Provided is an apparatus for enhancing power efficiency, the apparatus including a magnetic substance configured to generate a magnetic field, a conductive wire configured to pass the magnetic field, and of which one end is electrically connected to a power line to which alternating current (AC) is applied, and a controller connected to another end of the conductive wire, and configured to apply, to the conductive wire, and to prevent a sudden overcurrent a voltage surge from flowing into an electric device. The conductive wire includes a conductive plate, and the conductive plate is disposed in a space in which the magnetic field is generated to be separate from the magnetic substance, and a first width of the conductive plate can be the same as or greater than a second width of the conductive wire.

A high voltage alternative current cable is provided having mechanically reinforced electric conductor, by having a reinforcement member at the centre of the conductors of the cable, where the reinforcement member is made of one or more low or non-magnetic steel wires, one or more wires of CuNiSi precipitation alloy, or one or more aluminium wires made of an EN AW-1xxx, EN AW-2xxx, EN AW-5xxx, AW-6xxx, EN AW-7xxx, or EN AW-8xxx alloy, according to the European aluminium standard.

A field grading composite body includes a polymeric matrix and a particulate filler distributed within the polymeric matrix. Particles of the particulate filler include a core formed from a semiconductor material, an oxide mixed layer deposited on the core, and conducting oxide layer. The conducting oxide layer deposited on the oxide mixed layer to provide an electrical percolation path through the polymeric matrix triggered by strength of an electric field extending through the field composite body. Conductors and methods of making field grading composite bodies for conductors are also described.

A shielding portion of a shielded conductive path (Wa) includes: a shielded pipe in which the inside thereof is partitioned into a plurality of electrical wire insertion paths; and a flexible shielding member that is tubular and is connected to an end portion of the shielding pipe. Out of a plurality of electrical wires that are inserted into the electrical wire insertion paths, a second electrical wire is led out of the shielding portion from an outlet port. Inside the shielding portion, a shielding tube encloses the second electrical wire, and prevents the second electrical wire and the first electrical wire from being affected by electromagnetic noise therefrom. A gap between the shielding tube and an opening edge of the outlet port is closed by a conductive sealing member.

A sensor assembly includes a connecting bar extending along a longitudinal axis and a tubular body extending along the longitudinal axis and at least partially surrounding the connecting bar such that the tubular body is radially spaced from the connecting bar. The tubular body includes a first skirt portion, a first plurality of cantilevered tabs extending from the first skirt portion in a first direction parallel to the longitudinal axis, a second skirt portion, and a second plurality of cantilevered tabs extending from the second skirt portion in a second direction opposite the first direction.

Provided is a system for directly sensing, measuring, or monitoring the temperature of an electrical conductor (31) of a power cable (10). A temperature sensitive capacitor (21C) is disposed in direct thermal contact with the electrical conductor (31). The temperature sensitive capacitor (21C) includes a dielectric material that has a dielectric constant variable with the temperature of the electrical conductor (31). The temperature of the electrical conductor (31) can be sensed, measured, or monitored by measuring the capacitance of the temperature sensitive capacitor (21C).

Embodiments of the invention provide a hollow cable for conveying radiofrequency and/or microwave frequency energy to an electrosurgical instrument that can fit within, e.g. slide relative to, the hollow cable. The hollow cable provides a bipolar electrical connection to the electrosurgical instrument that is maintained when the electrosurgical instrument is rotated relative to the hollow cable. The cable may comprise a hollow coaxial transmission line having a rotatable component mounted at its distal end. The rotatable component comprises a longitudinal passageway continuous with the hollow coaxial transmission line. The rotatable component is rotatable relative to the transmission line and comprises a first and second conductive portions that are respectively electrically connected to first and second terminals on the coaxial transmission line and which are configured to maintain an electrical connection with their respective terminal when rotated relative to the coaxial transmission line.

A high-voltage line for motor-vehicle high voltage includes an interior tube surrounding an interior cavity of the high-voltage line, an electrically conducting interior conductor surrounding the interior tube, an intermediate insulation surrounding the interior conductor, an electrically conducting outer conductor surrounding the intermediate insulation, and an outer insulation surrounding the outer conductor. The outer insulation, the outer conductor, the intermediate insulation, the interior conductor, and the interior tube are disposed coaxial to one another.

A liquid cooled charging cable system may be provided. The liquid cooled charging cable system may comprise a source, a load, a liquid cooled charging cable, and a cooling device. The liquid cooled charging cable may connect the source to the load, and may supply electric energy from the source to the load. The liquid cooled charging cable may comprise a supply conductor and a return conductor. The cooling device may pump a coolant around the supply conductor and the return conductor where the supply conductor and the return conductor may be immersed in the coolant.

A wire harness includes a wire portion having three wires arranged in the same direction, connectors connected to both end portions of the wire portion, a middle portion installed in an intermediate position of the wire portion between the connectors, a wire-side surge reducing section provided in the wire portion, a connector-side surge reducing section provided in each of the connectors, and a middle portion-side surge reducing section provided in the middle portion.