Type ACSR/AC

Description

Description

The wires in all bare conductors are stranded concentrically with successive layers having an opposite direction of lay, the outermost layer being right-handed. When required, a larger central wire (king-wire) is included in a conductor. The diameter of this wire is based on conductor design considerations and is usually 5% greater than the surrounding wires. The incorporation of a king wire is often an advantage for ACSR type conductors, as it ensures that the surrounding layer of wires fits firmly on the central wire.

Note Current ratings are based on the following conditions

  • Conductor temperature rise above ambient of 40°C
  • Ambient air temperature of 35°C for summer noon or 10°C for winter night
  • Direct solar radiation intensity of 1000W/m² for summer noon or zero for winter night
  • Diffuse solar radiation intensity of 100W/m² for summer noon or zero for winter night
  • Ground reflectance of 0.2
  • Emissivity of 0.5 for rural weathered conductor or 0.85 for industrial weathered conductor
  • Solar absorption coefficient of 0.5 for rural weathered or 0.85 for industrial weathered conductor

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
aluminum / aluminum-clad Steel
Type of cable
Gymnastics

Dimensional characteristics

Dimensional characteristics

Approximate weight
1620 kg/km
Conductor cross-section
506 mm²
Nominal overall diameter
29.3 mm
Stranding (No./mm)
54/3.25
Stranding No./mm Steel
7/3.25

Electrical characteristics

Electrical characteristics

Conductor AC resistance at 50 Hz
0.078 Ohm/km
Inductive reactance at 50Hz
0.207 Ohm/km
Max. DC resistance of the conductor at 20°C
0.062 Ohm/km
Rated Voltage Uo/U (Um)
-

Mechanical characteristics

Mechanical characteristics

Calculated breaking load
139.0 kN
Elongation coefficient
20.6 10E-6/°C
Final modulus of elasticity (MPA)
75000

Resources

Resources

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