556.5 MCM DOVE ACSR Conductor Cable
The ACSR CAA 556.5 MCM 26/7F DOVE is a high-capacity, steel-reinforced aluminium conductor designed for the efficient and reliable delivery of electrical power across overhead transmission and distribution lines. Its structure features 26 hard-drawn 1350-H19 aluminium strands wrapped around 7 galvanized steel strands, forming a strong, concentric-lay stranded design.
Manufactured in accordance with ASTM B232, this conductor brings together the lightweight, conductive benefits of aluminium with the mechanical strength and durability of galvanized steel. The steel core, treated with Class A or B galvanization, offers essential corrosion protection, especially in harsh weather environments or long-span installations.
The DOVE configuration is a popular industry standard for medium- to high-voltage overhead systems, offering excellent performance where long spans and high tension loads are involved. Its optimized aluminium-to-steel ratio makes it well-suited for utility transmission networks, helping reduce line losses while ensuring structural integrity.
Construction
Technical Specifications
Quality Control
Application
Construction
556.5 MCM DOVE ACSR Conductor Cable Construction
Standard
Product ASTM B232
The development of aluminium as a material for electrical conductors has progressed remarkably, largely due to its optimal electrical properties. Nevertheless, in most transmission lines with considerable spans, aluminium conductors need additional mechanical bracing—galvanized steel wires are commonly utilized as the core in ACSR to provide such support.
The development of aluminium as a material for electrical conductors has progressed remarkably, largely due to its optimal electrical properties. Nevertheless, in most transmission lines with considerable spans, aluminium conductors need additional mechanical bracing—galvanized steel wires are commonly utilized as the core in ACSR to provide such support.
Construction
Featuring a concentrically stranded design, ACSR includes one or more layers of hard-drawn 1350-H19 aluminium wires stranded around a galvanized steel core. The core can be a single wire or stranded, depending on size, and the steel wires are supplied with Class A or B galvanization as corrosion protection.
ACSR delivers a customized design that aligns with the electrical and mechanical strength requirements of transmission or distribution lines, achieved by combining aluminium and galvanized steel wires in suitable quantities.
ACSR delivers a customized design that aligns with the electrical and mechanical strength requirements of transmission or distribution lines, achieved by combining aluminium and galvanized steel wires in suitable quantities.
Applications
This cable is commonly employed as bare conductors for overhead transmission lines, while also serving as primary and secondary bare cables in distribution lines.
Conditions for Ampacity Calculation
Conductor temperature = 75 °C;
Room temperature = 25 °C
Room temperature = 25 °C
Technical Specifications
556.5 MCM DOVE ACSR Conductor Cable
556.5 MCM DOVE ACSR Conductor Cable
| Construction characteristics | |
| Type of cable | Dove |
| Type of conductor | Circular, stranded |
| Conductor material | aluminum / Steel Core |
| Conductor flexibility | Class AA |
| Conductor shape | Circular non compacted |
| Dimensional characteristics | |
| Conductor cross-section | 556.5 kcmil |
| Aluminium cross-section | 282.59 mm² |
| Conductor cross-section | 328.51 mm² |
| Number of aluminium wires | 26 |
| Diameter of aluminium wires | 3.72 mm |
| Number of steel wires | 7 |
| Diameter of steel wires | 2.89 mm |
| Diameter of steel core | 8.67 mm |
| Conductor diameter | 23.55 mm |
| Average geometric radius | 0.0955 m |
| Aluminium content | 785.1 kg/km |
| Steel content | 358.7 kg/km |
| Approximate weight | 1144 kg/km |
| Nominal outer diameter | 23.55 mm |
| Number of cores | 1 |
| Number of round wires | - |
| Electrical characteristics | |
| Max. DC resistance of the conductor at 20°C | 0.1025 Ohm/km |
| Max. electric resistance AC 60Hz 75°C | 0.123 Ohm/km |
| Inductive reactance | 0.3508 Ohm/km |
| Capacitive reactance | 0.2121 MOhm.km |
| Ampacity | 730.0 A |
| Mechanical characteristics | |
| Rated breaking load (Class A) | 10278 kgf |
| Rated breaking load (Class B) | 9969 kgf |
| Hardness type | 1350-H19 |
| Usage characteristics | |
| Length | 2100 m |
| Reel net weight | 2400 kg |
| Packaging | Reel 170/80 |
Quality Control
556.5 MCM DOVE ACSR Conductor Cable
Raw Material Test
Raw Material Test is the first quality control stage for the 556.5 MCM DOVE ACSR Conductor Cable. Aluminum rods are tested for electrical conductivity, tensile strength, elongation, and chemical composition to ensure efficient current transmission. Galvanized steel wires used for the core undergo tensile testing, zinc coating thickness measurement, and corrosion resistance evaluation. Dimensional accuracy, surface finish, and material traceability are strictly verified before production. Only raw materials that fully comply with ASTM, IEC, and internal specifications are approved, ensuring the electrical and mechanical reliability of the 556.5 MCM DOVE ACSR Conductor Cable from the initial stage.
Process inspection
Process Inspection controls the manufacturing consistency of the 556.5 MCM DOVE ACSR Conductor Cable throughout production. Wire drawing operations are continuously monitored to maintain precise diameter tolerance and smooth surfaces. During stranding, aluminum layers are helically applied over the steel core with controlled lay length and balanced tension. In-process inspections verify conductor roundness, strand alignment, compactness, and structural stability. These controls ensure uniform electrical performance and mechanical strength before the conductor proceeds to final testing.
Finished Product
Finished Product Testing confirms that the 556.5 MCM DOVE ACSR Conductor Cable meets all specified technical requirements. Electrical resistance tests verify current-carrying capacity and conductivity compliance. Tensile strength and elongation tests confirm mechanical performance under load. Dimensional checks and visual inspections ensure correct construction, uniform stranding, surface quality, and proper packaging, guaranteeing safe transportation and reliable installation.
Application
Used in overhead transmission lines, utility grids, and sub-transmission networks where high-capacity ACSR conductors with strong mechanical performance are required.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Wires and Cables packaging (1)
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