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Diameter over insulation including insulation screen

This is the diameter over the insulation including insulation screen, per phase. This value is used for thermal calculations.

Symbol
$D_i$
Unit
mm
Formulae
$d_c+2\left(t_{ct}+t_{cs}+t_{ins}+t_{is}\right)$
Related
$d_c$
External diameter of conductor [mm]
$t_{cs}$
Thickness of conductor shield [mm]
$t_{ct}$
Thickness of conductor tape [mm]
$t_{ins}$
Thickness of insulation [mm]
$t_{is}$
Thickness of insulation screen [mm]
Used in
$A_i$
Cross-sectional area of insulation [mm$^2$]
$C_{cs}$
Capacitance conductor - shield [F/m]
$D_{lay,3c}$
Diameter of mechanical neutral line [mm]
$D_{scb}$
Diameter over screen bedding [mm]
$p_i$
Factor apportioning the insulation
$s_c$
Separation of conductors in a system [mm]
$T_i$
Thermal resistance of insulation [K.m/W]
$T_{scb}$
Thermal resistance of screen bedding [K.m/W]