Transformer specification course – e-lesson #10: Tender assessment and specifications

This was the final lesson in the Transformer Specification course, presented by an electrical engineer specializing in high-voltage equipment. The key topics were preparing technical data sheets, conducting economic loss evaluations, and assessing total lifecycle costs. The presenter emphasized developing detailed technical specifications to ensure transformers are fit for purpose and provide the best value over their lifetime. This includes specifying mandatory requirements and optional performance guarantees related to losses and efficiency. The economic loss evaluation allows comparing bids based on upfront cost and projected operating costs. Factors like no-load losses, load losses, and auxiliary losses are quantified and monetized to determine total ownership cost. The presenter also discussed emerging trends, such as minimum efficiency requirements for large power transformers. He stressed the need for procurement policies that incentivize high-efficiency transformers to reduce energy consumption and environmental impact. Overall, the lesson provided best practices for transformer specification and tender assessment, showing how this process can add significant value throughout the transformer's lifecycle.