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This section deals with heat-treatable magnesium silicon type aluminium alloys to the applicable International Standard, the electrical and mechanical properties of which all fall within the values suggested by relevant standard. Conductors to all other recognized specifications can also be supplied.
Application
AAAC is used as a bare overhead conductor for power transmission and distribution lines, on aerial circuits that require a larger mechanical resistance than AAC, and a better corrosion resistance than ACSR. The sag characteristics and the strength-to-weight ratio of AAAC is better than both AAC / ACSR.
Standards
Basic design to BS 3242 / BS EN 50182 / IEC 61089 / ASTM B 399/B 399M / DIN 48201-6 standards
category:Bare Conductor
Cable Construction
AAAC cable consists of aluminum alloy wires. The aluminum alloy wires are concentrically stranded.
This section deals with heat-treatable magnesium silicon type aluminium alloys to the applicable International Standard, the electrical and mechanical properties of which all fall within the values suggested by relevant standard. Conductors to all other recognized specifications can also be supplied. The alloys referred to have higher strength but lower conductivity than pure aluminium. Being lighter, alloy conductors can sometimes be used to advantage in place of the more conventional ACSR; Having lower breaking loads than the later, their use becomes particularly favorable when ice and wind loadings are low.
Electrical Properties
| Density@20ºC | 2.703 kg/dm |
| Temperature Coefficient@20°C | 0.00403 (°C) |
| Resistivity@20°C | 0.028264 |
| Linear Expansivity | 23 x10-6 (°C) |
Service Conditions
| Ambient Temperature | -5°C - 50°C |
| Wind Pressure | 80 – 130kg/m2 |
| Seismic Acceleration | 0.12 - 0.05g |
| Isokeraunic Level | 10 – 18 |
| Relative Humidity | 5 – 100% |
| Density@20ºC | 2.703 kg/dm |
| Temperature Coefficient@20°C | 0.00403 (°C) |
| Resistivity@20°C | 0.028264 |
| Linear Expansivity | 23 x10-6 (°C) |
All Aluminum Alloy Conductors (AAAC) -IEC 61089 Standard
|
Nominal cross-sectional area |
Actual cross-sectional area |
Number of strands |
Diameter |
Approximate weight of cable |
Nominal breaking load |
Maximum DC Resistance at 20℃ |
|
| Single wire | Conductor | ||||||
| mm² | mm² | mm | mm | kg/km | kN | Ω/km | |
| 16 | 18.4 | 7 | 1.83 | 5.49 | 50.4 | 5.43 | 1.7896 |
| 25 | 28.8 | 7 | 2.29 | 6.86 | 78.7 | 8.49 | 1.1453 |
| 40 | 46.0 | 7 | 2.89 | 8.68 | 125.9 | 13.58 | 0.7158 |
| 63 | 72.5 | 7 | 3.63 | 10.9 | 198.3 | 21.39 | 0.4545 |
| 100 | 115 | 19 | 2.78 | 13.9 | 316.3 | 33.95 | 0.2877 |
| 125 | 144 | 19 | 3.10 | 15.5 | 395.4 | 42.44 | 0.2302 |
| 160 | 184 | 19 | 3.51 | 17.6 | 506.1 | 54.32 | 0.1798 |
| 200 | 230 | 19 | 3.93 | 19.6 | 632.7 | 67.91 | 0.1439 |
| 250 | 288 | 19 | 4.39 | 22.0 | 790.8 | 84.88 | 0.1151 |
| 315 | 363 | 37 | 3.53 | 24.7 | 998.9 | 106.95 | 0.0916 |
| 400 | 460 | 37 | 3.98 | 27.9 | 1268.4 | 135.81 | 0.0721 |
| 450 | 518 | 37 | 4.22 | 29.6 | 1426.9 | 152.79 | 0.0641 |
| 500 | 575 | 37 | 4.45 | 31.2 | 1585.5 | 169.76 | 0.0577 |
| 560 | 645 | 61 | 3.67 | 33.0 | 1778.4 | 190.14 | 0.0516 |
| 630 | 725 | 61 | 3.89 | 35.0 | 2000.7 | 213.90 | 0.0458 |
| 710 | 817 | 61 | 4.13 | 37.2 | 1154.8 | 241.07 | 0.0407 |
| 800 | 921 | 61 | 4.38 | 39.5 | 2540.6 | 271.62 | 0.0361 |
| 900 | 1036 | 91 | 3.81 | 41.8 | 2861.1 | 305.58 | 0.0321 |
| 1000 | 1151 | 91 | 4.01 | 44.1 | 3179.0 | 339.53 | 0.0289 |
| 1120 | 1289 | 91 | 4.25 | 46.7 | 3560.5 | 380.27 | 0.0258 |
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