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Aluminum Conductor Steel Reinforced (ACSR) Cables

Aluminum Conductor Steel Reinforced (ACSR) Cables

Application

ACSR conductors are widely used for electrical power transmission over long distances, since they are ideal for long overhead lines spans. They are also used as a messenger for supporting overhead electrical cables.

Standard

Basic design to BS 215-2 / BS EN 50182 / IEC 61089 / ASTM B 232/B 232M / DIN 48204 / JIS C 3110 standards

Construction

ACSR conductors 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.

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.

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)


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