Cableizer ®

Apparent thermal resistance b

This is the apparent thermal resistance $T_{b0}$ used to calculate cable partial transient temperature rise acc. to IEC 60853-2.

Symbol
$T_{b0}$
Unit
K.m/W
Formulas
$T_{A}+T_{B}-T_{a0}$
Related
$T_{A}$
Thermal resistance A transient thermal circuit [K.m/W]
$T_{a0}$
Apparent thermal resistance a [K.m/W]
$T_{B}$
Thermal resistance B transient thermal circuit [K.m/W]
Used in
$\alpha_{t}$
Conductor to surface attainment factor
$\delta \theta_{c,t,o}$
Transient temperature rise conductor by ohmic losses [K]