Question

For bundled-conductor configurations, the expressions for calculating D_SL in inductance calculations and D_SC in capacitance calculations are analogous, except that the conductor outside radius rreplaces the conductor GMR, D_S.

(a) True

(b) False

Short answer

Therefore the correct option is (a) True

Step-by-step solution

Define bundled capacitance

To calculate the capacitance of bundled conductor line with two conductors per bundle, the balanced positive-sequence charges are added, with the assumption that the phase spacings are much larger than the bundle spacings D_sc.

This is because D_sc are analogous to D_SL, except that the conductor outside radius r replaces the conductor’s GMR D_S.

Explain further for unequal phase spacing 

However, in the case of three-phase lines which have unequal phase spacing, balanced positive-sequence charges are not present for balanced positive-sequence voltages.

Thus, the phase-to-neutral capacitances are unequal in this case.

Hence, the correct option (a).