How do bi-metallic lugs prevent galvanic corrosion between copper and aluminium?

Bi-metallic lugs are specially designed to prevent galvanic corrosion when connecting aluminum conductors to copper bus bars in electrical systems. Galvanic corrosion happens when two different metals, like copper and aluminum, touch each other, causing a chemical reaction that can weaken the connection and lead to failures over time. The clever design of bi-metallic lugs tackles this problem by ensuring that the aluminum cable only makes contact with the aluminum barrel, while the copper bus bar connects solely with the copper palm. These two metal parts are securely bonded through friction welding, creating a strong and seamless connection that keeps the dissimilar metals from touching. Plus, the aluminum barrels are often treated with chemicals and filled with corrosion-inhibiting compounds to further minimize the risk of oxidation and contact resistance. This thoughtful design and manufacturing process results in a reliable, long-lasting joint that upholds electrical integrity and safety. Pioneer Power International is well-known for delivering high-quality bi-metallic lugs that provide strong, corrosion-resistant connections in essential applications like control panels, switchgear, and solar power installations.