BS 6708 Type 730 Mining Cable

Used as trailing cable for supplying large machines.

Rated voltage3800/6600 V

ConductorElectrolytic, stranded, tinned copper wire IEC 60228 Class 5

InsulationEPR

Outer sheathHeavy duty chloroprene outer sheath.

Product Overview

Used as trailing cable for supplying large machines.

Rated voltage	3800/6600 V
Conductor	Electrolytic, stranded, tinned copper wire IEC 60228 Class 5
Insulation	EPR
Outer sheath	Heavy duty chloroprene outer sheath.
Screen	Tinned copper / Nylon braided screen over phase cores.
Layup	All cores are laid up around the bare copper earth core and in contact with each other.
Bedding	Rubber based bedding compound.
Related standards	BS 6708
Test voltage	15 kV

Cross Section		3×35	3×50	3×70	3×95	3×120+16	3×150+16
Phase Conductors
Number and cross section	mm2	3×35	3×50	3×70	3×95	3×120	3×150
Insulation thickness	mm	5.0	5.0	5.0	5.0	5.0	5.0
Earth Conductor
Number and cross section	mm2	–	–	–	–	1×16	1×16
Stranding	mm	–	–	–	–	126/0,40	126/0,40
Conductor diameter	Nom. mm	–	–	–	–	5.50	5.50
Insulation thickness	mm	–	–	–	–	bare	bare
Cable details
Outer sheath thickness	mm	6.0	6.3	6.8	7.3	7.6	8.0
Min. overall diameter	mm	57.5	62.0	67.5	73.1	76.9	82.1
Max. overall diameter	mm	60.5	65.0	71.4	76.9	80.9	86.0
Min. bending radius	mm	605	650	714	769	809	860
Appx. cable weight	kg/km	4.8	5.9	7.1	8.5	9.95	11.4
Copper weight	kg/km	1.3	1.8	2.5	3.25	4.2	5
Electrical details
“Continuous current rating at 25°C Ambient”	A	135	170	205	250	295	320
Max. DC resistance at 20°C
Phase conductors	Ω /km	0.565	0.393	0.277	0.210	0.164	0.132
3 screens and earth (if applied) in parallel connection	Ω /km	0.81	0.78	0.55	0.42	0.32	0.26

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