1590 MCM LAPWING ACSR Conductor Cable
The ACSR 1590 MCM Lapwing 45/7 is a high-efficiency, bare concentric-lay-stranded conductor designed for superior performance in overhead power transmission and distribution systems, meeting ASTM B232 standards. It features a galvanized steel core (Class A or B) with 7 steel strands for robust mechanical strength, surrounded by 45 strands of hard-drawn 1350-H19 aluminum wire for excellent electrical conductivity. Ideal for long-span transmission lines and primary/secondary distribution networks, the Lapwing configuration offers exceptional corrosion resistance and customizable aluminum-to-steel ratios to fulfill specific electrical and mechanical demands, ensuring reliable and durable power delivery. Galvanized steel wires used for the core undergo tensile testing, zinc coating thickness measurement, and corrosion resistance evaluation. Dimensional accuracy and surface condition of all materials are verified before approval.
Construction
Technical Specifications
Quality Control
Application
Construction
1590 MCM LAPWING ACSR Conductor Cable Construction
Standard
Product ASTM B232
Owing to its exceptional electrical properties, aluminum has seen substantial growth as a material for electrical conductors. Yet, in the case of long-span transmission lines, aluminum conductors require enhanced mechanical stability—galvanized steel wires serve as the standard core material in ACSR to address this need.
Owing to its exceptional electrical properties, aluminum has seen substantial growth as a material for electrical conductors. Yet, in the case of long-span transmission lines, aluminum conductors require enhanced mechanical stability—galvanized steel wires serve as the standard core material in ACSR to address this need.
Construction
For overhead power transmission and distribution lines, ACSR serves as a concentrically stranded conductor with a galvanized steel core (single or stranded, size-dependent) and outer layers of hard-drawn 1350-H19 aluminum wire. The steel core, available in Class A or B galvanization for corrosion resistance, combines with aluminum wires in configurable quantities to meet project-specific electrical and mechanical requirements.
Applications
In power systems, it is commonly used as bare cable for overhead transmission lines, and further serves as primary and secondary bare cable in distribution circuits.
Conditions for Ampacity Calculation
Conductor temperature = 75 °C;
Room temperature = 25 °C
Room temperature = 25 °C
Technical Specifications
1590 MCM LAPWING ACSR Conductor Cable
1590 MCM LAPWING ACSR Conductor Cable
| Construction characteristics | |
| Type of cable | Lapwing |
| Type of conductor | Circular, stranded |
| Conductor material | aluminum / Steel Core |
| Conductor flexibility | Class A |
| Conductor shape | Circular non compacted |
| Dimensional characteristics | |
| Conductor cross-section | 1590 kcmil |
| Aluminium cross-section | 807.53 mm² |
| Conductor cross-section | 863.13 mm² |
| Number of aluminium wires | 45 |
| Diameter of aluminium wires | 4.78 mm |
| Number of steel wires | 7 |
| Diameter of steel wires | 3.18 mm |
| Diameter of steel core | 9.55 mm |
| Conductor diameter | 38.22 mm |
| Average geometric radius | 0.01516 m |
| Aluminium content | 2241 kg/km |
| Steel content | 434.3 kg/km |
| Approximate weight | 2675 kg/km |
| Nominal outer diameter | 38.22 mm |
| Number of cores | 1 |
| Number of round wires | - |
| Electrical characteristics | |
| Max. DC resistance of the conductor at 20°C | 0.0359 Ohm/km |
| Max. electric resistance AC 60Hz 75°C | 0.045 Ohm/km |
| Inductive reactance | 0.3159 Ohm/km |
| Capacitive reactance | 0.1889 MOhm.km |
| Ampacity | 1340.0 A |
| Mechanical characteristics | |
| Rated breaking load (Class A) | 19109 kgf |
| Rated breaking load (Class B) | 18732 kgf |
| Hardness type | 1350-H19 |
| Usage characteristics | |
| Length | 1250 m |
| Reel net weight | 3345 kg |
| Packaging | Reel 210/100 |
Quality Control
1590 MCM LAPWING ACSR Conductor Cable
Raw Material Test
The Raw Material Test is the first critical step in ensuring the quality of the 1590 MCM LAPWING ACSR Conductor Cable. Aluminum rods are inspected for electrical conductivity, tensile strength, elongation, and chemical composition to guarantee efficient power transmission. Galvanized steel wires used for the core undergo tensile testing, zinc coating thickness measurement, and corrosion resistance evaluation. Dimensional accuracy and surface condition of all materials are verified before approval. Only raw materials that meet ASTM, IEC, and internal technical specifications proceed to production, ensuring the LAPWING ACSR conductor achieves stable electrical and mechanical performance from the foundation stage.
Process inspection
Process Inspection monitors each manufacturing stage of the 1590 MCM LAPWING ACSR Conductor Cable. During wire drawing, aluminum and steel wires are continuously checked for diameter tolerance and surface smoothness. The stranding process is carefully controlled to maintain precise lay length, uniform tension, and concentric construction. In-process inspections confirm strand alignment, compactness, and overall conductor roundness. These inspections ensure consistent current-carrying capacity and mechanical reliability throughout production. During stranding, aluminum layers and steel core are assembled with controlled tension and accurate lay ratios.
Finished Product
Finished Product Test confirms the final compliance of the 1590 MCM LAPWING ACSR Conductor Cable. Electrical resistance testing verifies current-carrying capability. Tensile and elongation tests ensure mechanical strength under operating conditions. Final checks include dimensional verification, surface inspection, marking accuracy, and packaging assessment, ensuring reliable delivery and installation readiness. Final inspections include dimensional checks, visual examination of stranding and surface quality, marking verification, and packaging integrity, ensuring the conductor is ready for safe transportation and installation.
Application
Widely used in overhead transmission lines, high-capacity utility grids, and long-span power corridors requiring robust ACSR conductors.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Wires and Cables packaging (1)
Wires and Cables packaging (2)
Wires and Cables packaging (3)
Wires and Cables packaging (4)
Wires and Cables packaging (5)
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Wires and Cables packaging (7)
Wires and Cables packaging (8)
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