Cableizer

Thermal resistance filler

Thermal resistance of the filler.

Symbol
$T_{f}$
Unit
K.m/W
Formulas
$\frac{\rho_{f}}{6\pi} G_{2}$three-core cables type SS with sheath or type SS/SC without sheath with tape screen
$\frac{\rho_{f}}{2\pi} \ln\left(\frac{D_{f}}{D_{f}-2t_{f}}\right)$three-core cables with screen, without sheath, without armour
$0$otherwise
Related
$D_{f}$
Diameter over filler [mm]
$G_{2}$
Geometric factor $G_2$ cables with separate sheaths
$\pi$
Archimedes' constant $\pi$
$\rho_{f}$
Thermal resistivity filler [K.m/W]
$t_{f}$
Thickness of filler/belt insulation [mm]
Used in
$R_{c3}$
Thermal resistance part 3 [K.m/W]
$T_{3}$
Thermal resistance jacket [K.m/W]
$\theta_{sh}$
Temperature sheath [°C]