HVCRC® advanced conductors

HVCRC® is a complete range of advanced conductors (also called High Capacity / High Temperature Low Sag or HTLS conductors) made of a strong lightweight composite core and trapezoidal aluminum strands, designed to improve ampacity, reduce sag and reduce electrical losses on Transmission & Distribution lines.

Proven benefits of HVCRC® conductors:

  • Improved capacity: double the line ampacity to serve increasing electrical demand, provide more flexibility for peaks in demand, reduce grid congestion and allow a smooth integration of renewables into the grid.
  • Improved efficiency: reduce line losses by 30%, cutting down on generation costs and CO2 emissions, and delivering more power with the same generation capacity.
  • Reduced sag & improved reliability (even at high temperature) thanks to the composite core very low coefficient of thermal expansion and high strength, making the grid more resilient and flexible.
  • Fast and easy to deploy, when ampacity needs to be improved urgently to deliver more power with minimal costs and in a short timeframe.

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®: