Transformers "Aluminum Instead of Copper": Hidden Public Safety Risks & Industry Fraud

In the field of power equipment manufacturing, the fraudulent practice of using "aluminum instead of copper" in transformers is becoming a serious threat to public safety and industry reputation. This phenomenon refers to manufacturers illegally substituting high-conductivity copper windings with aluminum or copper-clad aluminum windings without informing clients or accurately labeling the nameplates, significantly cutting production costs.

These counterfeit products are highly concealed; routine visual checks and electrical tests cannot detect them, often requiring destructive core-disassembly inspections for confirmation. Consequently, large numbers of substandard transformers have flowed into crowded or critical places like shopping malls, data centers, and renewable energy projects. The harm is multidimensional: aluminum’s oxide film is insulating, causing joint overheating, fires, or explosions, posing major public safety risks. Meanwhile, exported substandard products severely damage "Made in China’s" international reputation and hinder quality development.

To counter this, industries advise users to avoid unusually low-price traps, follow utility company management practices, and specify lifelong joint liability for "aluminum-for-copper" fraud in contracts to raise breach costs. It is crucial to distinguish compliant labeled aluminum-wound transformers from fraudulent counterfeits, eliminating asset devaluation and safety disasters caused by information asymmetry.