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Transformer riddle no.7 - Current transformers costs
In an industrial project, the customer decided to change first order for new power transformer.
According to new order, the rating power of transformer should be half.He decided to check out the break down cost table of transformer. After checking out the new mentioned list; he noted that all individual part or subsystems of transformer cost decreased approximately except bushing current transformers. He can not understand the reason of this cost impact.

How can you explain the reason of BCT cost increasing due to its turn ratio decreasing?
Author : Hamid - From: IRAN
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