Concentric Cables

Concentric and Split Concentric Cables-BS

Concentric and Split Concentric Cables 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.

Standards: BS 7870

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Concentric and Split Concentric Cables-BS

Aluminum or Copper Concentric and Split Concentric Cables

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

Parameter	Specification
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

PARAMETER

Type I Aluminum Concentric

NO. OF CORES	NOMINAL CROSS SECTIONAL AREAmm2	NOMINAL OVERALL DIAMETERmm	NOMINAL WEIGHTkg/km	MAXIMUM DC RESISTANCE OF CONDUCTOR AT 20°Cohms/km	MAXIMUM DC RESISTANCE OF CONCENTRIC CONDUCTOR AT 20°Cohms/km	CURRENT CARRYING CAPACITYAmps
						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

Conductor Operating Temperature: 90°C Ambient Temperature: 30°C

Type II Aluminum Split Concentric

Parameter	Specification
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 II Aluminum Split Concentric PARAMETER

NO. OF CORES	NOMINAL CROSS SECTIONAL AREAmm2	NOMINAL OVERALL DIAMETERmm	NOMINAL WEIGHTkg/km	MAXIMUM DC RESISTANCE OF AT 20°Cohms/km			CURRENT CARRYING CAPACITYAmps
				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

Conductor Operating Temperature: 90°C Ambient Temperature: 30°C

Type III Copper Concentric

Conductor:Class 2 stranded copper conductor

Parameter	Specification
Insulation	XLPE (Cross-Linked Polyethylene)
Concentric Conductor	Single layer of plain copper wires
Sheath	Black PVC (Polyvinyl Chloride)/ LSZH(Low Smoke Zero Halogen

Type III Copper Concentric PARAMETER

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA mm2	NOMINAL OVERALL DIAMETER mm	NOMINAL WEIGHT kg/km	MAXIMUM DC RESISTANCE OF CONDUCTOR AT 20°C ohms/km	MAXIMUM DC RESISTANCE OF CONCENTRIC CONDUCTOR AT 20°C ohms/km	CURRENT CARRYING CAPACITY Amps
						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

Conductor Operating Temperature: 90°C Ambient Temperature: 30°C

Type IV Copper Split Concentric

Parameter	Specification
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

Type IV Copper Split Concentric PARAMETER

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA mm2	NOMINAL OVERALL DIAMETER mm	NOMINAL WEIGHT kg/km	MAXIMUM DC RESISTANCE OF CONDUCTOR AT 20°C ohms/km		CURRENT CARRYING CAPACITY Amps
				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

Conductor Operating Temperature: 90°C Ambient Temperature: 30°C

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**Low Voltage Directive Attestation (EU)**

Type and routine tests are issued from our own testing centre under the ISO 9001 quality system — test reports and certificates accompany every shipment.

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Both drum ends sealed and protected for sea freight

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