What Not To Do When Purchasing EI Transformers

 

What Not To Do When Purchasing EI Transformers


EI transformers are inherently robust and time-tested, but that doesn’t mean we expect them to deliver decades of trouble-free operation. A well-built unit can typically perform reliably for 20-30 years, yet premature failures still occur in many applications. In most cases, these failures are not due to limitations of the technology itself, but because of incorrect purchasing decisions made at the very beginning of the lifecycle. Procurement teams often focus primarily on the price, delivery timelines, and basic electrical ratings, even though these factors alone do not determine long-term performance. Critical parameters like thermal design, insulation system, manufacturing discipline, and testing practices play a decisive role in reliability, efficiency, and service life, and overlooking them significantly increases the total cost of ownership. Let us explore some of the key purchasing mistakes that buyers should avoid when selecting an EI transformer.

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