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Recent content by 9150

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    Transformer overloading

    Can someone help me out on power transformer CER, CMR ratings. How are they related to ONAN, ONAF, OFAF, ODAF, etc cooling for 40MVA up to and including 120MVA 132kV? When some says "this transformer is a CER", what do they mean? if a transformer is for example 30/60MVA does it automatically...

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