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Frequency conversion cable with flexible metal sheath

A flexible metal, frequency conversion cable technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problem that the shielding layer cannot simultaneously suppress electromagnetic wave emission and short-circuit current channels, so as to prevent excessive induction electric heating, prevent termites and fire resistance performance, the effect of reducing inductance

Active Publication Date: 2015-07-01
GOLD CUP ELECTRIC APP HENGYANG CABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary frequency conversion cables generally use copper wire braided shielding, copper wire winding shielding or copper tape wrapping shielding. The shielding suppression coefficient is up to about 85%, and the shielding layer cannot simultaneously suppress electromagnetic wave external emission and short-circuit current channel.

Method used

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  • Frequency conversion cable with flexible metal sheath
  • Frequency conversion cable with flexible metal sheath

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 The frequency conversion cable with a flexible metal sheath, rated working voltage U 0 / U is 0.6 / 1kV. It includes an insulated wire core, a flexible metal sheath 6 wound on the insulated cable core, and a non-metallic outer sheath 7 wrapped outside the flexible metal sheath 6 .

[0016] The non-metallic outer sheath 7 is extruded from a temperature-resistant 90°C polyvinyl chloride sheathing material, with a nominal thickness of 1.8mm. The color of the non-metallic outer sheath 7 is generally black, and can be adjusted to other colors according to customer requirements.

[0017] The flexible metal sheath 6 is made of pre-rolled soft copper strip, which is wrapped on the insulating cable core by covering, and the overlapping rate of covering is not less than 20% when wrapping. The cross-section of the annealed copper strip is roughly Z-shaped, and its nominal thickness is 0.1mm.

[0018] The insulated cable core is composed of 3 main cores, 3 groundi...

Embodiment 2

[0023] Such as figure 2 The frequency conversion cable with a flexible metal sheath, rated working voltage U 0 / U is 8.7 / 15kV. It includes an insulated wire core, a spacer 8 wrapped on the insulated wire core, a flexible metal sheath 6 wound on the spacer 8 , and a non-metallic outer sheath 7 wrapped outside the flexible metal sheath 6 .

[0024] The non-metallic outer sheath 7 is made of extruded polyvinyl chloride sheath material with a temperature resistance of 90°C, and the nominal thickness is 3.3mm. The color of the non-metallic outer sheath 7 is generally black, and can be adjusted to other colors according to customer requirements.

[0025] The flexible metal sheath 6 is made of pre-rolled soft copper strip, which is wrapped on the insulating cable core by covering, and the overlapping rate of covering is not less than 20% when wrapping. The cross-section of the annealed copper strip is roughly S-shaped, and its nominal thickness is 0.25mm.

[0026] The isolation ...

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Abstract

The invention discloses a frequency conversion cable with a flexible metal sheath. The frequency conversion cable with the flexible metal sheath comprises an insulated cable core and a non-metal outer sheath and further comprises the flexible metal sheath wound on the cable core. The non-metal outer sheath is wrapped on the flexible metal sheath, the flexible metal sheath is made of a soft copper strip formed by pre-rolling and is covered and wound outside the cable core, and the covering overlapping rate is no smaller than 20%. The frequency conversion cable has the advantages that the frequency conversion cable can be applied to the high-voltage and high-frequency environment, and a shielded cable in the structure can resist electromagnetic induction, bad grounding and conducted interference of a power line, reduces inductance and avoids over large inducting electric heat. A shielding layer can have the effect of restraining external emission of electromagnetic waves, can also serve as a channel for short-circuit current and has protecting effect of a neutral cable core. The cable has pressure-resistant and tensile property, is convenient to curve and lay and simultaneously has ratproof and termite-proof performances and certain fireproof performances.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to frequency conversion cables with flexible metal sheaths. Background technique [0002] Ordinary frequency conversion cables generally use copper wire braided shielding, copper wire winding shielding or copper tape wrapping shielding. The shielding suppression coefficient is up to about 85%, and the shielding layer cannot simultaneously suppress electromagnetic wave external emission and short-circuit current channels. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a frequency conversion cable with a flexible metal sheath to solve the shortcomings of the prior art. [0004] In order to realize the above-mentioned purpose of the invention, the technical scheme adopted in the present invention is: [0005] A frequency conversion cable with a flexible metal sheath, comprising an insulated core and a non-metallic outer sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/17H01B7/22H01B7/29
Inventor 不公告发明人
Owner GOLD CUP ELECTRIC APP HENGYANG CABLES
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