GMR of Bundled Conductors Calculator

Calculate the effective Geometric Mean Radius (GMR) of bundled conductors.

For a 2-conductor bundle: $GMR = \sqrt{r \times D}$ For a 3-conductor bundle (equilateral triangle): $GMR = {(r \times D^{2})}^{\frac{1}{3}}$

Step 1: Enter Bundle Parameters

Select Bundle Configuration:

2-Conductor 3-Conductor (Equilateral)

Conductor Self GMR,

r

(m):

Example: 0.01 m (1 cm)

Conductor Spacing,

D

(m):

For 2-conductor: center-to-center distance; for 3-conductor (equilateral), spacing between any two conductors.

Line Length,

L

(m):

Example: 100 m