What materials are typically used in the construction of bi-metallic lugs?

Bi metallic lugs are critical components in contemporary electrical systems that are meant to join copper bus bars with aluminum conductors securely and effectively. The lugs are made with a copper palm and an aluminum barrel, which are then combined through friction welding—a method of combining the two metals in a strong and tight bond. The main purpose of utilizing bi metallic lugs is to avoid galvanic corrosion, a chemical reaction when two dissimilar metals like aluminum and copper are in direct contact with each other. Galvanic corrosion can weaken the electrical connection's integrity by causing overheating or failure in the long term. By employing the use of bi metallic lugs, the aluminum conductor merely contacts the aluminum barrel and the copper palm comes into contact with the copper bus bar, effectively reducing direct contact between the two metals and providing a corrosion-proof joint. In addition, the aluminum barrel is typically treated with anti-oxidation chemicals and sealed to guard against dust invasion, also improving durability. Pioneer Power International specializes in producing high-performance bi metallic lugs that meet international specifications and are extensively used in control panels, switchgear, and solar power systems, ensuring robust and durable connections in various electrical installations.