3/28/2024 0 Comments Welding arc flash boundary chart![]() ![]() However, in most cases three phase short circuit currents typically give the greatest possible short circuit energy and can be considered as the worst-case. The single-phase short-circuit current is used to conduct the single-phase arc flash calculation. The three phase and single-phase short-circuit currents need to be considered. The calculation should take into account the system data and modes of operation. Step 3: Determine the bolted fault currentsĬalculate the short-circuit current.
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