Concentric and Split Concentric Cables-BS

Overview

Parameter Inquiry

Overview

Application

Used by distribution network operators when providing the final connection to domestic properties. Also suitable for sub main distribution and particularly used within high-rise buildings and street lighting systems.

Standard

BS 7870

Construction

Type I Aluminum Concentric

Concentric and Split Concentric Cable-BS-1.jpg

Conductor : Class 1 solid aluminum conductor

Insulation: XLPE (Cross-Linked Polyethylene)

Concentric Conductor: Single layer of plain copper wires

Sheath: Black PVC (Polyvinyl Chloride)/Orange LSZH(Low Smoke Zero Halogen)

Type II Aluminum Split Concentric

Concentric and Split Concentric Cable-BS-2.jpg

Conductor : Class 1 solid aluminum conductor

Insulation: XLPE (Cross-Linked Polyethylene)

Neutral Conductor: Plain copper wires covered a blue polymeric compound

Earth Continuity Conductor: Plain copper wires

String Separator: Non-hygroscopic separator

Sheath: Black PVC (Polyvinyl Chloride)/Orange LSZH(Low Smoke Zero Halogen

Type III Copper Concentric

Concentric and Split Concentric Cable-BS-3.jpg

Conductor: Class 2 stranded copper conductor

Insulation: XLPE (Cross-Linked Polyethylene)

Concentric Conductor: Single layer of plain copper wires

Sheath: Black PVC (Polyvinyl Chloride)/ LSZH(Low Smoke Zero Halogen

Type IV Copper Split Concentric

Concentric and Split Concentric Cable-BS-4.jpg

Conductor : Class 2 stranded copper conductor

Insulation: XLPE (Cross-Linked Polyethylene)

Neutral Conductor: Plain copper wires covered a blue polymeric compound

Earth Continuity Conductor: Plain copper wires

String Separator: Non-hygroscopic separator

Sheath: Black Black PVC (Polyvinyl Chloride)/LSZH(Low Smoke Zero Halogen)

Parameter

Type I Aluminum Concentric

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	NOMINAL OVERALL DIAMETER	NOMINAL WEIGHT	MAXIMUM DC RESISTANCE OF CONDUCTOR AT 20°C	MAXIMUM DC RESISTANCE OF CONCENTRIC CONDUCTOR AT 20°C	CURRENT CARRYING CAPACITY Amps
NO. OF CORES	mm2	mm	kg/km	ohms/km	ohms/km	In Air	Clipped Direct	Enclosed in Conduit on a Wall
1	25	13	300	1.2	1.3	127	119	105
1	35	14	390	0.868	0.91	158	147	128
3	25	23	650	1.2	1.3	97	90	84
3	35	25	820	0.868	0.91	120	112	103

Type II Aluminum Split Concentric PARAMETER

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	NOMINAL OVERALL DIAMETER	NOMINAL WEIGHT	MAXIMUM DC RESISTANCE OF AT 20°C ohms/km			CURRENT CARRYING CAPACITY Amps
NO. OF CORES	mm2	mm	kg/km	CONDUCTOR	Neutral	Earth	In Air	Clipped Direct	Enclosed in Conduit on a Wall
1	25	15	490	1.2	1.2	1.2	127	119	105
1	35	16	610	0.868	0.76	1.2	158	147	128
3	25	23.5	830	1.2	1.2	1.2	97	90	84
3	35	26	1030	0.868	0.76	1.2	120	112	103

Type III Copper Concentric PARAMETER

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	NOMINAL OVERALL DIAMETER	NOMINAL WEIGHT	MAXIMUM DC RESISTANCE OF CONDUCTOR AT 20°C	MAXIMUM DC RESISTANCE OF CONCENTRIC CONDUCTOR AT 20°C	CURRENT CARRYING CAPACITY Amps
NO. OF CORES	mm2	mm	kg/km	ohms/km	ohms/km	In Air	Clipped Direct	Enclosed in Conduit on a Wall
1	4	8.5	140	4.61	4.8	42	41	37
1	16	12	370	1.15	1.2	100	99	88
1	25	14	550	0.727	0.76	135	130	117

Type IV Copper Split Concentric PARAMETER

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	NOMINAL OVERALL DIAMETER	NOMINAL WEIGHT	MAXIMUM DC RESISTANCE OF CONDUCTOR AT 20°C ohms/km		CURRENT CARRYING CAPACITY Amps
NO. OF CORES	mm2	mm	kg/km	Metal-Coated Wires	Plain Wires	In Air	Clipped Direct	Enclosed in Conduit on a Wall
1	4	10	190	4.8	4.8	42	41	37
1	16	14	530	1.2	1.2	100	99	88
1	25	16	710	1.2	0.76	135	130	117
3	35	28.5	1900	0.76	0.55	129	120	110

Concentric and Split Concentric Cables-BS

Type II Aluminum Split Concentric PARAMETER

Type III Copper Concentric PARAMETER

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