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Power cable

A power cable, with insulation technology, applied in the direction of insulated cables, power cables with shielding/conductive layers, cables, etc., can solve the problems of large distributed capacitance, reduce electromagnetic interference, reduce electromagnetic interference, etc., to reduce electromagnetic interference. , the effect of reducing the operating temperature and reducing the intensity of radiation interference

Inactive Publication Date: 2017-06-20
MCC CAPITAL ENGINEERING & RESEARCH
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AI Technical Summary

Problems solved by technology

[0002] The power cables currently used generally use three-phase three-wire cables, or three-phase four-wire cables, or use shielded three-phase three-wire plus three-ground cables. The disadvantage is that the electromagnetic compatibility (Electro Magnetic Compatibility, EMC) is poor.
The international patent WO 82 / 01785 "High Voltage Cable" discloses a shielded cable, which adopts a structure of three phase wires and three ground wires interlaced to reduce electromagnetic interference, but it still does not completely reduce electromagnetic interference
In addition, the power cables of the prior art also have the following disadvantages: large distributed capacitance, short service life, high operating temperature

Method used

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0022] figure 1 It is a schematic structural diagram of the power cable in the embodiment of the present invention. Such as figure 1 As shown, the power cable in the embodiment of the present invention may include:

[0023] outer sheath 110;

[0024] a shielding sheath 109 placed within the outer sheath 110;

[0025] Six insulated phase wires 101-106 and one ground wire 107 placed in the shielding sheath 109, the six insulated phase wires 101-106 are evenly distributed on the periphery of the ground wire 107, in a three-phase geometrically symmetrical arrangement ...

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Abstract

The invention discloses a power cable. The power cable comprises: an outer sheath; a shielding sheath placed in the outer sheath; six insulated phase wires and one ground wire placed in the shield sheath, wherein the six insulated phase wires are evenly distributed on the periphery of the ground wire and are arranged in a three phase geometric symmetry structure, wherein each phase is provided with two insulated phase wires which are symmetrically arranged at 180 degrees relative to the grounding wire; and a insulating filling material filled between the shielding sheath and the insulated phase wires. According to the invention, the electromagnetic interference, the distributed capacitance and the running temperature of the power cable can be reduced, the service life of the power cable can be prolonged. The power cable disclosed by the invention is suitable for the power cables of a frequency converter.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to power cables. Background technique [0002] Currently used power cables generally use three-phase three-wire cables, three-phase four-wire cables, or shielded three-phase three-wire plus three-ground cables. The disadvantages are poor Electro Magnetic Compatibility (EMC). The international patent WO 82 / 01785 "High Voltage Cable" discloses a shielded cable with three phase wires and three ground wires staggered to reduce electromagnetic interference, but it still does not completely reduce electromagnetic interference. In addition, the power cables in the prior art also have the following disadvantages: large distributed capacitance, short service life, and high operating temperature. Contents of the invention [0003] An embodiment of the present invention provides a power cable, which is used to reduce electromagnetic interference, distributed capacitance and operatin...

Claims

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Application Information

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IPC IPC(8): H01B7/17H01B7/295H01B9/02
CPCH01B7/17H01B7/295H01B9/02
Inventor 周冶陆波
Owner MCC CAPITAL ENGINEERING & RESEARCH
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