Cableizer ®

Thermal capacitance B transient thermal circuit

Symbol
$Q_{B}$
Unit
J/(m.K)
Formulas
$Q_{B,i}+Q_{B,s}+Q_{B,f}+Q_{B,ab}+Q_{B,j}+Q_{B,d}$Cableizer
$\left(\left(1-p_{i}\right) Q_{i,t}+\frac{Q_{sc}+Q_{sh}+p_{j} Q_{j}}{q_{1}}\right) \frac{1}{n_{c}}$IEC 60853
Related
$n_{c}$
Number of conductors cable
$p_{i}$
Apportioning factor insulation
$p_{j}$
Apportioning factor jacket
$q_{1}$
Ratio of losses screen bedding,screen serving
$Q_{A}$
Thermal capacitance A transient thermal circuit [J/(m.K)]
$Q_{B,ab}$
Thermal capacitance B transient thermal circuit, armour bedding [J/(m.K)]
$Q_{B,d}$
Thermal capacitance B transient thermal circuit, duct [J/(m.K)]
$Q_{B,f}$
Thermal capacitance B transient thermal circuit, filler [J/(m.K)]
$Q_{B,i}$
Thermal capacitance B transient thermal circuit, insulation [J/(m.K)]
$Q_{B,j}$
Thermal capacitance B transient thermal circuit, jacket [J/(m.K)]
$Q_{B,s}$
Thermal capacitance B transient thermal circuit, screen/sheath [J/(m.K)]
$Q_{i,t}$
Thermal capacitance insulation (IEC 60853) [J/(m.K)]
$Q_{j}$
Thermal capacitance jacket [J/(m.K)]
$Q_{sc}$
Thermal capacitance screen [J/(m.K)]
$Q_{sh}$
Thermal capacitance sheath [J/(m.K)]
Used in
$M_{0}$
Coefficient M partial transient temperature rise [s]
$N_{0}$
Coefficient N partial transient temperature rise [s$^2$]