Aluminum alloy cable

A technology of aluminum alloy and aluminum alloy conductors, which is applied in the direction of insulated cables, bendable cables, cables, etc., can solve the problems of electrochemical corrosion at the joints, uneven bolt materials, and small bolt pressing force, etc., to achieve electrical conductivity Excellent performance, no memory effect, and improved elongation

Inactive Publication Date: 2013-10-30
SHANGHAI XINYI ELECTRICAL CIRCUIT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: poor creep resistance, thermal expansion and contraction caused by power-on and power-off will cause creep at the joint, and it will relax after a long time, the relative compression force of the bolt will become smaller, and the contact resistance will increase, causing overheating , resulting in an accident
The material of the bolts connecting the terminals to the equipment or the busbar is uneven, even iron bolts, the expansion coefficient of the metal material is different, and the spring washer is not installed during installation, which will cause the air to enter and form an oxide film, which will increase the contact resistance and reduce the contact resistance. Overheating is also a hazard
The terminals used for pure aluminum cables are not specially treated, and the connection with copper bars may cause electrochemical corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A three-core aluminum alloy cable with a structure such as figure 1 As shown, it includes tape 2, sheath 1, insulated wire core and filler 5. The sheath 1 is wrapped outside the tape 2, the insulated wire core is arranged inside the tape 2, and the filler 5 is arranged between the insulated wire core and the bag. In the gap between the strips 2, the insulated wire core is composed of an aluminum alloy conductor 3 and an insulating layer 4 wrapped around the aluminum alloy conductor 3. There are three insulated wire cores. Aluminum alloy conductor 3 is 8030 aluminum alloy conductor material. The 8030 aluminum alloy conductor includes the following components by weight:

[0024]

[0025] The balance is aluminum and unavoidable other elements, and the total content of other elements is 0.20.

[0026] The resistivity of aluminum alloy conductor 3 is 61%IACS, the tensile strength in soft state is 56-111Mpa, the density is 2.71g / cm3, the elongation is 15-25%, and the an...

Embodiment 2

[0028] A four-core aluminum alloy cable with a structure such as figure 2 As shown, it includes tape 2, sheath 1, insulated wire core and filler 5. The sheath 1 is wrapped outside the tape 2, the insulated wire core is arranged inside the tape 2, and the filler 5 is arranged between the insulated wire core and the bag. In the gap between the strips 2, the insulated wire core is composed of an aluminum alloy conductor 3 and an insulating layer 4 wrapped around the aluminum alloy conductor 3. There are four insulated wire cores. Aluminum alloy conductor 3 is 8030 aluminum alloy conductor material.

[0029] The 8030 aluminum alloy conductor includes the following components by weight:

[0030]

[0031] The balance is aluminum and unavoidable other elements, and the total content of other elements is 0.20.

[0032] The resistivity of aluminum alloy conductor 3 is 61%IACS, the tensile strength in soft state is 56-111Mpa, the density is 2.71g / cm3, the elongation is 15-25%, an...

Embodiment 3

[0034] An aluminum alloy cable with a structure such as figure 1 As shown, the product model specification is YJLHV-1kV 3*35mm2; main process parameters: 1. Aluminum alloy conductor structure: 1+6+12 / 19 wires / single wire diameter 2.53mm; 2. The thickness of the cross-linked polyethylene insulating layer : 1.0mm; 3. Tape: (number of layers*thickness) 2*0.2; 4. Sheath thickness: 1.8mm.

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Abstract

The invention relates to an aluminum alloy cable including an armor tape, a jacket, an insulation wire core and filling material. An outer of the armor tape is wrapped with the jacket. The insulation wire core is arranged in the armor tape. The filling material is disposed in a gap between the armor tape and the insulation wire core. The insulation wire core is made of an aluminum alloy conductor and an insulation layer wrapping the aluminum alloy conductor. The aluminum alloy conductor is an 8030 aluminum alloy conductor. Compared with the prior art, the aluminum alloy cable has the advantages of high conductivity, high creep and compaction resistance, high tensile strength, high yield strength, high elongation, small springback value, no memory effect, easy installation and the like.

Description

technical field [0001] The invention relates to a cable, in particular to an aluminum alloy cable. Background technique [0002] The aluminum cable used in my country's construction industry is made of pure aluminum. Its disadvantages are: poor creep resistance, thermal expansion and contraction caused by power-on and power-off will cause creep at the joint, and it will relax after a long time, the relative compression force of the bolt will become smaller, and the contact resistance will increase, causing overheating , resulting in an accident. The material of the bolts connecting the terminals to the equipment or the busbar is uneven, even iron bolts, the expansion coefficient of the metal material is different, and the spring washer is not installed during installation, which will cause the air to enter and form an oxide film, which will increase the contact resistance and reduce the contact resistance. Overheating is also a hazard. The terminals used for pure aluminum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/04H01B7/17H01B7/18
Inventor 沈顺良任正三
Owner SHANGHAI XINYI ELECTRICAL CIRCUIT EQUIP
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