Cableizer ®

Incremental heat generated

Incremental heat generated due to change of conductor resistance.

Symbol
$\Delta W$
Unit
W
Formulas
$\frac{R_{c} \alpha_{c} {I_{c}}^2}{1+\alpha_{c} \left(\theta_{cmax}-\Delta \theta_{0x}-20\right)}$first step
$\Delta W \left(1-\frac{\Delta \theta_{0x}}{\Delta \theta_{max}-\Delta \theta_{d}}\right)$second step
Related
$\alpha_{c}$
Temperature coefficient conductor material [1/K]
$\Delta \theta_{0x}$
Temperature rise by crossing heat sources [K]
$\Delta \theta_{d}$
Temperature rise dielectric losses [K]
$\Delta \theta_{max}$
Maximum permissible conductor temperature rise [K]
$I_{c}$
Conductor current [A]
$R_{c}$
Electrical resistance conductor [$\Omega$/m]
$\theta_{cmax}$
Max. temperature conductor [°C]
Used in
$\gamma_{X}$
Attenuation factor for crossing [1/m]