Search
Close this search box.

Search

Search
Close this search box.
Home » BS Types » BS 6708 TYPE 621

BS 6708 TYPE 621

Mining Certficated Cables

Certificates :

APPLICATION

Used for supplying excavating, crushing machines
and equipment.

CONDUCTOR : Electrolytic, stranded, tinned copper wire IEC 60228 Class 5
INSULATION : EPR
LAYUP : Cores are laid up over each other.
BEDDING : Rubber based bedding compound.
ARMOUR : Galvanized steel pliable armour.
OUTER SHEATH : Heavy duty chloroprene outer sheath.

RELATED STANDARDS : BS 6708
RATED VOLTAGE : 3800/6600 V
TEST VOLTAGE : 15 kV

Cross Section4×354×504×704×954×1204×150
Conductors
Number and cross sectionmm24×354×504×704×954×1204×150
Strandingmm276/0,40396/0,40360/0,50475/0,50608/0,50756/0,50
Conductor diameterNom. mm8.4010.1011.9013.9015.5017.20
Insulation thicknessmm5.05.05.05.05.05.0
Cable details
Radial thickness of inner sheathmm3.85.05.05.05.05.0
Min. inner sheath diametermm53.860.565.670.774.379.2
Max. inner sheath diametermm56.863.569.474.578.183.2
Size of armourmm7/0,907/1,257/1,257/1,257/1,257/1,25
Outer sheath thicknessmm6.06.37.07.57.88.3
Min. overall diametermm71.281.087.193.297.4103.3
Max. overall diametermm75.285.391.497.5101.7107.6
Min. bending radiusmm7528539149751.0171.076
Appx. cable weightkg/km8.911.11314.0520.622
Copper weightkg/km1.351.952.73.74.655.8
Electrical details
“Continuous current
rating at 25°C Ambient”
A135170205250295320
Max. DC resistance at 20°C
ConductorsΩ /km0.5650.3930.2770.2100.1640.132
ArmourΩ /km0.70.50.430.390.380.35
We use cookies on our website to provide you a better experience. For detailed information please visit our Cookie Policy and Clarification Text.