ACSR, short for Aluminum Conductor Steel Reinforced, is the most widely‑used bare overhead conductor for power transmission and distribution worldwide. It adopts a composite stranded design, combining excellent electrical conductivity of aluminum and high tensile strength of galvanized steel core. Thanks to its balanced mechanical and electrical performance, ACSR has become the preferred solution for overhead power grid construction in mountainous areas, river‑crossing sections and harsh weather zones.
With rich experience in manufacturing overhead conductors, Hunan Yidong Crosslinked Cable has served numerous key projects including Wuhan Tianhe Airport, Xiangxi Smart Energy Storage Station and Xiangxi Chemical Park, delivering reliable overhead conductor solutions for power grid, new energy and municipal infrastructure projects.
1. Basic Structure of ACSR Conductor
ACSR consists of two core parts: outer aluminum strands and inner galvanized steel core. Multiple layers of high‑purity 1350‑H19 aluminum wires are concentrically stranded around the central steel core. The outer aluminum strands undertake most of the current transmission work, while the galvanized steel core bears main mechanical loads such as tension, wind pressure and ice coating, effectively reducing conductor sag under long‑span conditions. Different aluminum‑to‑steel ratios produce ACSR models with different strength‑ampacity balance for diverse project requirements.
2. Core Advantages of ACSR Conductor
High tensile strength & low sag performance: The galvanized steel core greatly improves tensile capacity, allowing longer span distances between towers. It reduces the number of poles and towers, lowering overall project investment, especially suitable for valleys, rivers and mountain terrains.
Reliable current‑carrying performance: High‑purity aluminum strands deliver stable conductivity and good heat‑dissipation capacity, meeting the power‑transmission demand of medium‑voltage and high‑voltage overhead lines.
Good comprehensive cost‑efficiency: Compared with full‑alloy overhead conductors, ACSR achieves a good balance between performance and cost, which is friendly for large‑scale grid construction projects.
Strong environmental adaptability: Galvanized steel core resists general outdoor weather erosion. Properly installed ACSR can maintain stable operation under wind, ice and temperature fluctuation conditions, with long service life in normal‑environment overhead networks.
3. Main Application Scenarios
– High‑voltage & medium‑voltage overhead transmission and distribution lines, 10kV‑500kV power grid projects;
– Large‑span sections: river crossing, valley crossing, mountain area overhead wiring;
– New‑energy outgoing lines: photovoltaic and wind‑farm overhead power‑delivery circuits;
– Rural power‑grid reconstruction, suburban overhead distribution network upgrading projects.
4. Key Points for ACSR Project Selection
First, confirm the required ampacity according to transmission capacity and voltage level. Second, calculate mechanical load including span length, local wind speed and ice‑coating thickness to select proper aluminum‑steel ratio. Heavy‑ice and strong‑wind regions need higher‑strength steel‑core configuration. For coastal and heavy‑corrosion areas, anti‑corrosion optimized conductor solutions should be adopted instead of ordinary ACSR to avoid premature aging and faults.
5. Installation & Operation Reminders
Avoid dragging ACSR directly on the ground during laying to prevent scratches on aluminum strands. Strictly implement crimping process for joints, and match suitable hardware fittings. For long‑span and strong‑wind sections, install anti‑vibration accessories to reduce fatigue damage caused by aeolian vibration. Regular inspection on sag, joint temperature and surface corrosion helps extend service life.
Reliable ACSR Conductor Solutions
Hunan Yidong Crosslinked Cable provides a full range of standard ACSR overhead conductors with stable mechanical and electrical indexes, supporting customized specifications for special terrain and large‑span projects. We offer professional one‑stop services including conductor selection, technical guidance and project matching solutions for power grid, new energy and municipal engineering projects.
Contact us to get customized ACSR conductor solutions and free quotation for your projects. Official Website:https://yidongjiaolian.com