IEEE Standards Association
IEEE STANDARD
C57.109-1993 - IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration
Description: 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.
- Status:
Working Group: PerfCharac-WGC57.109 - Performance Cahracteristics - Liquid-Immersed Transformers Working Group
Oversight Committee: PE/TR - Transformers 
Sponsor: IEEE Power & Energy Society
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