954 MCM RAIL ACSR Conductor Cable
The ACSR CAA 954 MCM 45/7F RAIL is a robust Aluminium Conductor Steel Reinforced (ACSR) cable designed to meet the demanding requirements of modern overhead transmission and distribution systems. It consists of 45 hard-drawn 1350-H19 aluminium strands concentrically wound around 7 galvanized steel strands, forming a high-capacity conductor with a reliable strength-to-conductivity ratio.
Manufactured in accordance with ASTM B232, the RAIL configuration is ideal for long-span installations where increased tensile strength and environmental durability are essential. The galvanized steel core, coated to Class A or B standards, provides corrosion resistance and mechanical reinforcement against environmental stressors like wind, ice loading, and mechanical tension.
This ACSR design supports efficient power delivery across overhead transmission networks, while also serving as a dependable solution for primary and secondary distribution lines.
Construction
Technical Specifications
Quality Control
Application
Construction
954 MCM RAIL ACSR Conductor Cable Construction
Standard
Product ASTM B232
The use of aluminium in electrical conductors has grown substantially, largely because of its excellent electrical characteristics. Yet, in the case of most transmission lines with extensive spans, aluminium conductors necessitate extra mechanical reinforcement; typically, galvanized steel wires serve as the core for ACSR to address this requirement.
The use of aluminium in electrical conductors has grown substantially, largely because of its excellent electrical characteristics. Yet, in the case of most transmission lines with extensive spans, aluminium conductors necessitate extra mechanical reinforcement; typically, galvanized steel wires serve as the core for ACSR to address this requirement.
Construction
Consisting of a concentrically stranded structure, ACSR features one or more layers of hard-drawn 1350-H19 aluminium wires twisted around a galvanized steel core. While the core varies between single-wire and stranded configurations based on dimensions, the steel components offer Class A or B galvanization as corrosion resistance.
Designed in accordance with the electrical and mechanical strength needs of transmission or distribution lines, ACSR delivers a suitable design through the strategic combination of aluminium and galvanized steel wire quantities.
Designed in accordance with the electrical and mechanical strength needs of transmission or distribution lines, ACSR delivers a suitable design through the strategic combination of aluminium and galvanized steel wire quantities.
Applications
Frequently utilized as bare cable in overhead transmission lines, it additionally functions as primary and secondary bare cable for distribution networks.
Conditions for Ampacity Calculation
Conductor temperature = 75 °C;
Room temperature = 25 °C
Room temperature = 25 °C
Technical Specifications
954 MCM RAIL ACSR Conductor Cable
954 MCM RAIL ACSR Conductor Cable
| Construction characteristics | |
| Type of cable | Rail |
| Type of conductor | Circular, stranded |
| Conductor material | aluminum / Steel Core |
| Conductor flexibility | Class A |
| Conductor shape | Circular non compacted |
| Dimensional characteristics | |
| Conductor cross-section | 954 kcmil |
| Aluminium cross-section | 483.85 mm² |
| Conductor cross-section | 517.39 mm² |
| Number of aluminium wires | 45 |
| Diameter of aluminium wires | 3.7 mm |
| Number of steel wires | 7 |
| Diameter of steel wires | 2.47 mm |
| Diameter of steel core | 7.41 mm |
| Conductor diameter | 29.61 mm |
| Average geometric radius | 0.01174 m |
| Aluminium content | 1343 kg/km |
| Steel content | 262 kg/km |
| Approximate weight | 1605 kg/km |
| Nominal outer diameter | 29.61 mm |
| Number of cores | 1 |
| Number of round wires | - |
| Electrical characteristics | |
| Max. DC resistance of the conductor at 20°C | 0.0599 Ohm/km |
| Max. electric resistance AC 60Hz 75°C | 0.073 Ohm/km |
| Inductive reactance | 0.3352 Ohm/km |
| Capacitive reactance | 0.2011 MOhm.km |
| Ampacity | 970.0 A |
| Mechanical characteristics | |
| Rated breaking load (Class A) | 11787 kgf |
| Rated breaking load (Class B) | 11563 kgf |
| Hardness type | 1350-H19 |
| Usage characteristics | |
| Length | 2090 m |
| Reel net weight | 3345 kg |
| Packaging | Reel 210/100 |
Quality Control
954 MCM RAIL 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
Frequently utilized as bare cable in overhead transmission lines, it additionally functions as primary and secondary bare cable for distribution networks.
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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FAQ From Customers
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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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