Cableizer ®

Diameter over armour bedding 1

Cable with double layer armour applying CIGRE TB 880 Guidance Point 15

Symbol
$D_{ab,1}$
Unit
mm
Formulas
$F_x D_{shj}+2\left(t_f+t_{ab,1}\right)$multi-core cables type SS
$D_{sh}+2t_{ab,1}$otherwise
Related
$D_{sh}$
Diameter over sheath [mm]
$D_{shj}$
Diameter over sheath jacket [mm]
$F_x$
Geometrical distance factor for multi-core cables
$t_{ab,1}$
Thickness armour bedding 1 [mm]
$t_f$
Thickness of filler/belt insulation [mm]
Used in
$D_{ab,2}$
Diameter over armour bedding 2 [mm]
$T_{ab,1}$
Thermal resistance armour bedding 1 [K.m/W]