STER-ACSR

Aluminium Conductors Steel Reinforced (ACSR), also known as Bare aluminium conductors, are one of the most widely used conductors for transmission. The conductor consists of one or more layers of aluminium wires stranded over a high strength steel core that can be single or multiple strands depending on the requirement. There can be various stranding combinations of Al and steel wires lending flexibility to obtain suitable current carrying capacity and mechanical strength for the application

 
Application
 
Aluminium Clad Steel Reinforced

Aluminium Conductors Steel Reinforced - STER - ACSR™

Overhead T&D lines-MV, HV & EHV (11 kV to 800 kV Lines).

Advantage

Its low weight combined with high tensile strength allows larger span runs. Electrical losses by corona effect are greatly reduced, due to the larger diameter size. Economical transmission and distribution of electrical energy can be achieved by ACSR, at very high voltages and distances.

MANUFACTURING CAPABILITY
SR.NO DESCRIPTION RANGE
01 Conductor Area 10.6mm2 to 1393mm2 0.0164 in2 to 2.1592 in2
02 Conductor construction 6A/ 1 Steel to 84Al/19 Steel
03 Conductivity 61%
PHYSICAL PROPERTIES
At a temperature of 20°C (68°F), the density of hard-drawn aluminium has been taken as 2.703 g/cm3 (168.74 lb/cf) and for steel wire 7.78 g/cm3 (485.69 lb/cf).

 

SR. NO. CONDUCTOR CONSTRUCTION MODOLUS OF ELASTICITY* LINEAR COEFFCIENT*
MPA KSI /OC /OF
01 6Al/1Steel 81000 11748 19.2 X 10-6 10.7 X 10-6
02 6Al/7Steel 75000 10878 19.8 X 10-6 11.0 X 10-6
03 12Al/7Steel 107000 15519 15.3 X 10-6 8.5 X 10-6
04 18Al/1Steel 66000 9572 21.2 X 10-6 11.8 X 10-6
05 24Al/7Steel 74000 10733 19.4 X 10-6 10.8 X 10-6
06 26Al/7Steel 77000 11168 18.9 X 10-6 10.5 X 10-6
07 30Al/7Steel 82000 11893 17.8 X 10-6 9.9 X 10-6
08 26Al/19Steel 76000 11023 19.0 X 10-6 10.5 X 10-6
09 30Al/19Steel 81000 11748 17.9 X 10-6 9.9 X 10-6
10 42Al/1Steel 60000 8702 21.2 X 10-6 11.8 X 10-6
11 45Al/7Steel 61000 8847 20.9 X 10-6 11.6 X 10-6
12 48Al/7Steel 62000 8992 20.5 X 10-6 11.4 X 10-6
13 54Al/7Steel 70000 10153 19.3 X 10-6 10.7 X 10-6
14 54Al/19Steel 68000 9863 19.4 X 10-6 10.8 X 10-6
15 84Al/7Steel 65000 9427 20.1 X 10-6 11.1 X 10-6
16 84Al/19Steel 64000 9282 20.0 X 10-6 11.1 X 10-6
SR. NO. DESCRIPTION RANGE
01 Permissible Temp in continuous operation 85°C 185°F
02 Temp in a short circuit (duration up to 5 s) 200°C 392°F
STANDARDS
IEC, BS, ASTM, CAN-CSA, DIN, IS, AS and relevant national and international standards.
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