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Reliability in power transformers is a key factor, and based on its performance during the life time. Whenever safety for people or property is of primary concern, dry-type transformers are used. Traditionally dry transformers were only for MV distribution applications available, but recently dry-type power transformers were introduced for the 72.5 kV sub-transmission voltage class, with ratings up...
The development of a dry-type transformer for the 72.5kV voltage class was already presented at CIRED 2011 [1]. Since then, large interest has been shown by many utilities as well as industries, because of the benefits inherent to the dry technology, meaning superior safety for people, property and the environment. These features make these transformers particularly suitable for installations in the...
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