Aluminium Conductor Steel Reinforced

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ACSR (Aluminium Conductor Steel Reinforced)

It’s a bimetallic conductors. The inner layers are composed by steel wires and the external layers are composed by hard-drawn aluminium AA1350-H19. The steel wires guarantee high mechanical performances.
This kind of conductor is used for medium and long spans thanks to the high value of specific mechanical resistance and good transport capacity.
The steel section will change to obtain the RTS requested. The modulus of elasticity of single steel wire is three time greater than an aluminium single wire. The final modulus of elasticity is defined by the composition of ACSR conductor (number of steel wires, number of aluminium wires).
The same behaviour will be found for the coefficient of linear expansion. The final value is determined by the single value of the material used and the modulus of elasticity and the section of the two components.
To guarantee the protection of steel, a thin zinc coating on the wire is carried out. The zinc coating is important to prevent the galvanic corrosion.
ACSR conductors has always been given high reliability thanks for the presence of steel that ensures the conductor large safety margins.


Aluminium Conductor Steel Reinforced

ACSR conductor CSA C49 standard


ACSR conductor( Aluminum Conductor Steel Reinforced) are suitable for use in all practical spans on wood poles, transmission towers,and other structures. Application range from extra high voltage(EHV) transmission lines to sub-service spans at distribution or utilization voltages on private premises.
ACSR conductor has a long service record because of its economy ,dependability, and strength to weight ratio. The combined light weight and high conductivity of aluminum with strength of the steel cores enable higher tensions ,less sag,and longer spans than any alternative.


ACSR conductor are formed by several wires of aluminium and galvanized steel, stranded in concentric layers. The wire or wires which form the core, are made of galvanized steel and the external layer or layers, are of aluminium. Galvanized steel core consist normally of 1, 7 or 19 wires. The diameters of steel and aluminium wires can be the same, or different. The additional corrosion protection is available through the application of grease to the cores or infusion of the complete cable with grease.
By varying the relative proportions of aluminium and steel, the required characteristics for any particular application can be reached.

SPECIFICATION:DIN 48204, NIS 234,BS 215 Part 2:1970

Number and Diameter of Wire Approx
MM2 Alu Steel MM
16/2.5 6X1.80 1X1.80 5.4
25/4 6X2.25 1X2.25 6.8
26/4 6X2.36 1X2.36 7.1
35/6 6X2.70 1X2.70 8.1
30/5 6X2.59 1X2.59 7.8
50/8 6X3.20 1X3.20 9.6
52/8 6X3.35 1X3.35 10.1
70/12 26X1 85 7X1.44 11.7
70/42 12X2.79 7X2.79 14
95/15 26X2.15 7X1.67 13.6
100/15 6X4.72 7X1.57 14.2
120/20 26X2.44 7X1.90 15.5
150/25 26X2.70 7X2.10 17.1
150/35 30X2.59 7X2.59 18.1
175/40 30X2.79 7X2.79 19.5
185/30 26X3.00 7X2.33 19
200/50 30X3.00 7X3.00 21
240/40 26X3.45 7X2.68 21.9
264/22 30X3.35 7X3.35 23.5
382/50 54X3.00 7X3.00 27
429/100 30X4.27 7X4.27 29.9



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Aluminium Conductor Steel Reinforced

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