The new C7 Overhead Conductor with a multi-stranded composite core of Celstran® continuous fibre-reinforced thermoplastic rods (CFR-TPR) from Celanese.
The new C7 Overhead Conductor with a multi-stranded composite core of Celstran® continuous fibre-reinforced thermoplastic rods (CFR-TPR) from Celanese.

Designed for utilities that want greater flexibility, reliability and ease of installation, Celanese adds that the C7™ Overhead Conductor uses Celstran CFR-TPR composite technology that involves a combination of carbon-fibre and a heat-resistant Fortron® PPS (polyphenylene sulfide) matrix that is capped with a layer of high-performance PEEK (polyether ether ketone). This combination of materials is claimed to provide distinct advantages compared to alternative High Temperature Low Sag (HTLS) technology and conventional conductors.

The Celanese and Southwire developed transmission conductor delivers nearly double the capacity and exhibits less sag than the same diameter aluminium conductor steel-reinforced (ACSR) conductor. The design allows for minimum sag at higher power transfer, and the stranded Celstran CFR-TPR core means there is no single point of failure for the overhead conductor.

The C7 Overhead Conductor with Celstran CFR-TPR provides a number of advantages:

  • Minimal thermal expansion - Lowest level available in a composite core for minimal sag increase at high power transfer.
  • Lightweight - High strength-to-weight ratio.
  • Multi-element core - No single point of failure, unlike monolithic constructs.
  • Flexible and robust - Installs like traditional conductor without the need for special training and equipment.
  • Celanese engineered material - The only all-thermoplastic composite core with high-temperature performance (180-225°C).
  • Multiple conductor designs - Tailor for installation requirements, from light to heavy ice loads, normal to long spans, and numerous conductor constructions.
  • Use of conventional connectors - Traditional, crew friendly, two-piece compression fittings.