Let me know once the file is available.
You can download the IEEE Std 80-2013 pdf from the following sources:
: You can buy the verified, current version directly from the IEEE Standards Association Community Shared Copies
: New curves were introduced to help engineers more accurately approximate the split factor ( Sfcap S sub f
A common mistake is assuming all fault current goes into the grid. The standard provides methods to calculate how much current returns through overhead shield wires and neutral conductors. Use the split factor equations (Sf) to reduce the grid current—this saves thousands in copper costs.

Lou S. Felipe, Ph.D. (she/they) is an assistant professor at the University of Colorado School of Medicine, where she provides culturally responsive, trauma-focused psychotherapy. Her research examines the intersectional identity experiences of marginalization, particularly at the intersection of race, ethnicity, gender, and sexuality with a unique specialization in Pilipinx American psychology.