Inductance of Double Circuit Transmission Line Calculator
This Calctown Calculator calculates the inductance of a double circuit transmission line.
Here µ0 = 4p * 10-7. Please enter the RELATIVE permeability accordingly.
Inductance of Double Circuit Line Transmission Calculator

Click here to view image
where
GMDa = geometric mean distance of phase a
GMRa = geometric mean radius of phase a
d = distance between adjacent lines
r = radius of line
r' = effective radius
μr = relative permeability
La = inductance of phase a