High Voltage and Specialty Cable

High Voltage and Specialty Cable

High-quality and reliable service to the utility industry for over 150 years

Underground Kerite Power Cable

Upcoming Webinar- The Advantages of Kerite Power Cable

Wednesday, May 1st 11:00am ET

Kerite has been manufacturing and installing power cable for the electric utility
industry for over 150 years. This webinar will focus on why the Kerite design is
unique in the industry, the benefits this solution provides, and the various applications
Kerite is well-suited for.


Kerite High-Voltage DR-EPR Power Cable Gets the Job Done

Kerite has supplied over 3.5 million feet of underground transmission cable to customers in North America being installed with similar insulation media since the 1970s.

Discharge-Resistant EPR has electrical, mechanical, thermal and chemical properties that combine to create superior cable insulation that has been installed in all types of environments with no known cable failures due to insulation degradation or weakness. It is a record unequaled in the electrical power cable industry.

Our dependable cable is made in the USA and comes with a lifetime warranty, helping to give you the lowest lifetime cost of ownership.

Preassembled Aerial Cable: A Low-Cost, Out-of-the-Box Solution

Kerite Preassembled Aerial Cable (15kV – 35kV) is an easy and inexpensive method for running open wire circuits under a bridge and a lower-cost alternative for underground feeders and circuits.

Kerite’s Preassembled Aerial cable comes completely assembled on the reel, with 3 conductors tri-plexed and wrapped with a strap to a copper-clad messenger wire. It’s ready to go up on the pole and is used in locations closer to the public; it is completely insulated with no touch potential. It also installs quicker than 3 individual cables on insulators.

  • Conductor – Compressed or Compact, Three Copper or Aluminum Conductors
  • Conductor Shield – Non-conducting Permashield® Stress Control Layer
  • Insulation – Discharge-Resistant EPR Insulation
  • Insulation Shield – Extruded Free Stripping Semiconducting Layer
  • Metallic Shield – Copper Tape with Jacket or Cupro Nickel Tape 
  • Jacket – Optional
  • Support – Copper-Clad Messenger Wire
  • Custom Built

Kerite Subsea Cable Performs Wherever You Need It – 15–35kV, 1/C and 3/C

Kerite knows subsea cable—decades of subsea cable installations have made us experts in the field. Since the late 1800s, our cable has been used in the harshest environments. They are designed to withstand the most adverse submarine and wet conditions imaginable.

It’s not just underwater though. We solve everyday problems on land too. Kerite high-voltage cable is commonly used for flooded vaults, water-soaked conduit, and high-groundwater applications.

Research, development, and quality—Kerite innovates, tests, and refines our products continuously. That’s what makes Kerite’s commitment to your work unsurpassed.

Kerite Subsea Cable

Why Kerite High Voltage and Specialty Cable? Because It Works.

Discharge Resistant Insulation

Partial discharge is caused by the electrical breakdown of air in the voids within the cable insulation – and it can lead to cable failure.

Only Kerite manufactures a corona resistant insulation system that meets ICEA standard S-94-649-2013.

The test that evaluates discharge resistance of different insulation types (ASTM D2275) shows Kerite HVK Discharge Resistant EPR™ insulation with no insulation erosion after over 250 hours of testing.

Discharge resistance prevents the treeing process in Kerite Discharge Resistant EPR™ insulation and as a result, Kerite cable can last the lifetime of the installation.

Underground cable stripped back showing layers and permashield


Permashield non-conducting stress control layer – a Kerite exclusive.

Permashield is a high specific inductive capacity (SIC) material with insulating properties, and it delivers superior stress relief between the conductor and the insulation layer. During extrusion, Kerite performs a continuous 2kV DC production test for stress control layer continuity.

The result is a robust cable design with stable long term AC cable strength and impulse breakdown levels.

Underground cable on a giant reel

Transient Attenuation

The longer the cable length, the greater the amount of attenuation.

Kerite cables provide a superior level of high frequency attenuation, and add another level of protection to the distribution system.

Kerite cable’s electrical properties cause the rate of rise of high frequency impulses to lengthen. These transient voltage spikes can cause transformer windings to short – even if the maximum voltage of the transient is below the transformer’s Basic Impulse Level (BIL).

Kerite cable is four times more effective in attenuating transients than EPR cable from other manufacturers and significantly outperforms TR-XLPE.

Long Service Life

Cable life is a function of design properties, manufacturing, and installation. We’re confident enough to warranty Kerite cable for life.

While the lifetime of TR-XLPE insulated cables is up to 40 years, failures can be expected to start occurring at the cable half-life of 20 years.

Kerite has never experienced any field related insulation failures for its EPR cables, so the half-life of Kerite cable has not been reached – despite its field use for over 50 years.

Underground cable floating at top of ocean with orange floats

Superior Wet Performance

Kerite’s proprietary EPR insulation is unaffected by moisture.

Kerite cable will perform without failure in the typical utility trouble spots: flooded vaults, water-soaked conduit and high ground water applications. Kerite cables were used in the first submarine applications over 120 years ago.

Kerite submarine cables are installed in the harshest marine environments.

Subsea Kerite Install

Kerite Installation Services Support You From Start to Finish

We start with a cable that has unsurpassed lifetime functionality.

The other difference is our expertise and our people who create the ability to put solutions into motion right away. This is how we deliver value immediately and for decades to come. It makes Kerite Power Cable the most trusted name in the cable business.

  • Complete turnkey project management services for installation
  • Special project executions
  • On-site project management
  • Designs
  • Calculations
  • Testing
  • Documentation

See more about our undergrounds installation services

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Let’s Work Together

Your utility will have the systems and the product you need to rise to the top when you’re underground.

Contact Your Sales Rep