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Core advantages of steel core aluminum stranded wire (ACSR): Strong steel core, aluminum wire guide, light, energy-saving, durable, and stable, perfect for high-voltage overhead transmission.
I. Mechanical strength full
- Steel core tensile strength: Galvanized steel core provides ultra-high tensile strength (1200-1400MPa), resistance to strong wind, ice, self-weight, large span without collapse line
- Larger range: The distance between poles and towers can be increased (normally 50-200 m, specially more than 500 m), reducing the number of towers and reducing the cost
- Low thermal expansion: Smaller sagging than pure aluminum wire, less deformation at high temperature
Second, high conductivity and no waste
- Skin effect: The high-voltage current goes through the outer aluminum wire, and the steel core does not affect the conductivity
- Aluminum wire has good conductivity: The conductivity of aluminum is about 61% that of copper, but it is light, cheap, and easy to process
- Good heat dissipation: The bare wire dissipates heat quickly, with high current carrying capacity and low loss
3. High cost-effectiveness
- Light weight: The density of aluminum is only 1/3 of copper, which is 40% lighter than that of copper cables, reducing the load of the tower and foundation
- Low cost: Aluminum + steel is much lower than copper cables, and manufacturing, installation, and maintenance are all cheap
- Simple structure: The bare wire is not insulated, and the construction is fast and the maintenance is easy
4. Strong environmental adaptability
- Corrosion resistance: The aluminum surface forms a dense oxide film, the galvanized steel core is rust-proof, and it is resistant to moisture, salt and alkali, and industrial corrosion
- Wide temperature range: Long-term 90 °C, short-term 180 °C, high temperature still maintain strength
- All-weather: resistant to high temperature, low temperature, wind and sand, rain and snow, suitable for long distance outdoors
V. Friendly engineering and O&M
- Cross the barrier
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