What are bi-metallic lugs and why are they used in electrical systems?

In contemporary electrical installations, bi metallic lugs are utilized to provide safe and reliable connections between copper bus bars and aluminum conductors. The connectors are made from an aluminum barrel with a copper palm, which are combined using sophisticated methods such as friction welding. The main reason for employing bi metallic lugs is to compensate for the problems that occur when joining dissimilar metals—namely, the possibility of galvanic corrosion that results if aluminum and copper are directly joined. Overheating, failure of the joint, and system downtime are all possible consequences of corrosion, corrosion that is worrying to engineers and installers alike. Through the utilization of bi metallic lugs, the aluminum cable touches the aluminum section only, while the copper bus bar touches the copper palm, forming a secure and permanent joint. This arrangement not just protects against corrosion but also allows for the varying thermal expansion of the two metals such that the connection remains tight even after many years. Pioneer Power International is known for providing excellent quality bi metallic lugs that have extensive usage in control panels, switchgear, solar power plants, as well as other power distribution systems, ensuring safety and durability in electric installations.