Underground cables Resistance at 20°C L RO = KS L= lenght in km K=conductivity S=cross section in mm2 • Resistance for A

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Underground Cables Resistance At 20 C L Ro Ks L Lenght In Km K Conductivity S Cross Section In Mm2 Resistance For A 1 (38.63 KiB) Viewed 41 times

Underground cables Resistance at 20°C L RO = KS L= lenght in km K=conductivity S=cross section in mm2 • Resistance for AC Rac = 1.1 x Ro Inductance per km(one phase and 3ph symetric cables) = r d L = (4.6log - +0.5) x 10-4 L=Henry/km d=distance between conductors(cm) r=wire radius(cm) Inductive Reactance XL = 2nfl = Formulas given in above, find and formulate capacitance per unit length of single-phase and three- phase HV cables. By using the inductance per unit length value, find the formula for the resonant frequency of the cable per unit length.