AAAC is mainly used as bare overhead transmission cable and as primary and secondary distribution cable. It is also suitable for laying across basins, rivers and valleys where special geographical textures exist
STANDARD
Basic design to BS 3242 standard.
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 favourable when ice and wind loadings are low.
ELECTRICAL PROPERTIES
Density@20ºC | 2.70 kg/dm |
Temperature Coefficient@20°C | 0.00360 (°C) |
Resistivity@20°C | 0.0326 Ohms mm2 /m |
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% |
CONSTRUCTION PARAMETERS
Code | Stranding | Nominal | Overall | Weight | Rated | Electrical | Current |
Area | Diameter | Strength | Resistance | Rating* | |||
No.×mm | mm2 | mm | kg/km | KN | Ω/Km | A | |
Box | 7/1.85 | 18.8 | 5.55 | 51.4 | 5.55 | 1.748 | 87 |
Acacia | 7/2.08 | 23.8 | 6.24 | 64.9 | 7.02 | 1.3828 | 101 |
Almond | 7/2.34 | 30.1 | 7.02 | 82.2 | 8.88 | 1.0926 | 116 |
Cedar | 7/2.54 | 35.5 | 7.62 | 96.8 | 10.46 | 0.9273 | 129 |
Deodar | 7/2.77 | 42.2 | 8.31 | 115.2 | 12.44 | 0.7797 | 143 |
Fir | 7/2.95 | 47.8 | 8.85 | 130.6 | 14.11 | 0.6875 | 155 |
Hazel | 7/3.30 | 59.9 | 9.9 | 163.4 | 17.66 | 0.5494 | 178 |
Pine | 7/3.61 | 71.6 | 10.83 | 195.6 | 21.14 | 0.4591 | 199 |
Holly | 7/3.91 | 84.1 | 11.73 | 229.5 | 24.79 | 0.3913 | 219 |
Willow | 7/4.04 | 89.7 | 12.12 | 245 | 26.47 | 0.3665 | 228 |
Oak | 7/4.65 | 118.9 | 13.95 | 324.5 | 35.07 | 0.2767 | 272 |
Mulberry | 19/3.18 | 150.9 | 15.9 | 414.3 | 44.52 | 0.2192 | 314 |
Ash | 19/3.48 | 180.7 | 17.4 | 496.1 | 53.31 | 0.183 | 351 |
Elm | 19/3.76 | 211 | 18.8 | 579.2 | 62.24 | 0.1568 | 386 |
Poplar | 37/2.87 | 239.4 | 20.09 | 659.4 | 70.61 | 0.1387 | 416 |
Sycamore | 37/3.23 | 303.2 | 22.61 | 835.2 | 89.4 | 0.1095 | 480 |
Upas | 37/3.53 | 362.1 | 24.71 | 997.5 | 106.82 | 0.0917 | 535 |
Yew | 37/4.06 | 479 | 28.42 | 1319.6 | 141.31 | 0.0693 | 633 |
Totara | 37/4.14 | 498.1 | 28.98 | 1372.1 | 146.93 | 0.0666 | 648 |
Rubus | 61/3.50 | 586.9 | 31.5 | 1622 | 173.13 | 0.0567 | 714 |
Sorbus | 61/3.71 | 659.4 | 33.39 | 1822.5 | 194.53 | 0.0505 | 764 |
Araucaria | 61/4.14 | 821.1 | 37.26 | 2269.4 | 242.24 | 0.0406 | 868 |
Redwood | 61/4.56 | 996.2 | 41.04 | 2753.2 | 293.88 | 0.0334 | 970 |