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Aluminium Conductors Steel Reinforced (ACSR), also known as Bare aluminium conductors, are one of the most widely used conductors for transmission. 336.4 Merlin ACSR Cable consists of one or more layers of aluminium wires stranded over a high strength steel core that can be single or multiple strands depending on the requirement. There can be various stranding combinations of Al and steel wires lending flexibility to obtain suitable current carrying capacity and mechanical strength for the application.
Specifications
Size (AWG or MCM): 336.4
Stranding (AL/STL): 18/1
Diameter Inches: Aluminum: 0.1367
Diameter Inches: Steel: 0.1367
Diameter Inches: Steel Core: 0.1367
Diameter Inches: Cable OD: 0.683
Weight lb/1000FT: Aluminum: 315.8
Weight lb/1000FT: Steel: 49.5
Weight lb/1000FT: Total: 365.2
Content %: Aluminum: 86.45
Content %: Steel: 13.55
Rate Breaking Strength (lbs.): 8,680
OHMS/1000ft: DC at 20ºC: 0.0510
OHMS/1000ft: AC at 75ºC: 0.063
Ampacity: 519 Amps
Application
336.4 Merlin ACSR Cable is suitable for use in all practical spans on wood poles, transmission towers, and other structures. Applications range from long, extra high voltage (EHV) transmission lines to sub-service spans at distribution or utilization voltages on private premises.
ACSR (aluminum conductor steel reinforced) conductor has a long service record because of its economy, dependability, and strength to weight ratio. The combined light weight and high conductivity of aluminum with strength of the steel core enables higher tensions, less sag, and longer spans than any alternative.
Standards
ASTM B-230 Aluminum wire, 1350-H19 for Electrical Purposes
ASTM B-231 Aluminum conductors, concentric lay stranded
ASTM B-232 Aluminum conductors, concentric lay stranded, coated steel reinforced (ACSR)
ASTM B-341 Aluminum coated steel core wire for aluminum conductors, steel reinforced (ACSR/AZ)
ASTM B-498 Zinc coated steel core wire for aluminum conductors, steel reinforced (ACSR)
