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

Standard Details

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.

Sponsor Committee	PE/TR - Transformers
Status	Superseded
Superseded by	C57.109-1993
Board Approval	1983-06-23
History	Published Date:1985-12-02

Additional Resources Details

Pars	Approved PAR

Working Group Details

Working Group	PerfCharac-WGC57.109 - Performance Cahracteristics - Liquid-Immersed Transformers Working Group
Working Group Chair	Vinay Mehrotra
Sponsor Committee	PE/TR - Transformers
Society	PE - IEEE Power and Energy Society
IEEE Program Manager	Malia Zaman
Existing Standards	Superseded C57.109-1993 - IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration Recommendations believed essential for the application of over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
	Active C57.109-2018 - IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration 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.