Conducteurs avancés HVCRC®

HVCRC® est une gamme complète de conducteurs avancés (également appelés câbles HTLS « High Temperature Low Sag » à âme composite) composés d’un noyau composite léger et robuste et de brins d’aluminium trapézoïdaux, conçus pour améliorer l’ampacité, réduire la courbure de la flèche et diminuer les pertes électriques sur les lignes de transmission et de distribution.

Avantages des conducteurs HVCRC® :

  • Capacité améliorée : doublez l’ampacité de la ligne pour répondre à la demande croissante en électricité, offrez plus de flexibilité pour les pics de demande, réduisez la congestion du réseau et permettez une intégration fluide des énergies renouvelables dans le réseau.
  • Efficacité améliorée : réduisez les pertes de ligne de 30 %, réduisant ainsi les coûts de production et les émissions de CO2, et délivrez plus de puissance avec la même capacité de production.
  • Réduction de la flèche et amélioration de la fiabilité (même à haute température) grâce au très faible coefficient de dilatation thermique et à la grande résistance du noyau composite, rendant le réseau plus résilient et flexible.
  • Déploiement rapide et facile, lorsque l’ampacité doit être augmentée de toute urgence pour fournir plus de puissance à des coûts minimaux et dans un délai court.

HVCRC® conductors are ideal for reconductoring projects. They allow double the ampacity of a transmission or distribution line with minimal reinforcement of existing structures, which means optimized project costs and planning.

HVCRC® is also an interesting option for new lines as it provides an optimized long term solution in terms of flexibility, efficiency and resilience. Advanced conductors also allow a lower total project cost (despite a usually higher cost for the conductor itself), and their high temperature low sag properties offer many benefits such as lower pylons and reduced environmental impacts.

HVCRC® conductors have a proven track record with several thousands of kilometers of conductors successfully installed and energized around the world in the past decades. See case studies for examples of past projects.

HVCRC® resource center


HVCRC® conductors electrical conductivity is ensured by trapezoïdal strands made of highly conductive 1350-O annealed aluminum.
In some cases, Aluminum Zirconium alloy can also be used if required.

HVCRC® conductors are stranded by selected manufacturing partners around the world, which went through a strict qualification process to demonstrate their performance and quality.


Epsilon manufactures HVCRC® composite cores in pultrusion, using Aerospace grade carbon fibers and a specific matrix to ensure the highest performance and durability.
HVCRC® composite cores include a microcore and an electrically insulating external layer in glass fiber, to optimize the core performance and flexibility, and protect the aluminum strands from galvanic corrosion.
If required, CoreCheck® monitoring of the composite core allows to check its integrity before and after the conductor installation.

More information about our composite cores

More information about the pultrusion process


ASTM Qualification

HVCRC® cores are qualified according to ASTM B987-20.

ASTM B987 is the only existing standard for Carbon Composite Cores used in High Tension Low Sag Conductors. It guarantees the performance and durability of composite cores, which will withstand extreme environmental conditions during several decades of service.
Certificates available upon request.

More information about the ASTM B987 standard


Hardware and fittings

Since 2011, Epsilon Cable and its partners developped a complete range of hardware for HVCRC® conductors, relying on the know-how and expertise of leading accessories manufacturers.
HVCRC® conductors are installed using conventional compression fittings. This reduces installation costs & complexity as compared with proprietary accessories.
This greatly reduces hardware costs, simplifies the supply chain, and guarantees utilities remain free to choose the manufacturer of their choice for their projects.
This also makes installation easier and safer, since it requires minimal training for linemen used to work with any other High Voltage conductors.

There are several approved hardware suppliers for HVCRC® worldwide, who conducted a thorough testing campaign to ensure the long term performance and compliance with requirements.
Sicame Group is Epsilon Cable’s preferred hardware manufacturer for HVCRC®. Sicame is renowned for the quality and reliability of their products, and can meet all market demands through its multiple manufacturing sites in Europe, Asia an America.
In some cases, when local content is required for the hardware, a local supplier can also be qualified.

Download our accessories catalogue

Watch our accessories e-training videos


Overhead line calculation

Using the industry standard line design software (PLS CADD), Epsilon engineers can ensure our conductors will meet your performance requirements and ensure the best performance on your project: sag, maximum ampacity, conductor temperature, catenary parameter etc…

You can also download HVCRC® .WIR files for your own calculations.


The history of HVCRC® Technology

W. Brandt Goldsworthy, nicknamed “the father of composites” and one of the inventors of the pultrusion process, could see as early as the 90’s the potential for improving overhead lines thanks to pultrusion.
He had the idea to replace the traditional steel core in High Voltage cables with a composite core, and in 1998, his team laid out the foundation for the first generation of composite cables.
Epsilon’s founder Stéphane LULL and his associate Laurent GUITTON (VP) had the opportunity to work with M. Goldsworthy in California around the same period, before he passed away. We are proud to have carried on his work and his legacy to this date, as we refined the pultrusion process and developed the HVCRC® with partners from all over the world.
The HVCRC® technology is now widely used by transmission and distributions utilities looking for a reliable and durable solution to upgrade overhead lines.


Frequently Asked Questions

We answered below some of the most common questions we get about HVCRC®:

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