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7-core fireproof cable

A fireproof cable and cable technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of long project period, troublesome laying and installation, high cost, etc., and achieve the effect of short project period, good fireproof performance and few accessories

Inactive Publication Date: 2018-10-02
镇江凯勒电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Inverters and other equipment need to be started through the star-delta step-down starting method. The cables of the star-delta step-down starting method are generally laid with two cables, and the two cables need to be connected and installed separately. Expensive and requires fire protection requirements

Method used

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  • 7-core fireproof cable

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Embodiment Construction

[0011] As shown in the figure, a 7-core fireproof cable includes a phase cable core, a number of phase cable cores coated with an insulating layer 7 form a cable phase conductor, and the periphery of the cable phase conductors is coated with inner sheaths from inside to outside. Sheath 4, outer sheath 6, a tape layer 2 is arranged between each sheath, the cable conductor is composed of 7 phase cable cores, the center is the N-phase cable core 5, and the N-phase cable core 5 is outer There are two sets of A-phase, B-phase, and C-phase cable cores evenly distributed along the circumference; the material of the phase cable cores is copper.

[0012] In the 7-core fireproof cable of the embodiment of the present invention, the specification of the N-phase cable core is 1*70mm, the specification of the first phase cable core 1 is 3*150mm, and the specification of the second phase cable core 3 is 3* 70mm, the N-phase cable core is at the center of the circle, the centers of the two s...

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Abstract

The invention relates to a 7-core fireproof cable. 7 phase line cable cores wrapped with insulating layers respectively form a cable phase line conductor; an inner sheath and an outer sheath sequentially wrap the periphery of the cable phase line conductor; a wrapping tape layer is arranged between the outer sheath and the inner sheath; an N-phase phase line cable core is arranged at the center ofthe cable phase line conductor; two sets of A-phase line cable cores, two sets of B-phase line cable cores and two sets of C-phase phase line cable cores are evenly spaced along the circumference ofthe N-phase phase line cable core; gaps among the N-phase phase line cable core, the two sets of A-phase line cable cores, the two sets of B-phase line cable cores and the two sets of C-phase phase line cable cores are filled with a fireproof material layer; the inner sheath is a rubber layer; and the outer sheath is a stainless steel strip armoring layer. The 7-core fireproof cable has the advantages of high rigid support strength, superior fireproof performance, few accessories, short engineering cycle, time-saving and labor-saving performance, and convenient installation. The 7-core fireproof cable can be laid one time, so that cable line phase laying required by star-delta step-down start can be realized.

Description

technical field [0001] The invention relates to a 7-core fireproof cable, which is specifically applied to a star-delta step-down starting mode. Background technique [0002] Inverters and other equipment need to be started through the star-delta step-down starting method. The cables of the star-delta step-down starting method are generally laid with two cables, and the two cables need to be connected and installed separately. It is costly and requires fire protection requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a 7-core fireproof cable, which can adapt to star-delta step-down starting mode, has simple structure, convenient installation and laying, and low cost. [0004] The 7-core fireproof cable of the present invention includes a phase cable core, a number of phase cable cores coated with an insulating layer form a cable phase conductor, and the periphery of the cable phase conductor is coate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/18H01B7/22H01B7/29
CPCH01B7/0045H01B7/1875H01B7/225H01B7/29
Inventor 王加慧
Owner 镇江凯勒电力科技有限公司
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