A power conductor for conducting electricity between a power source and a load is disclosed. A conductive body connects between the power source and the load. A sealed chamber is provided in the interior of the conductive body and contains a working fluid for changing phase when heated. A circuit, a vehicle power distribution circuit, and a vehicle incorporating the same are also disclosed.

The invention relates to the skin-effect based induction-resistive heating units and can be used in devices intended for prevention of paraffin-hydrate deposits formation in oil-and-gas wells and pipelines, as well as for warming up of viscous products in pipelines and vessels for the purpose of their transporting and pumping. The skin-effect based heating cable contains the center conductor, the inner insulation layer and the ferromagnetic outer conductor coaxially located around them. The invention enables to simplify using due to increase of the heating cable flexibility and due to reduce the energy consumption at its operation.

A cable is provided having at least one electrically insulating layer obtained from a polymer composition with at least one polypropylene-based thermoplastic polymer material and at least one inorganic filler selected from aluminium oxide, a hydrated aluminium oxide, magnesium oxide, zinc oxide, and a mixture thereof; and a method for making the cable.

Electrical cables and processes for making and using same. In some examples, the electrical cable can include one or more insulated electrical conductors and one or more metallic elements cabled together and a metallic layer disposed about the one or more insulated electrical conductors and the one or more metallic elements. The one or more metallic elements can partially fill a space located between the one or more insulated electrical conductors and the metallic layer. The one or more insulated electrical conductors can each include an electrically conductive core, a layer of electrically insulating material disposed about the electrically conductive core, and a layer of metallic strands disposed about the layer of electrically insulating material.

The invention relates to a cable comprising at least one electrically insulating layer obtained from a polymer composition comprising at least one thermoplastic polymer material based on polypropylene, at least one dielectric liquid, at least a first thermally conductive inorganic filler having a morphology M1 and at least a second thermally conductive inorganic filler having a morphology M2 different from M1.

The present invention comprises a busbar enclosing at least one cavity, wherein the busbar has at least one web projecting from the wall at least partially into the at least one cavity. The at least one cavity is at least partially filled with a phase change material which is in thermally conductive contact with the at least one web.

Methods and systems for a dielectric material coated busbar are provided. In one example, a conductive material may be formed into a shape of a busbar and portions of the busbar may be selectively coated with a dielectric material which may be both electrically insulating and thermally conductive. The dielectric coated portions of the busbar may dissipate heat to a heat sink via a thermal interface material compressed on the busbar.

Provided is a far infrared ray-radiating and electromagnetic wave-shielding heating wire using a graphene plate. The heating wire includes: one core wire formed by binding several strands of threads, each of which has a graphene plate conductive layer formed therein; and a plurality of strands of heat wires covered by a covering material and wound around the outer surface of the core wire. Accordingly, when the heating wire is heated by supplied power, heat conductivity is improved, so that electricity consumption in an electric heating product is reduced and the effect of radiating far infrared rays and shielding electromagnetic waves is enhanced. In addition, even when the heating wire is bent and transformed according to the use of the product, disconnection and the risk of fire caused thereby are prevented, so that usage stability of an electric heating product group to which the heating wire is applied is enhanced.

A skin effect heating system for long pipelines includes a heater cable disposed in a ferromagnetic or other conductive heat tube. A semiconductive jacket contacts the inner surface of the heat tube, where the charge density of the return current carried by the heat tube is at its highest. The semiconductive jacket material has a resistivity that is sufficiently low to reduce or eliminate arcing events such as corona discharge by allowing accumulated charge on the heat tube to dissipate. The resistivity is also high enough to prevent the return current from flowing into or through the semiconductive outer layer, so that heat production capacity of the system is maximized.

A heavy-current cable, in particular a charging cable, has an outer jacket, a number of heavy-current cores which extend in the longitudinal direction, and at least one cooling jacket with at least one hollow chamber extending in the longitudinal direction for conducting a coolant. A power supply system, in particular a charging system for a hybrid or electric vehicle, has such a corresponding heavy-current cable.