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IEEE C57.109-1985

M00013307

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IEEE C57.109-1985 IEEE Guide for Transformer Through-Fault-Current Duration

standard by IEEE, 12/02/1985

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New IEEE Standard - Superseded.Recommendations believed essential for the application of overcurrent protective devices applied to limit the exposure time of transformers to short circuit current are set forth. Transformer coordination curves are presented for four categories of transformers. There is no intent to imply overload capability.