An insulation wire includes a conductor, a first insulating layer formed in an outer surface of the conductor, and a second insulating layer formed in an outer surface of the first insulating layer. In the insulation wire, the first insulating layer is a thermoplastic resin layer that is made of polyphenylene sulfide or polyether ether ketone, and the second insulating layer is a thermosetting resin layer.

An insulation wire includes a conductor, a first insulating layer formed in an outer surface of the conductor, and a second insulating layer formed in an outer surface of the first insulating layer. In the insulation wire, the first insulating layer is a thermoplastic resin layer that is made of polyphenylene sulfide or polyether ether ketone, and the second insulating layer is a thermosetting resin layer.

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.

A lighter and more space-saving wire harness that has a function of retaining the shape of part of electric wires and an electromagnetic shield function. The wire harness includes a plurality of spliced and sheathed electric wires and a conductive shielding member. Each of the spliced and sheathed electric wires has a spliced core wire and an insulating sheath that covers the spliced core wire. The spliced core wire includes a first core wire that is a single conductive wire, and a second core wire that is a bundle of a plurality of conductive wires that are thinner and shorter than the first core wire, the second core wire being connected to an end portion of the first core wire. The shielding member is formed in a flexible tubular shape, and collectively covers the plurality of spliced and sheathed electric wires.

Tubing encapsulated cable consists of one or more electrical conductors and possibly one or more fiber optic cables sheathed in a corrosion resistant metallic alloy. However, pumping during the installation of tubing encapsulated cable is required to overcome the capstan effect of the tubing encapsulate cable inside the coil tubing as the tubing encapsulated cable travels through the coiled up wraps of coil tubing. In an embodiment of the invention the tubing encapsulated cable consists of one or more electrical conductors and possibly one or more fiber optic cables sheathed in a fiber reinforced composite sheath. Because there is little drag between the fiber encapsulated cable and the coil tubing, conventional pumping operations used to install braided wireline into coil tubing may not be required when installing fiber encapsulated cable into coil tubing. Additionally, the smooth outside surface and relatively small diameter of the fiber encapsulated cable are desirable attributes for well intervention work because the smooth surface is more resistant to chemical attack than braided wire while the smooth surface and relatively small diameter provide little viscous drag while fluids are pumped through the coil tubing in the course of intervention operations.

An electric power cable is provided, wherein the electric power cable comprises an organic silicon insulating coating layer capable of being cured at room temperature. Generally, the electric power cable comprises a cable conductor capable of transmitting electric energy, and the organic silicon insulating coating layer is coated to the exterior surface of the cable conductor. The cable conductor may be an exposed overhead bare conductive wire, and the organic silicon insulating coating layer is especially suitable for being formed on the exterior surface of the overhead bare conductive wire by coating directly thereto.

An electric power cable is provided, wherein the electric power cable comprises an organic silicon insulating coating layer capable of being cured at room temperature. Generally, the electric power cable comprises a cable conductor capable of transmitting electric energy, and the organic silicon insulating coating layer is coated to the exterior surface of the cable conductor. The cable conductor may be an exposed overhead bare conductive wire, and the organic silicon insulating coating layer is especially suitable for being formed on the exterior surface of the overhead bare conductive wire by coating directly thereto.

A method for installing an elastomeric cover sleeve on an electrical connection including a connector and a cable having a cable axis includes: providing an installation tool including a slide portion; premounting the installation tool on the cable such that the slide portion extends along the cable axis and covers a portion of the cable; thereafter, sliding the cover sleeve onto the cable and onto the slide portion of the premounted installation tool to a parked position wherein the slide portion is interposed between the cover sleeve and the cable; installing the connector onto the cable; and thereafter, sliding the cover sleeve along the cable axis and the slide portion onto the connector.

Magnet wire including extruded insulation formed from multiple layers of different materials is described. A magnet wire may include a conductor and insulation formed around the conductor. The insulation may include a first layer of extruded thermoplastic insulation formed around the conductor and a second layer of extruded thermoplastic insulation formed around the first layer of extruded thermoplastic insulation. The first layer may be formed from a first polymeric material having a first thermal index, and the second layer may be formed from a second polymeric material having a second thermal index higher than the first thermal index.

A method of forming a planar, low loss electrical component such as an inductor or transmission line is provided. A channel can be formed on a top surface of a substrate. A threading plate can be positioned on an upper surface of the channel. A wire or fiber can be introduced through the substrate, the channel, and the threading plate. The wire or fiber can then be guided into the channel using the threading plate. The substrate and the threading plate can then be removed.