GMR of Two-Layer ACSR Calculator

Calculate the effective Geometric Mean Radius (GMR) of a two-layer ACSR conductor.

Using the formula:
\[ \text{GMR}_{\text{eff}} = \left( \text{GMR}_{\text{steel}}^{n_s} \times R_{\text{alu}}^{n_a} \right)^{\frac{1}{n_s+n_a}} \] where:
\( \text{GMR}_{\text{steel}} \) is the steel core GMR, \( R_{\text{alu}} \) is the effective radius for the aluminum layer, \( n_s \) is the number of steel core elements, and \( n_a \) is the number of aluminum strands.

* Enter values in meters for radii and the counts for elements.

Step 1: Enter Conductor Parameters

Steel Core GMR, \( \text{GMR}_{\text{steel}} \) (m):

Example: 0.005 m

Number of Steel Elements, \( n_s \):

Example: 1

Aluminum Layer Effective Radius, \( R_{\text{alu}} \) (m):

Example: 0.03 m

Number of Aluminum Strands, \( n_a \):

Example: 26

Step 1: Enter Conductor Parameters

Calculated Effective GMR