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Radius above the inner semi-conducting layer

Radius of the conductor or the conductor screen (inner semi-conducting layer, if existing).

Symbol
$r_{isc}$
Unit
mm
Formulae
$\frac{d_x}{2}+t_{ct}-t_{cs}$Multi-core cables, sector-shaped conductors
$\frac{d_c}{2}+t_{ct}+t_{cs}$general case
Related
$d_c$
External diameter of conductor [mm]
$d_x$
Equivalent diameter of a conductor [mm]
$t_{cs}$
Thickness of conductor shield [mm]
$t_{ct}$
Thickness of conductor tape [mm]
Used in
$a_i$
Parameter a for radial derivative of dielectric losses
$C_b$
Capacitance of insulation [F/m]
$C_E$
Capacitance to earth [F/m]
$\delta_i$
Electrical thickness of insulation material [m]
$\Delta w_d$
Increment of volumetric density of dielectric losses in HVDC cables [W/m$^3$]
$E_i$
Electrical field strength [kV/mm]
$G$
Conductance [S/m]
$\lambda_i$
Parameter $\lambda$ for linear density of dielectric losses
$w_d$
Volumetric density of dielectric losses [W/m$^3$]