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ACSR conductors are widely used for electrical power transmission over long distances.
ACSR conductors are formed by several wires of aluminium and galvanized steel, stranded in concentric layers.
Basic design to BS 215-2 / BS EN 50182 / IEC 61089 / ASTM B 232/B 232M / DIN 48204 / JIS C 3110 standards.
ACSR Parameter American ASTM B232 standard.pdf
ACSR Parameter British BS215-2 Standard.pdf
ACSR Parameter British Europe BS EN 50182 Standard.pdf
ACSR Parameter German DIN48204 Standard.pdf
ACSR Parameter IEC 61089 Standard.pdf
ACSR Parameter Japan JIS C3110 Standard.pdf
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ACSR-Aluminum Conductor Steel Reinforced are also used as a messenger for supporting overhead electrical cables.
ACSR-Aluminum Conductor Steel Reinforced 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.
By varying the relative proportions of aluminium and steel, the required characteristics for any particular application can be reached. A higher U. T. S. Can be obtained, by increasing steel content, and a higher current carrying capacity by increasing aluminium content.
ACSR-Electrical Properties
Density@20oC | Aluminium: 2.703 kg/dm |
Galvanised Steel: 7.80 kg/dm | |
Temperature Coefficient@20°C | Aluminium: 0.00403 (°C) |
Resistivity@20°C | Aluminium: Should not exceed 0.028264 |
Linear Expansivity | Aluminium: 23 x10 (°C) |
Galvanised Steel: 11.5 x10 (1/°C) |
ACSR-Service Conditions
Ambient Temperature | -5°C - 50°C |
Wind Pressure | 80 – 130kg/m^2 |
Seismic Acceleration | 0.12 - 0.05g |
Isokeraunic Level | 10 – 18 |
Relative Humidity | 5 – 100% |
ACSR-Final Modules of Elasticity-Coeficient of linear Expansion
Numbers of Wires | Final Modules of Elasticity | Coeficient of linear Expansion | |||
AL | Steel | Kg/mm^2 | lb/in^2 | 1/Co | 1/Fo |
6 | 1 | 81 | 11.5 x106 | 19.1 x10-6 | 10.6 x10-6 |
6 | 7 | 77 | 11.0 x106 | 19.8 x10-6 | 11.0 x10-6 |
12 | 7 | 107 | 15.2 x106 | 15.3 x10-6 | 8.5 x10-6 |
18 | 1 | 67 | 9.5 x106 | 21.2 x10-6 | 11.8 x10-6 |
24 | 7 | 74 | 10.5 x106 | 19.6 x10-6 | 10.9 x10-6 |
26 | 7 | 77 | 10.9 x106 | 18.9 x10-6 | 10.5 x10-6 |
28 | 7 | 79 | 11.2 x106 | 18.4 x10-6 | 10.2 x10-6 |
30 | 7 | 82 | 11.6 x106 | 17.8 x10-6 | 9.9 x10-6 |
30 | 19 | 80 | 11.4 x106 | 18.0 x10-6 | 10.0 x10-6 |
32 | 19 | 82 | 11.7 x106 | 17.5 x10-6 | 9.7 x10-6 |
54 | 7 | 70 | 9.9 x106 | 19.3 x10-6 | 10.7 x10-6 |
54 | 19 | 68 | 9.7 x106 | 19.4 x10-6 | 10.8 x10-6 |
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