IEEE PC57.12.59

Revision Standard - Active - Draft.
Recommendations believed essential for the application of overcurrent protective devices that limit the exposure time of dry-type transformers to short-circuit currents are set forth in this guide. This guide is not intended to imply overload capability.

This guide for dry-type transformer through-fault current duration applies to dry-type distribution and power transformers built in accordance with C57.12.01 and referenced as Categories I, II and III.
This guide sets forth recommendations believed essential for the application of overcurrent protective devices that limit the exposure time of dry-type transformers to short-circuit currents. This guide is not intended to imply overload capability.