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Specific short-circuit parameter

Constant depending on the material of the current carrying component.

Symbol
$K_k$
Unit
A.s$^{1/2}$/mm$^2$
Formulae
$\sqrt{\frac{{10}^{-12}\sigma_{kc} \left(\beta_k+20\right)}{\rho_{k20}}}$
Related
$\beta_k$
Reciprocal of temperature coefficient of resistance [K]
$\rho_{k20}$
Electrical resistivity of metallic component [$\Omega$.m]
$\sigma_{kc}$
Volumetric heat capacity of metallic component [J/(K.m$^3$)]
Used in
$I_{kAD}$
Short-circuit current (adiabatic) [kA]
$\theta_{kf}$
Final temperature [°C]