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, titled "Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects," provides the methodology for calculating the maximum current an electrical conductor can withstand during a short circuit without exceeding its thermal limits. Key Calculation Methodology

): This assumes no heat is lost to the surrounding environment (adiabatic conditions). It is calculated using the formula: iec 60949 pdf free download exclusive

Accounting for non-adiabatic effects allows engineers to sometimes use smaller conductor cross-sections for specific fault durations, potentially reducing material costs. taking into account non-adiabatic heating effects