Cableizer

Diameter of mechanical neutral line

The twisting of three cores are assumed to occur at the mechanical neutral line which is the location where a centre circle divides the cores into 2 equal large parts.

Symbol
$D_{lay,core}$
Unit
mm
Formulas
$k_{core} D_{i}$type CC
$k_{core} D_{scs}$type SC
$k_{core} D_{shj}$type SS
Related
$D_{i}$
Diameter over insulation incl. insulation screen [mm]
$D_{scs}$
Diameter over screen serving [mm]
$D_{shj}$
Diameter over sheath jacket [mm]
$k_{core}$
Factor of mechanical neutral line
Used in
$F_{lay,core}$
Effective length per unit lay length twisted conductors