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High tension Cables Aluminium

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Un-Armoured 1 Core-LT(Aluminium)

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HAVELLS Cables Price List w.e.f July 2014 (VIEW)      HAVELLS Customer Care No:+91-120-4771000

KEI Cables Price List w.e.f July 2014 (VIEW)                 KEI Customer Care No:022-282375642​.

POLYCAB Cables Price List w.e.f July 2014 (VIEW)      POLYCAB Customer Care No:18002670008

Introduction of Aluminium Cables

Aluminium Cables are also called Aluminium conductor steel-reinforced (ACSR).

Aluminium conductor steel-reinforced (ACSR) is a specific type of high-capacity, high-strength stranded conductor typically used in overhead power lines. The outer strands are high-purity 1350 or 1370 aluminium alloy, chosen for its excellent conductivity, low weight and low cost. The center strands are of steel for the strength required to support the weight without stretching the aluminium due to its ductility. This gives the conductor an overall high tensile strength.

By what other names are Aluminium Conductors known

AAC, AAAC, ACSR are also known as Overhead Conductors, Transmission Conductors and Power Distribution Conductors. AAC is also known as aluminium stranded conductor. These cables can also be recognised by their full names of

All Aluminium Conductor (AAC)

All Aluminium Alloy Conductor (AAAC) 

Aluminium Conductor Steel Reinforced (ACSR)

What are Aluminium Conductors used for

Aluminium Conductors are predominantly used in Overhead Line applications and for primary and secondary power distribution. 

The higher strength ACSR conductors are used for river crossings, overhead earth wires, and installations involving extra long spans. The advantage of ACSR is that it has high tensile strength and is lightweight, which means over longer spans it needs less supports. ACSR is available with varying percentages of steel core to achieve different strengths. One of the advantages of this conductor in particular is that the desired strength can be achieved without a loss of ampacity. 

AAC is used mainly in urban areas where the spacing is short and the supports are closer together. The advantage of AAC conductors is that they have a high degree of corrosion resistance; for this reason they are used extensively in coastal areas. AAC Conductors were developed as a consequence of the galvanic corrosion that ACSR conductors are susceptible to. 

AAAC is used as bare overhead conductor for power transmission and distribution lines on aerial circuits that require larger mechanical resistance than AAC. AAAC also has better sag characteristics and a better strength to weight ratio than AAC. AAAC Cables have lower weight per unit length and slightly lower resistance per unit length than ACSR.

What is the diffrence between ACSR,AAC and AAAC Conductors

The biggest difference between AAC, AAAC, and ACSR conductors are the materials they are constructed from. AAC is manufactured from electrolytically refined aluminium with a 99.7% minimum purity, AAAC is made from an Aluminium alloy, and ACSR contains a combination of Aluminium reinforced with Steel. 

The second factor that differentiates the three cables is their resistance to corrosion, which is important for the longevity of the cable. ACSR has a poorer resistance to corrosion, as it contains steel, which is prone to rust. AAAC and AAC have a better corrosion resistance, due to the fact that they are largely or completely aluminium. 

In an ACSR the galvanised steel core carries the mechanical load and the high purity aluminium carries the current. These utilise the lower thermal expansion coefficient of steel compared to aluminium, which the aluminium based conductors AAC and AAAC are unable to do.


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Havells Cables , Kei Cables , Polycab Cables