1 1 A three-phase transposed line is composed of three bundled ACSR conductor per phase with flat horizontal -spacing as shown in figure (1). The phase spacing is 14 m while the bundle spacing is 45 cm. The conductors have a diameter of 2.1793 cm and a GMR of 0.8839 cm. 45cm a D12 = 14m D13 = 28m Figure (1). The equivalent geometric mean distance (GMDa) in m is: The equivalent geometric mean radius (GMRL) to calculate the line inductance in m is: D23 = 14m The equivalent geometric mean radius (GMRC) to calculate the line capacitance in m is: The per phase transmission line inductance in mH/km is: The per phase transmission line capacitance in uF/km is: