06Conductors

High Voltage Overhead Line Conductors

Five conductor variants — AAC, AAAC, ACSR, ACAR, and ACSS — meeting or exceeding ASTM, IEC, DIN, BS, AS, CSA, NFC, and SS standards. OEM services available for special requests.

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High voltage overhead line conductors
01Overview

Five variants. One supplier.

Intraco supplies the full range of high voltage overhead line conductors used in transmission and distribution networks — from refined aluminium (AAC) for urban and coastal use, to steel-supported alloys (ACSS) rated for continuous operation at 250°C.

All variants meet or exceed international standards (ASTM, IEC, DIN, BS, AS, CSA, NFC, SS). OEM services are available for special requests.

02Comparison

Variant comparison.

# Code Name Construction Primary application
01 AAC All Aluminum Conductor Aluminium 1350-H19 wires, concentrically stranded. Urban areas with short spacing; coastal regions; railway and metro.
02 AAAC All Aluminum Alloy Conductor Aluminium alloy 6201 wires, concentrically stranded. Aerial circuits requiring more mechanical resistance than AAC.
03 ACSR Aluminum Conductor Steel Reinforced Hard-drawn 1350-H19 aluminium over galvanized steel core. River crossings, long spans, HV/EHV overhead lines.
04 ACAR Aluminium Conductor Alloy Reinforced Aluminium 1350 strands over Aluminium-Magnesium-Silicon alloy core. Overhead transmission and distribution where ampacity and strength matter.
05 ACSS Aluminum Conductor Steel Supported Annealed 1360-0 aluminium over high-strength galvanized steel core. Reconductoring; high emergency loadings; up to 250°C continuous.
03Detail

Per-variant specifications.

01 · AAC

All Aluminum Conductor

Aluminium 1350-H19 wires, concentrically stranded.

Construction

MaterialAluminium 1350-H19
ConstructionConcentrically stranded wires
Metal purityMinimum 99.7%

Applications

  • Urban areas with short spacing and close supports
  • Coastal regions, due to high corrosion resistance
  • Railway and Metro industries
02 · AAAC

All Aluminum Alloy Conductor

Aluminium alloy 6201 wires, concentrically stranded.

Construction

MaterialAluminium alloy 6201
ConstructionConcentrically stranded wires

Applications

  • Bare conductor cable for aerial circuits requiring greater mechanical resistance than AAC
  • Better corrosion resistance than ACSR
  • Superior sag characteristics and strength-to-weight ratio compared to AAC and ACSR
03 · ACSR

Aluminum Conductor Steel Reinforced

Hard-drawn 1350-H19 aluminium over galvanized steel core.

Construction

AluminiumHard-drawn 1350-H19
Steel coreSingle or stranded, galvanized
GalvanizationClass A, B, or C
Steel content6% – 40% (variable for strength)
CorrosionOptional grease application or infusion

Applications

  • River crossings, overhead earth wires, extra-long span installations
  • Higher strength variants for resistance requirements
  • Lightweight properties for longer distances with fewer supports
  • High and extra-high voltage overhead lines (greater corona limit)
04 · ACAR

Aluminium Conductor Alloy Reinforced

Aluminium 1350 strands over Aluminium-Magnesium-Silicon alloy core.

Construction

ConductorAluminium 1350 strands
CoreHigh-strength AlMgSi alloy
VariantsStranded core, or distributed AlMgSi wires throughout

Applications

  • Overhead transmission and distribution lines
  • Balanced mechanical and electrical properties
  • Ideal where ampacity, strength, and lightweight are priorities
  • Better mechanical and electrical properties than equivalent ACSR, AAC, or AAAC
05 · ACSS

Aluminum Conductor Steel Supported

Annealed 1360-0 aluminium over high-strength galvanized steel core.

Construction

AluminiumAnnealed 1360-0 ("0" temper)
CoreSteel strands, galvanized
LoadSteel core carries most or all mechanical load
Max tempContinuous operation to 250°C

Applications

  • Overhead distribution and transmission lines
  • Reconductoring projects requiring increased current with existing tensions
  • Economized new structures
  • High emergency loading scenarios
  • Aeolian vibration problem areas

Need help choosing a variant?

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