The present invention relates to an accessory for high-voltage direct-current (HVDC) energy cables comprising: at least one element made from a crosslinked elastomeric polymer material, and at least one scavenging layer comprising zeolite particles. The zeolite particles are able to scavenge, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the element during the accessory lifespan. Moreover, the zeolite particles can prevent the crosslinking by-products present in the element of a non-degassed accessory from migrating towards the insulating layer of the energy cable on which the accessory is mounted.

The present disclosure relates to a cable module with a detachable fracture feature, a gas-insulated device including the cable module, and a method for manufacturing the cable module. The cable module for a high voltage gas-insulated device with a detachable electric connection includes: an enclosure provided with a first opening and a second opening; an insulator provided with a conductive insert and fixed to a first flange of the enclosure around the first opening; a cable terminal connector passing through a wall of the enclosure and including a first end positioned inside the enclosure and a second end positioned outside the enclosure and configured to be connected to an external cable; a plurality of conductors connecting the conductive insert and the first end of the of the cable terminal connector.

Superconducting cable connector structures include a terminal body (or other structure) onto which the tapes from the superconducting cable extend. The terminal body (or other structure) has a diameter that is sufficiently larger than the diameter of the former of the superconducting cable, so that the tapes spread out over the outer surface of the terminal body. As a result, gaps are formed between tapes on the terminal body (or other structure). Those gaps are filled with solder (or other suitable flowable conductive material), to provide a current path of relatively high conductivity in the radial direction. Other connector structures omit the terminal body.

The present invention provides a structure for an end of an MI cable, capable of being produced in a short time with a small number of processing steps. In the structure for the end of the MI cable, a connector including metal pins is attached to the end of the MI cable, and the metal pins respectively have sharp-pointed front ends stuck into the end faces of the wires of the MI cable, and rear ends functioning as electrodes for connection with a soft cable.

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.

An insulation system for jointing of high voltage conductors has an inner layer made of a crosslinked first polymeric semiconducting material, an intermediate insulating layer made of a thermoplastic polymeric insulating material, and an outer layer made of a second polymeric semiconducting material. The insulation system is adapted for surrounding the electric conductor joint.

A cover assembly for covering an elongate substrate includes a resilient, elastically expandable sleeve member and a holdout device. The sleeve member defines an axially extending inner sleeve passage. The holdout device includes a generally tubular, flexible bladder sleeve mounted in the inner sleeve passage. The bladder sleeve defines a cavity and a holdout passage to receive the elongate substrate. The cavity is inflated or inflatable with an inflation gas.

A waterproof seal for electrical assemblies having conductive wires attached to a metal contact and inserted into a connector body. The conductive wires and metal contact are coated with solder to fill the gaps. The space between the soldered wires and the connector body are filled with an epoxy. The wire insulation and connector body are continuously sealed with a bonding agent. A section of wire insulation and the connector body are encased within an outer plastic jacket overmold.

The present disclosure relates to a bushing including an electrical conductor comprising a terminal at a first end of the bushing. The bushing also includes an electrically insulating condenser core arranged around the conductor and defining a central longitudinal through-hole through which the conductor extends. The bushing also includes a plurality of concentric field-grading layers arranged in the condenser core, comprising an inner field-grading layer and an outer field-grading layer. The bushing also includes an electrically conductive head electrically connected with the conductor passing there through, forming a gas-tight cap of the first end of the bushing outside of the condenser core, sealingly engaging a circumferential lateral outer surface of the condenser core and sealingly engaging the conductor. The bushing also includes an electrically conductive connection between the inner field-grading layer and the head.

The present disclosure relates to a cable module with a detachable fracture feature, a gas-insulated device including the cable module, and a method for manufacturing the cable module. The cable module for a high voltage gas-insulated device with a detachable electric connection includes: an enclosure provided with a first opening and a second opening; an insulator provided with a conductive insert and fixed to a first flange of the enclosure around the first opening; a cable terminal connector passing through a wall of the enclosure and including a first end positioned inside the enclosure and a second end positioned outside the enclosure and configured to be connected to an external cable; a plurality of conductors connecting the conductive insert and the first end of the of the cable terminal connector.