BS 6708 Type 62, Type 63, Type 64 Mining Cable

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

Rated voltage640/1100 V

ConductorElectrolytic, stranded, tinned copper wire IEC 60228 Class 5

InsulationEPR

Outer sheathHeavy duty chloroprene outer sheath.

Product Overview

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

Rated voltage	640/1100 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 and pilot cores
Layup	All cores are laid up in contact with each other.
Bedding	Rubbe based bedding compound.
Armour	Galvanized steel pliable armour.
Related standards	BS 6708
Test voltage	2,5 kV

Cross Section		2×4	3×4	4×4
Conductors
Number and cross section	mm2	2×4	3×4	4×4
Insulation diameter	Nom. mm	4.80	4.80	4.80
Screen diameter	Nom. mm	6.00	6.00	6.00
Cable details
Min. inner sheath diameter	mm	16.2	17.1	18.7
Max. inner sheath diameter	mm	18.2	19.1	20.7
Min. overall diameter	mm	23.9	24.8	26.4
Max. overall diameter	mm	26.4	27.3	29.9
Min. bending radius	mm	270	280	290
Max. pulling tension	kgf	48	72	96
Appx. cable weight	kg/km	1.08	1.23	1.4
Copper weight	kg/km	132	200	264
Electrical details
“Continuous current rating at 25°C Ambient”	A	28	28	28
Max. DC resistance at 20°C
Phase Conductor	Ω /km	5.09	5.09	5.09
screens in parallel connection	Ω /km	5.5	3.9	2.8
Armour	Ω /km	4.91	4.63	4.16
Nom. reactance at 50Hz	Ω /km	0.119	0.119	0.119
Nom. reactance at 60Hz	Ω /km	0.143	0.143	0.143
Min. insulation resistance at 20°C	M Ω /km	590	590	590
3 phase voltage drop on full load current	mV/A/m	12,38*	10.72	10.72

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