Why do 50 Hz transformers cost more than 60 Hz transformers?

摘要

The "Ask Control Engineering" blog recently received the following question from a reader: Most of the projects our company builds are used in North America, but we sometimes have to adapt equipment for overseas applications. Why is it that transformers capable of operating in a 50 Hz environment cost more than those for domestic 60 Hz operation? Is this a marketing ploy or is there a real justification for the cost difference?