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SK-A Copper-to-Aluminum Connection Solution
Lower cost. Safer CU-AL connections.
Home / Copper to Aluminum Connection SKA
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SK-A Series Connectors
Significant Cost ReductionReliable Copper-to-Aluminum ConnectionFast & Flexible InstallationExcellent Corrosion ResistanceDesigned for Large-Scale PV Projects
Why Choose SUNKEAN
Advanced Manufacturing Capability
Strict Quality Control
Global Project Experience
Fast Installation
Why is aluminum used to replace copper?
FAQ on Copper to Aluminum Connection
How much cost savings can SUNKEAN’s copper-to-aluminum connection solution deliver?
Compared to a full-copper system, this solution reduces costs by up to 58%. In a 1 GW PV power plant project, the savings can exceed USD 2,750,000.
What makes the SK-A connector suitable for high-current photovoltaic applications?
The SK-A connector is engineered with optimized conductive structures and high-strength materials to support stable current transmission in demanding PV environments. Its compact and reliable design ensures low contact resistance, reduced heat generation, and long-term operational stability.
What welding process is used for the copper-to-aluminum joint, and how reliable is it?
The connection adopts friction welding (solid-state bonding), which operates at low temperatures to minimize thermal damage to the cable. Over 25 years, conductivity degradation is less than 0.5%. The tensile strength is verified through pull and impact testing.
How does the copper-to-aluminum connector maintain corrosion resistance in harsh environments?
The joint surface is protected by a three-layer gradient structure: diffusion layer, chemical nickel plating layer, and hot-dipped tin anti-oxidation layer. An electroplating hole design ensures uniform coating. In a 96-hour 5% salt spray test, no corrosion occurred in the contact area.
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