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1. The Arc Flash Analytic software has been developed based on IEEE 1584 Guide for Performing Arc-Flash Hazard Calculations as an easy to use and comprehensive tool for calculating incident energy and arc flash boundary, for determining limited, restricted, prohibited approach boundaries and hazard risk category required by NFPA 70E, NEC / CEC and OSHA when work is to be performed on or near the energized equipment.
2. The arc flash software takes equipment configuration, gap between electrodes, grounding type, short circuit fault current value and system voltage on input, and determines arcing fault current at potential point of fault.
3. The iAFA arc flash software predicts arcing fault current for a given configuration and amount of the available 3-phase short circuit current.
4. The IEEE 1584 proposed solution is to make two arc current and energy calculations: one using the calculated expected arc current and another one using a reduced arc current that is 15% lower.
5. For protective devices operating in the steep portion of their time-current curves, a small change in current causes a big change in corresponding operating time.
6. Incident energy is linear with time, and consequently arc current variations may have a big effect on incident energy.
7. The arc flash software enables calculations for both of the above considered cases.
8. For cases where voltage is over 15kV or gap is outside the range of the model, the theoretically derived Lee method can be applied and it is included in iAFA V1.
9. Next, the incident energy, arc flash boundary, shock protection boundaries and level of personnel protective equipment are determined based on equipment configuration, selected upstream protection device ratings and working distance. * Collect information, take photos of switchgear, MCC's etc. * Provide a safer working environment by specifying the proper level of personal protective equipment. * Design safer power systems while insuring compliance with NEC 110.