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Understanding IEC 60949: Calculation of Thermally Permissible Short-Circuit Currents
The standard uses a specific formula to find the adiabatic current based on material properties:
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Where to Find a Free PDF Download of IEC 60949
cap I sub cap A cap D end-sub equals the fraction with numerator cap K center dot cap S and denominator the square root of t end-root end-fraction center dot the square root of l n open paren the fraction with numerator theta sub f plus beta and denominator theta sub i plus beta end-fraction close paren end-root Description cap I sub cap A cap D end-sub Adiabatic short-circuit current (A) Cross-sectional area ( m m squared Duration of short circuit (s) Initial and Final temperatures ( raised to the composed with power cap C Material-dependent constants (e.g., Copper Primary Applications IEC 60949 Short-Circuit Current Calculation | PDF - Scribd iec 60949 pdf free top download
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