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Wire and cable provider Southwire Co. LLC has unveiled its carbon-fiber C7 overhead conductor, which the company says can help improve the reliability, capacity and performance of transmission lines.

Southwire reports that the multi-stranded composite core of the C7 uses advanced polymers, resins and thermoplastics from Celanese Corp., a company that offers differentiated chemistry solutions and specialty materials.

According to Southwire, the company has been developing the C7 overhead conductor for the past seven years. Southwire says the product design helps minimize sag at higher power transfer, and the stranded core means there is no single point of failure for the overhead conductor.

The C7, the company adds, has a service life in excess of 40 years and can be installed using standard line tools on existing structures and foundations with traditional two-piece compression connectors.

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