IEEE C57.109-1993
- IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration
- standard by IEEE, 10/15/1993
- Category: IEEE
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Revision Standard - Superseded.Recommendations believed essential for the application of over current protective devices applied to limit the exposure time of transformers to short-circuit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
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