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Written by Dr.Victor Sokolov
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Large power transformers fleet being in service over 25-30 years composes over 2,000,000 MVA. Transformer manufacturer capacity available allows replacing only one year production that was commissioned e.g. in the end of 1970th. A global task of power industry would be prolongation of service of huge aged population preventing cascade-mode failures among worn out equipment.
Transformer condition- based ranking (388kb pdf)
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