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In the power transmission and distribution system, it can be used not only as the reinforcing core of the wire, but alsoas the ground wire. Especially in the large-span project, the application of aluminum-clad steel (ACS) strands withdifferent conductivity shows its advantages.
ACS is used to replace steel-cored aluminum stranded wires on high-voltage transmission lines.
1) ACSR/AW (AS wire reinforced aluminum conductor)
2) TACR/AW (heat-resistant aluminum alloy ACSR/AW for large-capacity power transmission lines)
Aluminum rod: Straightening-> Cleaning-> Drying
Steel Core: Straightening-> Degreasing, descaling and cleaning->Preheating
Combination of Aluminum rod and Steel core: continuous co-extrusion->Aluminum cladding->Cooling->Aluminum-cladding steel wire->Take-up
| No. | Item | Al stranding wire | Al alloy stranding wire | Steel core Al stranding wire | Al cladding steel stranding wire |
|---|---|---|---|---|---|
| 1 | Corrosion resistance | ☆☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆☆ |
| 2 | Tensile strength | ☆☆ | ☆☆ | ☆☆☆ | ☆☆☆☆ |
| 3 | Conductivity | ☆☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆☆ |
| 4 | Current-carrying creep elongation | ☆☆ | ☆☆ | ☆☆☆ | ☆☆☆☆ |
| 5 | Weight | ☆☆☆☆ | ☆☆☆☆ | ☆☆☆ | ☆☆☆☆ |
| 6 | Sag characteristics with the same safety factor for wire breakage | ☆☆ | ☆☆ | ☆☆☆ | ☆☆☆☆ |
| 7 | Span | ☆☆ | ☆☆ | ☆☆☆ | ☆☆☆☆ |
