In High-current Or High-voltage Environments, Attention Should Be Paid To The Material And Structure Of Bimetallic Terminals.

When two metals (such as aluminum and copper) are joined by friction welding or mechanical pressing, their coefficients of thermal expansion differ. If the structural design of bi metal lugs connectors does not adequately consider this, microscopic slippage or loosening will occur after energization, leading to increased contact resistance of bi metallic cable lugs and accelerated localized heating. The connection of bimetal cable lug, due to thermal cycling or sudden current changes, results in oxidation of the contact surface and increased gaps, making it more prone to breakdown or arcing in high-voltage scenarios.