Cableizer ®

Diameter over insulation incl. 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
Formulas
$d_{c}+2\left(t_{ct}+t_{cs}+t_{ins}+t_{is}\right)$
Related
$d_{c}$
External diameter conductor [mm]
$t_{cs}$
Thickness conductor shield [mm]
$t_{ct}$
Thickness conductor tape [mm]
$t_{ins}$
Thickness insulation [mm]
$t_{is}$
Thickness insulation screen [mm]
Used in
$C_{cs}$
Capacitance conductor - shield [F/m]
$D_{lay,3c}$
Diameter of mechanical neutral line [mm]
$D_{scb}$
Diameter over screen bedding [mm]
$J_{i}$
Moment of inertia (bending) insulation [mm$^4$]
$J_{sc}$
Moment of inertia (bending) metallic screen [mm$^4$]
$s_{c}$
Separation of conductors in a system [mm]
$T_{i}$
Thermal resistance insulation [K.m/W]
$T_{scb}$
Thermal resistance screen bedding [K.m/W]