Long-term Operational Safety Assurance Strategy For Bimetallic Terminals
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Employing copper-aluminum fusion welding or friction welding processes can weaken the electrochemical reactions between different metals, thereby significantly reducing the risk of increased interfacial resistance in the bi metallic cable lugs interface.
Observations of the bimetal cable lug body and conductor contact surfaces revealed that oxide films, corrosion products, or contaminants can increase the number of tiny "voids" at the contact points, leading to localized overheating.
Environmental factors have a significant impact on the lifespan of the bimetal terminal lug. High humidity or corrosive gas environments make the copper-aluminum interface more prone to forming corrosion paths.
