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twisted wire cable

A technology of strands and electrical conductors, applied in the field of electrical conductors, which can solve the problems of unacceptable electrical insulation and conductor temperature rise.

Active Publication Date: 2018-01-26
FIVE CELES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Unfortunately, especially in the case of high-frequency currents, the electrical insulation of the different strands does not always allow a significant rise in conductor temperature to be avoided

Method used

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Embodiment Construction

[0024] refer to Figures 1 to 3 , see conductor C according to the invention. The core of the conductor C consists of a tube 1 through which the cooling fluid flows. The fluid or gas can be water, oil, or any other heat transfer fluid.

[0025] Tube 1 is realized from an electrically insulating polymer to avoid Foucault currents being induced in tube 1 at higher frequencies. In order to provide the conductor C with the necessary flexibility, the tube 1 presents a helical profile.

[0026] The strands 2 are arranged longitudinally around the tube 1 . The strands 2 are recombined to form a wire bundle and each strand 2 is covered by an electrically insulating layer 6 . In theory there is no need to add auxiliary insulation between the wire bundles, this is because the strands are already isolated. Each strand 2 has multiple wires isolated.

[0027] In fact, the strands can be isolated in order to improve the mechanical strength of the harness and its handling as well as to...

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Abstract

The invention relates to an electric conductor (C) which comprises a plurality of strands (2) extending between two ends, each one of the strands (2) having on the surface thereof a layer of electrical insulator (6), the strands (2) being electrically connected in parallel at each end of the electric conductor (C), characterised in that the strands (2) are arranged around at least one tube (1), made of an electrically insulating material, forming a core, with a coolant flowing through the tube (1).

Description

technical field [0001] The invention relates to an electrical conductor having a plurality of strands extending between two ends, each strand having an electrical insulation layer on its surface, the strands being electrically connected in parallel to each end of the electrical conductor. This type of electrical conductor is often referred to as a stranded wire cable. [0002] More specifically, the frequency of use of the conductors to which the invention relates is comprised between 1 kHz and 500 kHz. Background technique [0003] At higher frequencies, current tends to flow only on the surface of the conductor due to a phenomenon known as the skin effect. The outer layer of the conductor that conducts current is therefore called the skin depth. This phenomenon causes the flow of current to circumscribe the periphery of the conductor, thereby reducing the useful cross-section, which leads to higher resistance and increases losses. [0004] The use of a stranded wire cab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/30H01B7/42
CPCH01B7/303H01B7/425
Inventor G·加布勒
Owner FIVE CELES
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