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Concentric Cables

BS Standard Concentric Cables

BS 7870 Copper Split Concentric Neutral Wire PVC Sheath

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Product Details

Product parameter

What is split concentric cable used for?

PVC concentric electric cable is Used by distribution network operators (DNO’s) 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.

Performance

Electrical performance U0/U:
0.6/1kV

Mechanical performance:
minimum bending radius:8 x overall diameter

Terminal performance:
-Maximum service temperature:70℃
-Minimum service temperature：-15℃

Fire performance:
- Flame Retardant according to IEC/EN 60332-1-2 Standard

Construction

Conductor:
Class 2 stranded copper conductor

Insulation:
XLPE (Cross-linked polyethylene)

Neutral Conductor:
Plain copper wires covered by a blue polymeric compound

Earth Continuity Conductor:
Plain copper wires

String Separator:
Non-hydroscopic separator

Sheath:
PVC (Polyvinyl Chloride)

Sheath Colour:
black

Cable Marking and Packing Materials

Cable Marking:
printing, embossing, engraving

Packing Materials:
wooden drum, steel drum, steel-wooden drum

Specifications

-BS 7870-3-21, EN 60228 Standard

Physical Performance Parameters

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	NOMINAL OVERALL DIAMETER	MAXIMUM RESISTANCE OF CONDUCTOR AT 20°C
NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	NOMINAL OVERALL DIAMETER	Plain Wires	Metal-Coated Wires
-	mm²	mm	ohms/km	ohms/km
1	4	10	4.8	4.8
1	16	14	1.2	1.2
1	25	16	0.76	1.2
3	35	28.5	0.55	0.76

Electrical Performance Parameters

NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	CONCENTRIC CABLE CURRENT CARRYING CAPACITY
NO. OF CORES	NOMINAL CROSS SECTIONAL AREA	In Air	Clipped Direct	Enclosed in Conduit on a Wall
-	mm²	Amps	Amps	Amps
1	4	42	41	37
1	16	100	99	88
1	25	129	120	110
1	35	135	130	117