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Home » Mining Cables » BS 6708 TYPE 70, TYPE 71

BS 6708 TYPE 70, TYPE 71

APPLICATION

Used for supplying excavating, crushing machines and equipment, as well as coalface lighting.

Certificates
Technical Information

CONDUCTOR : Electrolytic, stranded, tinned copper wire IEC 60228 Class 5
INSULATION : EPR
LAYUP : All cores are laid up in contact with 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 : 320/550 V
TEST VOLTAGE : 1.5 kV

Cross Section4×45×4
Conductors
Number and cross sectionmm24×45×4
Insulation thicknessmm1.01.0
Cable details
Radial thickness of inner sheathmm2.02.0
Min. inner sheath diametermm15.817.2
Max. inner sheath diametermm17.819.2
Size of armourmm7/0,457/0,45
Outer sheath thicknessmm2.52.5
Min. overall diametermm23.524.9
Max. overall diametermm26.027.4
Min. bending radiusmm234247
Max. pulling tensionkgf96100
Appx. cable weightkg/km1.11.23
Copper weightkg/km154192
Electrical details
“Continuous current rating at 25°C Ambient”A2828
Max. DC resistance at 20°C
Phase ConductorΩ /km5.095.09
ArmourΩ /km5.074.63

 

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