477 MCM PELICAN ACSR Conductor Cable
The ACSR CAA 477 MCM 18/1F PELICAN conductor is a high-performance Aluminium Conductor Steel Reinforced (ACSR) cable designed for use in overhead transmission and distribution line systems. Constructed with 18 strands of hard-drawn 1350-H19 aluminium helically stranded around a single galvanized steel wire, this conductor offers a well-balanced combination of electrical conductivity, lightweight design, and mechanical strength.
Manufactured in compliance with ASTM B232, the PELICAN configuration is ideal for long-span installations where tensile strength, corrosion resistance, and current-carrying capability are critical. The galvanized steel core, available with Class A or B galvanization, provides excellent protection against environmental degradation while reinforcing the aluminium layers with the mechanical support required for demanding utility applications.
Its 18/1 stranded design makes the PELICAN conductor particularly suitable for medium- and high-voltage overhead systems where both performance and cost-efficiency are important.
Construction
Technical Specifications
Quality Control
Application
Construction
477 MCM PELICAN ACSR Conductor Cable Construction
Standard
Product ASTM B232
Aluminium has become widely adopted as an electrical conductor material, largely due to its favorable electrical properties. However, for most long-span transmission lines, aluminium conductors require additional mechanical support—galvanized steel wires are commonly used as the core in ACSR conductors to address this need.
Aluminium has become widely adopted as an electrical conductor material, largely due to its favorable electrical properties. However, for most long-span transmission lines, aluminium conductors require additional mechanical support—galvanized steel wires are commonly used as the core in ACSR conductors to address this need.
Construction
ACSR is a concentrically stranded conductor consisting of one or more layers of hard-drawn 1350-H19 aluminium wires twisted around a galvanized steel wire core. The core can be either a single wire or stranded, depending on size, and the steel wires feature Class A or B galvanization for corrosion protection.
Engineered to meet the electrical and mechanical strength requirements of transmission or distribution lines, ACSR enables an optimal design by combining the right quantities of aluminium and galvanized steel wires.
Engineered to meet the electrical and mechanical strength requirements of transmission or distribution lines, ACSR enables an optimal design by combining the right quantities of aluminium and galvanized steel wires.
Applications
It is widely used as bare cable for overhead transmission lines and further serves as primary and secondary bare cable in distribution line systems.
Conditions for Ampacity Calculation
Conductor temperature = 75 °C;
Room temperature = 25 °C
Room temperature = 25 °C
Technical Specifications
477 MCM PELICAN ACSR Conductor Cable
477 MCM PELICAN ACSR Conductor Cable
| Construction characteristics | |
| Type of cable | Pelican |
| Type of conductor | Circular, stranded |
| Conductor material | aluminum / Steel Core |
| Conductor flexibility | Class AA |
| Conductor shape | Circular non compacted |
| Dimensional characteristics | |
| Conductor cross-section | 477 kcmil |
| Aluminium cross-section | 242.31 mm² |
| Conductor cross-section | 255.77 mm² |
| Number of aluminium wires | 18 |
| Diameter of aluminium wires | 4.14 mm |
| Number of steel wires | 1 |
| Diameter of steel wires | 4.14 mm |
| Diameter of steel core | 4.14 mm |
| Conductor diameter | 20.7 mm |
| Average geometric radius | 0.00803 m |
| Aluminium content | 668.1 kg/km |
| Steel content | 104.7 kg/km |
| Approximate weight | 772.8 kg/km |
| Nominal outer diameter | 20.7 mm |
| Number of cores | 1 |
| Number of round wires | 19 |
| Electrical characteristics | |
| Max. DC resistance of the conductor at 20°C | 0.119 Ohm/km |
| Max. electric resistance AC 60Hz 75°C | 0.145 Ohm/km |
| Inductive reactance | 0.3639 Ohm/km |
| Capacitive reactance | 0.2182 MOhm.km |
| Ampacity | 640.0 A |
| Mechanical characteristics | |
| Rated breaking load (Class A) | 5445 kgf |
| Rated breaking load (Class B) | 5363 kgf |
| Hardness type | 1350-H19 |
| Usage characteristics | |
| Length | 1740 m |
| Reel net weight | 1340 kg |
| Packaging | Reel 125/100 |
Quality Control
477 MCM PELICAN ACSR Conductor Cable
Raw Material Test
NPC has always chosen raw material suppliers who have a good reputation, possess stable supply capabilities and have passed international quality system certifications (such as ISO 9001). And establish a long-term cooperative relationship with it, forming a stable and reliable raw material supply chain.
We will ensure that all raw materials are subject to strict inspection procedures upon entry to the factory, and can only be stored in the warehouse after they have been confirmed to meet the standards.
Process inspection
NPC has strict quality control procedures for each process in the cable production process.
Process documents: Develop detailed process flow and operation instructions to clarify the operating specifications and quality standards of each process.
Equipment calibration: Regularly calibrate key equipment such as wire drawing machines, stranding machines, extruders, and diameter gauges to ensure that the accuracy meets the requirements.
First piece confirmation: Before each batch of production, the first piece is trial-produced to confirm that the process parameters, product dimensions, electrical performance, etc. meet the standards before mass production can be carried out.
Finished Product
Inspectors conduct ex-factory inspections on cables according to relevant standards and corresponding product inspection specifications to ensure that each ex-factory product complies with the process regulations.
Application
It is widely used as bare cable for overhead transmission lines and further serves as primary and secondary bare cable in distribution line systems.
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)
Wires and Cables packaging (6)
Wires and Cables packaging (7)
Wires and Cables packaging (8)
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What are the advantages of power cables and overhead lines?(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people; (2) The maintenance workload is small and frequent inspections are not required; (3) No need to erect towers; (4) Help improve power factor.
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Which aspects should be considered when choosing the cross section of a power cable?(1) The long-term allowable working current of the cable; (2) Thermal stability once short circuited; (3) The voltage drop on the line cannot exceed the allowable working range.
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What are the measures for cable fire prevention?(1) Use flame-retardant cables; (2) Use fireproof cable tray; (3) Use fireproof paint; (4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.; (5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.
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What should be paid attention to during the transportation and handling of cables?(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat. (2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.
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What inspections should be carried out for the acceptance of cable lines?(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear; (2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements; (3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements; (4) Good grounding; (5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted; (6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.
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