Loop: Impedance Calculation ~upd~

[ Z_s \times I_a \leq V_0 ]

The total opposition to current flow along this complete path is the . It is a complex quantity (combining resistance and reactance), though at power frequency (50/60 Hz) and for most practical calculations, the resistive component dominates in smaller cross-section circuits. 2. The Mathematical Basis of Calculation The loop impedance is calculated as the sum of individual impedances along the fault path. The fundamental equation is: loop impedance calculation

or more practically, ,

For safety, the following condition must be satisfied: [ Z_s \times I_a \leq V_0 ] The

( I_f = 230 / 1.796 \approx 128 , A ).

[ Z_{internal} \approx \frac{2 \times L \times \rho}{A} ] loop impedance calculation