What are bi-metallic lugs and why are they used?
Bi-metallic lugs, or BI METAL LUGS as they are often referred to, serve as electrical connections that facilitate safe connections between aluminium conductors and copper terminals or busbars. The manufacturing process involves the bonding of the two metals; a barrel made of aluminium that holds the aluminium cable and a palm made of copper that connects the cable to copper equipment. The metals do not come into direct contact with each other due to the isolation provided by this design, which is necessary for secure and dependable electrical connections.

The major factor for BI METAL LUGS usage is to eliminate galvanic corrosion that might occur otherwise. Upon direct connection of aluminium and copper, in the presence of moisture an electrochemical reaction may take place whereby aluminium gets oxidized. This results in the installation of a resistance that can lead to overheating or even the complete failure of the system. Bi-metallic connectors make such a situation impossible by maintaining a permanent metallurgical bond between the two metals, which is usually done through friction welding.

BI METAL LUGS also act as effective mediators to cope with the thermal expansion playful nature of aluminium and copper materials. This, in turn, reduces connection loosening when there is a variation in load and also during thermal cycling. Consequently, these lugs guarantee conductivity, mechanically strong connections, and long-term reliability.

Among the many applications for these lugs are power distribution panels, transformers, switchgear, industrial facilities, and renewable energy sources. High-quality BI METAL LUGS from reputable manufacturers like PIONEER POWER INTERNATIONAL are internationally certified, thereby helping to avoid mixed-metal electrical system-related problems in terms of safety, efficiency, and durability.