All Aluminium Alloy Conductors (AAAC) are extensively used for primary and secondary transmission in bare overhead distribution and transmission lines (11 kV to 800 kV lines) and HV substations. Also, usable in highly polluted industrial areas and coastal regions due to corrosion resistance.
All Aluminium-Alloy Conductors (AAAC) is a concentric-lay-stranded conductor consisting of aluminium-alloy wires available in both single layer and multi-layer constructions.
All Aluminium-Alloy Conductors (AAAC) can be used in Medium, High and Extra-High voltage transmission lines. AAAC offers better sag performance due to the high strength-to-weight ratio provided by the aluminium-alloy. In addition, AAAC provides a higher corrosion resistance than ACSR conductors.
AAAC has good corrosion resistance, however due to the absence of steel, its resistance is lower than ACSR. AAAC can carry 15-20% extra current and has a higher life span (60 years) as compared to ACSR of equal size (30 years). The surface hardness of AAAC is 80 BHN while ACSR has hardness 35 BHN. This reduces damage to the surface during handling, thereby leading to lesser corona losses and Ratio interference at EHV. AAAC can be operated with stable temperature of 85°C against ACSR conductors which are stable up to 75°C. Since AAAC has higher strength-to-weight ratio, span can be increased by 2-15% resulting in overall reduction of cost in tower supports and other accessories in the transmission line system.
| SR. NO. | DESCRIPTION | RANGE |
|---|---|---|
|
1 |
Conductor Area |
10.6 mm2 to 1095 mm2 |
|
2 |
Conductor construction |
7Al Alloy to 91 Al Alloy |
|
3 |
Conductivity of Al Alloy |
52.5% to 53.0% IACS |
At a temperature of 20°C (68°F), the density of hard-drawn aluminium has been taken as 2.703 g/cm (168.74 lb/cf).
| SR. NO. | DESCRIPTION | RANGE | RANGE | RANGE | RANGE |
|---|---|---|---|---|---|
|
SR. NO. |
CONDUCTOR
CONSTRUCTION |
MODULUS OF ELASTICITY* |
LINEAR COEFFCIENT* |
||
|
MPa |
KSI |
/ºC |
/ºF |
||
|
1 |
7 Strands |
62000 |
8892 |
23 x 10 -6 |
12.8 X 10 -6 |
|
2 |
19 Strands |
60000 |
8702 |
23 x 10 -6 |
12.8 X 10 -6 |
|
3 |
37 Strands |
57000 |
8267 |
23 x 10 -6 |
12.8 X 10 -6 |
|
4 |
61 Strands |
55000 |
7977 |
23 x 10 -6 |
12.8 X 10 -6 |
| SR. NO. | DESCRIPTION | RANGE | |
|---|---|---|---|
|
1 |
Permissible Temp in continuous operation |
85°C |
185°F |
|
2 |
Temp in a short circuit (duration up to 5s) |
200°C |
392°F |
Note: The Catalogue conductor Parameter are informative and can be customized as per Project Requirements
All Aluminium Alloy Conductor (AAAC) can be supplied to meet various National & International Standards as follows.
IS 398 PART 4 : 1994 | BS 3242 | IEC 61089 : 1991 | BS EN 50182 : 2001 | ASTM B 399 | AS 1531 : 1989 | DIN 48201 Part 6
Quality is not an act, it's a habit. At Lumino, quality has always been a journey and not a destination. At Lumino, quality control checks exist at every stage-right from procuring raw materials to the end product.
