Metal corrosion is a big challenge for industrial designers and engineers. Structures exposed to standing water and caustic chemicals are particularly susceptible to long-term corrosive damage.
Builders often use a solution called Cathodic Protection (CP) to minimize the effects of corrosion. The CP process requires a rugged, highly specialized cable that can withstand the most severe conditions. For particularly tough environments, engineers typically specify Halar® cathodic protection cable.
Cathodic protection works by connecting the protected structure to a more easily corroded metal. When an electrical current passes between the two, the ‘sacrificial’ metal acts as an anode and corrodes, sparing the protected metal.
Cathodic protection cable (CPC) is used to connect the two metal surfaces. CPC must possess several characteristics, including:
Halar CPC is a stranded copper wire with two highly protective layers of insulation. The outer layer is made of high molecular weight polyethylene (HMWPE) and is thicker than traditional wire insulation (110 mm versus 30-45 mm). An additional ethylene chlorotrifluoroethylene (ECTFE) lining sits between the copper wire and the HMWPE insulation.
This double layer of insulation makes Halar a popular choice for engineers seeking the best-performing CPC cable. In addition to the characteristics above, Halar CPC also offers:
You’ll find Halar CPC in some of the most corrosive and challenging industrial environments. Here are some of the more common applications for Halar CPC:
Bridges. Buried or submerged bridge structures, particularly those exposed to salt from de-icing, are highly vulnerable to corrosion. Halar is very resistant to chloride ions found in salt.
Marine buildings. Seawater is much more corrosive than fresh water. As a result, Halar cable is commonly used in oil rigs, offshore wind farms, and other marine construction projects.
Petroleum infrastructure. Standing water and harsh chemicals are prevalent in oil fields, pipelines, and refineries. Cathodic protection systems operating in these environments utilize the most robust materials — including Halar CPC.
Water towers and storage tanks. Most corrosion occurs inside tanks, and Halar CPC is submersible rated.
Ships. Ships and boat hulls are exposed to the worst corrosive elements, including seawater, diesel fuel, and harmful solvents. Halar CPC performs well in these demanding environments.
Kris-Tech’s Halar CPC is proudly manufactured in the US according to Underwriters Laboratory (UL) construction guidelines. It is available in a 600V version suitable for use at a maximum continuous operating temperature of 75°C in wet and dry locations.
Our Halar cable is available in a range of sizes, two jacket thicknesses (0.065” or 0.090”), all colors standardized by the American Public Works Association (APWA) Uniform Color Code for Underground Utility Lines, and with custom printing legends.
Kris-Tech Halar CPC cable meets the following industry specifications:
At Kris-Tech, we work hard to provide the very best experience for our customers. Here are eight reasons to choose Kris-Tech for your next Halar CPC purchase: