3M Aluminum Conductor Composite Reinforced (3M ACCR) is a high-voltage overhead transmission conductor. By replacing the steel core of standard conductors with wires composed of alumina fibers embedded in high purity aluminum, it can provide up to two or more times the current-carrying capacity. With the grid being asked to accommodate ever-growing demand for power, it's easy to recognize the advantages of a conductor that would be capable of carrying higher loads without dangerously sagging as a consequence. The conductor soon will be installed on more than 1,000 miles (1,609 km) of transmission lines on voltages ranging from 46 kV to 400 kV and in 11 nations on four continents.

Compared to standard conductors, 3M ACCR has the same strength but with less weight, less sag at high temperatures and consistent performance when operated at high temperatures for long periods of time. These properties are important if a utility wants to use existing structures and rights-of-way, but large capacity increases are needed; the structures cannot tolerate increased weight or tensions; clearances must be maintained or matched to other lines; lines cross environmentally sensitive or densely populated areas, or long spans.

For more information, visit solutions.3m.com.