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BS 6708 TYPE 630, TYPE 631

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Used for supplying excavating, crushing machines and equipment.

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CONDUCTOR : Electrolytic, stranded, tinned copper wire IEC 60228 Class 5
INSULATION : EPR
SCREEN : Tinned copper / Nylon braided screen over phase cores. Ground core in Type 631 is not screened.
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 : 3800/6600 V
TEST VOLTAGE : 15 kV

Cross Section		3×35	3×50	3×70	3×95	3×120	3×150	3×50+35	3×70+50
Phase Conductors
Number and cross section	mm2	3×35	3×50	3×70	3×95	3×120	3×150	3×50	3×70
Insulation thickness	mm	5.0	5.0	5.0	5.0	5.0	5.0	5.0	5.0
Pilot Conductor
Number and cross section	mm2	–	–	–	–	–	–	1×35	1×50
Stranding	mm	–	–	–	–	–	–	276/0,40	396/0,40
Conductor diameter	Nom. mm	–	–	–	–	–	–	8.40	10.10
Insulation thickness	mm	–	–	–	–	–	–	5.0	5.0
Cable details
Radial thickness of inner sheath	mm	3.8	3.8	5.0	5.0	5.0	5.0	5.0	5.0
Min. inner sheath diameter	mm	53.1	6.0	67.0	72.3	75.5	80.0	65.4	70.5
Max. inner sheath diameter	mm	56.1	60.0	67.0	72.3	75.5	80.0	69.2	74.3
Size of armour	mm	7/0,90	7/0,90	7/1,25	7/1,25	7/1,25	7/1,25	7/0,90	7/1,25
Outer sheath thickness	mm	6.0	6.3	6.8	7.3	7.6	8.0	6.9	7.4
Min. overall diameter	mm	70.5	75.0	85.1	90.6	94.4	99.6	86.7	92.8
Max. overall diameter	mm	74.5	79.3	84.9	94.9	98.7	103.9	91.0	97.1
Min. bending radius	mm	894	952	1.019	1.139	1.185	1.247	1.092	1.166
Appx. cable weight	kg/km	8.4	9.85	12.05	13.85	19.2	21.2	12.1	14.25
Copper weight	kg/km	1.01	1.45	2.02	2.75	3.46	4.33	2.1	3.1
Electrical details
“Continuous current rating at 25°C Ambient”	A	135	170	205	250	295	320	170	205
Max. DC resistance at 20°C
Phase conductors	Ω /km	0.565	0.393	0.277	0.210	0.164	0.132	0.393	0.277
Earth conductor	Ω /km	–	–	–	–	–	–	0.565	0.393
Armour	Ω /km	0.76	0.71	0.46	0.43	0.41	0.39	0.45	0.42
3 screens in parallel connection	Ω /km	0.10	0.88	0.72	0.78	0.62	0.67	0.45	0.42

BS Types

BS 6708 TYPE 630, TYPE 631

Certificates

Technical Information

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