Capacitance of Asymmetric Transposed Three Phase Transmission Line Calculator

Calculate the total capacitance of an asymmetric (irregular) three-phase transmission line.

Using the formulas:
\[ C’ = \frac{6\pi\epsilon_0\,\epsilon_r}{\ln\left(\frac{d_{ab}\,d_{bc}\,d_{ca}}{r_a\,r_b\,r_c}\right)} \]
\[ C_{\text{total}} = C’ \times L \] with \(\epsilon_0 = 8.854 \times 10^{-12}\, \text{F/m}\).

Step 1: Enter Line Parameters

Distance between Conductor A & B, \( d_{ab} \) (m):

Example: 1 m

Distance between Conductor B & C, \( d_{bc} \) (m):

Example: 1 m

Distance between Conductor C & A, \( d_{ca} \) (m):

Example: 1 m

Conductor A Effective Radius, \( r_a \) (m):

Example: 0.01 m

Conductor B Effective Radius, \( r_b \) (m):

Conductor C Effective Radius, \( r_c \) (m):

Transmission Line Length, \( L \) (m):

Example: 100 m

Relative Permittivity, \( \epsilon_r \):

For air, use 1; for other media, use the appropriate value.

Step 1: Enter Line Parameters

Calculated Total Capacitance