Thermal capacitance of conductor (IEC 60853)

The capacitance of the equivalent conductor for multi-core cables is equal to the sum of the capacitances of the conductors plus the capacitanc of that portion of the insulation which is enclosed within the perimeter of the equivalent conductor.

Symbol
$Q_{ct}$
Unit
J/(m.K)
Formulae
 $\frac{\sigma_c A_c}{{10}^6}$ Single-core cables $\frac{\sigma_c A_c}{{10}^6}+\frac{\sigma_i \left({d_{ct}}^2-n_c {d_c}^2\right)}{{10}^6}$ Multi-core cables
Related
Used in
$Q_A$