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AAAC (All Aluminum Alloy Conductors)

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.

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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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