The standard reinforces the importance of a high-resistivity surface layer (crushed rock) on substation surfaces. It provides corrected formulas for the derating factor (Cs) that are easier to apply iteratively. The 2013 version explicitly warns engineers about the reduction in rock resistivity when wet or contaminated.
The 2013 edition refines the allowable body current based on updated biomedical research. The standard now uses a 50 kg (110 lb) and 70 kg (154 lb) body weight model more accurately. The tolerable step and touch voltages are recalculated using these refined models, generally resulting in slightly more conservative (safer) limits than the 2000 edition for the same fault clearing time. ieee standard 80-2013 pdf
Do not rely on outdated copies or unverified online scans. Secure an official PDF from IEEE Xplore, keep it bookmarked on your workstation, and use it to build grounding grids that ensure one simple outcome: everyone walks home safely at the end of the day. The standard reinforces the importance of a high-resistivity
Officially titled "IEEE Guide for Safety in AC Substation Grounding," this 2013 revision (often referred to by its nickname, the "Green Book") is the cornerstone of ground grid design. For engineers, students, and safety officers, obtaining and understanding the is a critical task. The 2013 edition refines the allowable body current