes a outer jacket, an insert portion, and an insulative inner housing positioned between at least a portion of the outer jacket and the insert portion. The housing body forms at least one bore for receiving the power cable. The outer jacket comprises a cable receiving jacket portion and a main body jacket portion. At least a portion of the cable receiving jacket portion is configured to engage the power cable received into the housing body. The cable receiving jacket portion comprises a cold shrink material configured to securely engage the power cable upon and the main body jack portion comprises a non-cold shrink material.

Abstract: Terminal connection device for connecting an end of a medium- or high-voltage power cable to a connection point, comprising an interface cable, an inner conductor and a conductive or semiconductive layer. The terminal connection device further comprises a first stress control tube comprising a stress control element and an insulation layer arranged around the stress control element. The terminal connection device further comprises a first cable connector for connecting the interface cable to the power cable. The terminal connection device further comprises a second stress control tube comprising a stress control element and an insulating layer arranged around the stress control element, wherein the second stress control tube is mounted over the second end portion of the interface cable and at least a portion of the first cable connector. The terminal connection device further comprises one or more tubular shrinkable sleeves.

Abstract: A splice housing is configured to slide over and engage with a metallic connector that couples together cable conductors in an electrical distribution system. The splice housing has a first end arranged to engage a first cable, a second end arranged to engage a second cable and a central portion set between the first and second ends that engages the metallic connector. A first support core holds the first end in an expanded state, while a second support core holds the second end in an expanded state. The first and the second ends are molded so that they have relaxed internal diameters that are smaller than a relaxed internal diameter of the central portion.

Abstract: An electrical equipment connector having a replaceable bushing for an electrical power connector is disclosed. The replaceable bushing includes an insulator body having a tapered exterior surface formed on the first end, and a tapered interior surface formed in a second end. A conductor body extends through the insulator body and has a through bore with a counterbore at one end. A captured bolt in the counterbore engages a threaded tap in a conductor body disposed in the housing such that the tapered interior surface fits over and conforms to a tapered exterior surface on the housing connector.

Abstract: An electrical connector includes a first cable termination chamber configured to receive a first power cable having at least a first conductor sheathed at least in part by a first insulating layer and a first insulation screen layer. Also, the electrical connector includes a first non-linear resistive layer configured to be coupled to a portion of the first conductor unsheathed by at least the first insulation screen layer and configured to control a direct current electric field generated in the first cable termination chamber. In addition, the electrical connector includes a first deflector configured to be coupled to the first power cable and control an alternating current electric field generated in the first cable termination chamber.

Abstract: A jointing assembly for electrical cables may include: a connector extending about a longitudinal axis and provided, at at least one end portion thereof, with at least one housing seat for at least one free end of a respective electrical cable; and a shrinkable sleeve coaxially arranged in a radially outer position with respect to the connector. The shrinkable sleeve may be held in a radially expanded state by at least one removable support element radially interposed between the connector and the shrinkable sleeve. The connector may be mechanically coupled to the at least one removable support element by at least one stop element that radially projects from at least one of the connector and the at least one removable support element, and that contacts the other one of the connector and the at least one removable support element.

Abstract: A joint body for protecting an electrical cable connection including an electrical cable includes an expandable, elastomeric bladder sleeve and an electrically insulating gel. The bladder sleeve defines a gel cavity and a cable passage to receive the electrical cable. The gel is disposed in the gel cavity and surrounds at least a portion of the cable passage. The joint body is configured to be installed on the connection such that the connection is disposed in the cable passage and is surrounded and electrically insulated by the gel.

Abstract: Disclosed herein are nanocomposite materials, devices thereof and methods thereof with a dielectric constant and corona resistance while having an increased or substantially maintained energy density, breakdown strength and/or dissipation factor relative to the polymer.

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.