CALCULATIONS ACCORDING TO IEEE GUIDE 1584, 2018

The authors and researchers all over the world expressed concerns on IEEE Guide 1584, 2002 methodology, test methods, and calculations of incident energy for arc flash hazard. This chapter details the fundamental aspect, the conceptual background, the calculation procedures and finally some examples of calculation. The model is a statistically derived model, with curve fitting program. The 2002 edition of 1584 divided the system grounding into two categories: ungrounded and grounded. The high‐resistance and low‐resistance grounded systems were considered ungrounded and solidly grounded systems as grounded. The arc flash hazard was calculated higher in ungrounded systems. The 2002 edition provided one equation for the calculation of arcing current. The variation in arcing current was accounted for by calculating arcing time at 80% of the calculated arcing current. The 2018 edition provides elaborate arcing current calculations.