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A copper-clad aluminum conductor low-smoke halogen-free Class A flame-retardant power cable

A technology of power cables and copper-clad aluminum, applied in the direction of power cables, power cables with shielding layers/conductive layers, conductors, etc., can solve the problem of low fire resistance of flame-retardant cables and achieve good flame-retardant effects

Active Publication Date: 2022-05-17
郭智昊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, it is necessary to provide a copper-clad aluminum conductor low-smoke halogen-free Class A flame-retardant power cable to solve the problem of low fire resistance of existing flame-retardant cables

Method used

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  • A copper-clad aluminum conductor low-smoke halogen-free Class A flame-retardant power cable
  • A copper-clad aluminum conductor low-smoke halogen-free Class A flame-retardant power cable
  • A copper-clad aluminum conductor low-smoke halogen-free Class A flame-retardant power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 1-3 , a copper-clad aluminum conductor 11 low-smoke halogen-free Class A flame-retardant power cable, including a cable body, the cable body includes an outer protective sheath 2 and a cable core 1, and the cable core 1 includes a conductor 11 and an extruded conductor 11 an inner insulating layer 12 on the outer side, the conductor 11 is formed by twisting a plurality of copper-clad aluminum single wires;

[0033] The outer protective sheath 2 includes a first insulating layer 21, a metal shielding layer 22, a second insulating layer 23, a flame-retardant layer 24, a corrosion-resistant layer 25 and an outer protective layer 26 from the inside to the outside, and the cable core 1 is arranged on In the first insulating layer 21, the flame-retardant layer 24 is filled with flame-retardant fillers, and a first insulating layer 271 and a second insulating layer 272 are arranged between the first insulating layer 21 and the second insulating layer 23. The first ...

Embodiment 2

[0046] The difference from Example 1 is that the flame retardant filler includes the following components in parts by weight: 3 parts of aluminum hydroxide, 1 part of magnesium chloride, 1 part of basalt fiber, 1 part of zinc borate, 3 parts of talc, 5 parts of polyphosphoric acid and 10 parts silicate.

Embodiment 3

[0048] The difference from Example 1 is that the flame retardant filler includes the following components in parts by weight: 10 parts of aluminum hydroxide, 5 parts of magnesium chloride, 5 parts of basalt fiber, 3 parts of zinc borate, 1 part of talc, 1 part of polyphosphoric acid and 5 parts silicate.

[0049] At present, the highest flame retardant grade in the market is Class A flame retardant. Its non-metallic material capacity is 7L / m, the flame temperature is 815°C, the burning time is 40min, and the carbonization height is not greater than 2.5m.

[0050] When the circuits of Examples 1-3 were subjected to the flame retardant test, the experimental results were shown in Table 1:

[0051] Table 1. Flame retardant properties of Examples 1-3.

[0052] Flame temperature / ℃ Burning time / min Carbonization height / m Oxygen Index / % Example 1 850 60 0.8 45.3 Example 2 850 60 1.2 36.1 Example 3 850 60 1.4 39.7

[0053] It can be s...

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Abstract

The present invention relates to the technical field of cable equipment, and discloses a copper-clad aluminum conductor low-smoke halogen-free class A flame-retardant power cable, which includes a cable body, the cable body includes an outer protective sheath and a cable core, and the outer protective sheath is composed of It includes a first insulation layer, a metal shielding layer, a second insulation layer, a flame-retardant layer, a corrosion-resistant layer and an outer protective layer from the inside to the outside. The cable core is arranged in the first insulation layer, and the flame-retardant layer is filled with flame-retardant Filler, the flame retardant filler includes the following components in parts by weight: 3-10 parts of aluminum hydroxide, 1-5 parts of magnesium chloride, 1-5 parts of basalt fiber, 1-3 parts of zinc borate, 1-3 parts of talcum powder , 1-5 parts of polyphosphoric acid and 5-10 parts of silicate, the present invention has a good flame retardant effect, and can timely alarm when the ambient temperature of the cable is too high.

Description

technical field [0001] The invention relates to the technical field of cable equipment, in particular to a low-smoke, halogen-free Class A flame-retardant power cable with a copper-clad aluminum conductor. Background technique [0002] At present, with the continuous improvement of the level of science and technology, the application range of medium-voltage flame-retardant cables is becoming wider and wider, and there are more and more laying places. In the past, most medium-voltage flame-retardant cables were made of flame-retardant and wrapping and sheath To achieve the flame retardant effect, but this effect is far from being applicable to the current development trend. [0003] The combustion of wires and cables is due to the flammable gas produced by external heating. To achieve the purpose of flame retardancy, the three elements that cause combustion must be suppressed, namely: flammable gas, heat and oxygen. Therefore, the general method used for flame-retardant wire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/295H01B7/32H01B7/42H01B9/00H01B9/02
CPCH01B7/295H01B9/00H01B9/024H01B7/421H01B7/324Y02A30/14
Inventor 郭智昊
Owner 郭智昊