While the full official standard must typically be purchased through authorized sellers like the IEC Webstore or the iTeh Standards Store , you can find detailed technical summaries, calculation methods, and educational excerpts for free on several platforms. Where to Find Technical Content and Calculations : Platforms like Scribd

: Refers to IEC 60949 for calculating permissible currents based on specific temperature limits for cables rated from 6 kV to 30 kV. Technical Content

offer partial previews of standards that cite IEC 60949, which can provide necessary formulas. Community Sharing

The official standard, , describes methods for calculating thermally permissible short-circuit currents, accounting for both adiabatic and non-adiabatic heating effects.

A short, safe takeaway IEC 60949 content is essential but copyrighted; prioritize obtaining the official document through institutional access or purchase, and rely on vetted summaries and worked examples when you need quick, practical guidance. If you’d like, I can outline the standard’s calculation steps and typical example faults in a concise worked example (assuming typical transformer and bus parameters). Which would you prefer?

Understanding IEC 60949: Calculation of Thermally Permissible Short-Circuit Currents (And the Reality of "Free PDFs")