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Aluminum Alloy Conductor (AAAC) Technical Specifications
| Aluminum Alloy Conductor (AAAC) | |||||||
|---|---|---|---|---|---|---|---|
| Code Name | Sectional Area | Wire Diameter & Stranding | Diameter of Conductor | Nominal Breaking Load | Linear Mass | Maximum Resistance at 20℃ | |
| mm² | mm | No. | mm | kN | kg/km | Ω/km | |
| Chlorine | 34.36 | 2.5 | 7 | 7.5 | 8.18 | 94.1 | 0.864 |
| Chromium | 41.58 | 2.75 | 7 | 8.25 | 9.91 | 113.9 | 0.713 |
| Fluorine | 49.48 | 3 | 7 | 9 | 11.8 | 135.5 | 0.599 |
| Helium | 77.31 | 3.75 | 7 | 11.25 | 17.6 | 211.7 | 0.383 |
| Hydrogen | 111.33 | 4.5 | 7 | 13.5 | 24.3 | 304.9 | 0.266 |
| Iodine | 124.04 | 4.75 | 7 | 14.25 | 27.1 | 339.7 | 0.239 |
| Krypton | 157.62 | 3.25 | 19 | 16.25 | 37.4 | 433.7 | 0.189 |
| Lutetium | 182.80 | 3.5 | 19 | 17.5 | 41.7 | 503.0 | 0.163 |
| Neon | 209.85 | 3.75 | 19 | 18.75 | 47.8 | 577.4 | 0.142 |
| Nitrogen | 261.54 | 3 | 37 | 21 | 62.2 | 721.4 | 0.114 |
| Nobelium | 306.94 | 3.25 | 37 | 22.75 | 72.8 | 846.6 | 0.0973 |
| Oxygen | 336.69 | 4.75 | 19 | 33.25 | 73.6 | 928.6 | 0.0884 |
| Phosphorus | 408.65 | 3.75 | 37 | 26.25 | 93.1 | 1127.1 | 0.0731 |
| Selenium | 506.04 | 3.25 | 61 | 29.25 | 114 | 1398.5 | 0.0592 |
| Silicon | 586.89 | 3.5 | 61 | 31.5 | 127 | 1621.9 | 0.0511 |
| Sulfur | 673.73 | 3.75 | 61 | 33.75 | 145 | 1861.9 | 0.0444 |
Note: The outermost layer is twisted to the right (Z).
Frequently Asked Questions (FAQ)
What does AAAC stand for and what is it used for?
AAAC stands for Aluminum Alloy Conductor. It is designed using a high-strength aluminum alloy to achieve a high strength-to-weight ratio and improved electrical properties. It is primarily used for overhead power transmission and distribution lines.
What is the standard twisting direction for the outermost layer of AAAC?
According to the standard specifications, the outermost layer of the Aluminum Alloy Conductor (AAAC) is twisted to the right, which is designated as a (Z) lay direction.
How does conductor size affect its electrical resistance at 20℃?
The maximum electrical resistance is inversely proportional to the sectional area of the conductor. As the sectional area increases (e.g., from 34.36 mm² for Chlorine to 673.73 mm² for Sulfur), the maximum resistance at 20℃ drops significantly from 0.864 Ω/km down to 0.0444 Ω/km.
Which AAAC conductor code offers the highest nominal breaking load?
Based on the specifications table, the "Sulfur" code name conductor offers the highest nominal breaking load of 145 kN, corresponding to its large sectional area of 673.73 mm² and a 61-wire stranding configuration.
What are the common stranding wire configurations for AAAC?
AAAC conductors are manufactured in various stranding wire configurations depending on the design load and area requirements. Common wire structures include 7 wires (e.g., Chlorine, Hydrogen), 19 wires (e.g., Krypton, Neon), 37 wires (e.g., Nitrogen, Phosphorus), and 61 wires (e.g., Selenium, Sulfur).