Product Description
Fan shaped aluminum alloy stranded wire is made by using aluminum alloy material as a conductor, processing it into a fan-shaped cross-section, and then using the twisting process to produce stranded wire. This type of wire has a high space utilization rate and can achieve a larger conductive cross-sectional area in a limited space, thereby improving power transmission capacity.
Usually made up of multiple aluminum alloy monofilaments twisted together. According to different conductor specifications, the number and arrangement of single wires also vary.
High strength: Aluminum alloy material itself has a certain strength. After special treatment, the core of fan-shaped aluminum alloy stranded wire can withstand large tension and is suitable for various complex overhead transmission environments.
Good conductivity: Although the conductivity of aluminum alloy is slightly lower than that of pure aluminum, through reasonable alloy composition design, the conductivity of fan-shaped aluminum alloy stranded wire can meet the requirements of power transmission and effectively reduce losses during power transmission.
Excellent corrosion resistance: A dense oxide film is formed on the surface of aluminum alloy, which can resist corrosion from the external environment and operate stably in harsh environments such as coastal areas and industrial pollution areas.
DC resistance: As shown in the technical parameter table above, different specifications of fan-shaped aluminum alloy stranded wires have corresponding maximum DC resistance values at 20 ℃, which can ensure that the energy loss during power transmission is within a reasonable range.
Current carrying capacity: The current carrying capacity of fan-shaped aluminum alloy stranded wire is related to factors such as conductor specifications, ambient temperature, and laying method.
Sag: During the installation process, it is necessary to determine the sag reasonably based on factors such as the span of the line and the weight of the conductor. Generally, the larger the span, the greater the sag to ensure the safe operation of the conductor under different climatic conditions.
Tension: During construction, it is necessary to control the tension of the wire to avoid damage caused by excessive tension or excessive sag caused by insufficient tension. The tension of fan-shaped aluminum alloy stranded wire is usually controlled between 40% and 60% of its rated tensile strength.
Overhead power lines: are the main application areas of fan-shaped aluminum alloy stranded wires, which can be used for the renovation and construction of urban overhead lines, as well as power transmission in rural areas, to improve the reliability and stability of power supply.
Indoor wiring: In some indoor places with high space requirements, such as large shopping malls, office buildings, etc., fan-shaped aluminum alloy stranded wire can take advantage of its cross-sectional shape to facilitate wiring installation and save space.
Special environmental applications: in some harsh environments, such as high-altitude areas, desert areas, etc
|
Nominal Cross Section |
Center Wire |
Conductor Structure |
First Layer |
Second Layer |
Third Layer |
Fourth Layer |
Control Cross Section |
Weight Per Meter |
Standard Resistance |
Resistance before annealing |
||||||
|
mm |
mm |
Mold |
Pitch |
Mold |
Pitch |
Mold |
Pitch |
Mold |
Pitch |
Sash Height |
Aluminum≥ |
≤g/m |
≤Ω/km |
≤Ω/km |
||
|
185 |
37/2.54 |
1+6+12+18 |
7.6 |
140 |
13 |
192 |
22 |
185-215 |
/ |
/ |
13.5-13.8 |
183 |
494 |
0.164 |
0.1624 |
|
|
240 |
48/2.54 |
3+9+15+21 |
10.6 |
190 |
16 |
245 |
26 |
215-235 |
/ |
/ |
15.2—15.5 |
237 |
640 |
0.125 |
0.1238 |
|
|
300 |
61/2.54 |
1+6+12+18+24 |
7.6 |
140 |
13 |
192 |
20 |
225-255 |
30 |
245-265 |
16.9--17.1 |
297 |
802 |
0.1 |
0.099 |
|
|
Process Requirements: 1. Conduct mutual inspection of the conductors drawn in the previous process to avoid using the wrong single conductor. Pay attention to tension control during stranding to prevent the single conductor from being stretched too thin, which would cause the conductor's DC resistance to exceed the standard. 2. The conductor structure, stranding direction, and strand pitch should meet the process requirements. The stranding should be tight, with the outermost layer stranded to the left, and adjacent strands in opposite directions. The conductor surface should be smooth, flat, free of oil stains, and free of broken roots, cracks, and mechanical damage. 3. Soldering is permitted on single stranded conductors, but the distance between two joints within the same layer should be no less than 300mm, and the distance between two joints on the same single conductor should be no less than 15mm. Joints should be smooth and rounded. 4. The stranding of the wires must be neat and uniform, and the distance between the outermost strand and the edge of the spool should be no less than 50mm. 5. Strictly follow the process and ensure that the conductor's electrode anode, weight per meter, and outer diameter meet the requirements before continuing production. |
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