A wire harness includes a conductive first wiring material, wired to a vehicle, and a second wiring material wired to the vehicle in a state where at least a part of the second wiring material is bundled with the first wiring material. The second wiring material has a flow passage formed therein through which a liquid can flow.

A communications cable is described. The communications cable can include a cable jacket, a separator structure that defines one or more channels for receiving at least one communications medium, and an insulator that surrounds the communications medium. The cable jacket can include one or more corrugations on at least one of its interior or exterior surfaces. The separator can also include one or more grooves on at least a portion of its surface. The insulator can also include one or more indentations on at least one of its interior or exterior surfaces. The corrugations, grooves, and indentations can extend along the longitudinal length of the cable and define one or more air channels for forwarding and circulating air through or on the surface the cable. The circulation of air in the cable can reduce the temperature of the cable and increase the quality of the signal transmitted through the cable.

A relay arrangement includes at least two series-connected relays, which are mechanically and electrically connected to a main printed circuit board via first terminals and second terminals, and at least one flat conductor for conducting current between the at least two series connected relays. The flat conductor is mechanically connected to the main printed circuit board and electrically and thermally connected to the first terminals of the relays, and the at least one flat conductor is configured to dissipate heat produced during operation of the relays.

Provided are electrical harness assemblies and methods of forming such harness assemblies. A harness assembly comprises a conductor trace, comprising a conductor lead with a width-to-thickness ratio of at least 2. This ratio provides for a lower thickness profile and enhances heat transfer from the harness to the environment. In some examples, a conductor trace may be formed from a thin sheet of metal. The same sheet may be used to form other components of the harness. The conductor trace also comprises a connecting end, monolithic with the conductor lead. The width-to-thickness ratio of the connecting end may be less than that of the conductor trace, allowing for the connecting end to be directly mechanically and electrically connected to a connector of the harness assembly. The connecting end may be folded, shaped, slit-rearranged, and the like to reduce its width-to-thickness ratio, which may be close to 1.

The systems and methods described herein provide a submarine optical repeater in which a plurality of thermally conductive, electrically insulative, ceramic members form a hollow structure having an interior volume that is maintained at a relatively high first voltage when compared to a relatively low second voltage maintained external to the hollow structure. A conductive element at the first voltage disposed in the interior volume provides power to optical repeaters disposed on the interior surface of the hollow structure. Power flows radially outward from the conductive element to the optical repeaters to the surrounding environment about the submarine optical repeater. The thermally conductive ceramic members electrically isolate the optical repeaters from the second voltage while providing a thermally conductive pathway for the heat generated during the operation of the optical repeaters to dissipate into the surrounding environment.

A shielded cable includes at least one electric wire or cable, a shield being provided around the at least one electric wire or cable and including a plurality of wires comprising a metal material, an insulating coating being provided around the shield in direct- and plane-contact with the plurality of wires. The insulating coating includes a base resin composed of acid-modified fluoropolymer, and a heat-dissipating filler included in the base resin. The heat-dissipating filler is electrically insulating and has at least one functional group of NH.sub.2 group and OH group on its surface.

An electric energy transmission aluminum part and a machining process therefor including an aluminum conductive device (1) and an aluminum cable, with the aluminum cable including an aluminum conductive core (2) and an insulation layer (3) cladding a surface of the aluminum conductive core (2). An exposed section of the aluminum conductive core (2) with the insulation layer (3) stripped from the aluminum cable and at least part of the aluminum conductive core (2) clad with the insulation layer (3) are crimped inside the aluminum conductive device (1). A transition section (4) with a trapezoidal axial cross-section is provided at a junction between the insulation layer (3) and the exposed section of the aluminum conductive core (2) in the aluminum conductive device (1). Taking the transition section (4) as a demarcation point, an inner diameter of an end of the aluminum conductive device (1) that is crimped with the insulation layer (3) is greater than an inner diameter of an end of the aluminum conductive device (1) that is crimped with the aluminum conductive core (2). At least one concave structure is provided on a periphery of the aluminum conductive device (1). The concave structure provided on the surface of the aluminum conductive device (1) can effectively prevent the aluminum conductive device (1) from moving relative to a clamp, so as to solve the problem of displacement or rotation of the aluminum conductive device (1) in the clamp during welding, and improve the welding efficiency and the yield.

Provided are electrical harness assemblies and methods of forming such harness assemblies. A harness assembly comprises a conductor trace, comprising a conductor lead with a width-to-thickness ratio of at least 2. This ratio provides for a lower thickness profile and enhances heat transfer from the harness to the environment. In some examples, a conductor trace may be formed from a thin sheet of metal. The same sheet may be used to form other components of the harness. The conductor trace also comprises a connecting end, monolithic with the conductor lead. The width-to-thickness ratio of the connecting end may be less than that of the conductor trace, allowing for the connecting end to be directly mechanically and electrically connected to a connector of the harness assembly. The connecting end may be folded, shaped, slit-rearranged, and the like to reduce its width-to-thickness ratio, which may be close to 1.

Provided are electrical harness assemblies and methods of forming such harness assemblies. A harness assembly comprises a conductor trace, comprising a conductor lead with a width-to-thickness ratio of at least 2. This ratio provides for a lower thickness profile and enhances heat transfer from the harness to the environment. In some examples, a conductor trace may be formed from a thin sheet of metal. The same sheet may be used to form other components of the harness. The conductor trace also comprises a connecting end, monolithic with the conductor lead. The width-to-thickness ratio of the connecting end may be less than that of the conductor trace, allowing for the connecting end to be directly mechanically and electrically connected to a connector of the harness assembly. The connecting end may be folded, shaped, slit-rearranged, and the like to reduce its width-to-thickness ratio, which may be close to 1.

To this end a cable is provided for tandem communication and power transmission. The cable has a plurality of twisted pair conductors, a jacket surrounding said twisted pair conductors, and at least one active cooling element. The at least one active cooling element is configured to provide a thermoelectric cooling effect to the cable when one or more of said plurality of twisted pairs are employed to transfer electrical power in a power over Ethernet application.