Specifications

High Strength Stranding Conductors ACSR Dorking 190.8MCM

Code Name:                         Dorking

Standard:                              ASTMB232

Stranding/wire Dia. of Al:      12/3.20mm.

                                   St:       7/3.20mm.

Approx.Overall Dia.:              16.03mm.

Linear Mass:                          709kg/km.

Nominal Breaking Load:         84.8kN.

Max.D.C.Resistance at 20°c: 0.2995 ohm/km.

1.Construction

Aluminum alloy 1350-H-19 wires, concentrically stranded about a steel core.Core wire for ACSR is available with class A, B, or C galvanizing; aluminum coated (AZ); Or aluminum-clad (AW). Additional corrosion protection is available through the application of grease to the corer or infusion of the complete cable with grease.

2.Property

ACSR can be manufactured to different strengths by requirement. The conductor is constructed from a solid steel core, surrounded by aluminium stranding. The solid steel core is strong yet ductile, while the outer stranding of aluminium gives excellent conductivity with a low weight and low cost. The ACSR conductor is available in a range of steel strengths from as little as 6% up to 40%. The stronger the steel percentage, the more arduous tasks it can take on; the highest strength conductors are used as overhead wires, for river crossings, and any installations which require a particularly long span without support.

ACSR also has the double benefit that as well as being high strength, it is also lightweight. ACSR conductors have a higher diameter than AAC and AAAC due to their steel core, and due to this they can obtain a higher corona limit, giving the advantage for high voltage overhead lines. ACSR is also used for local distribution, suspended from wooden poles or other alternative methods.

3.Code Name of ASTM B232