76/132(145)kV CU/XLPE /CWS/LAT/PE (or PVC,LSHF) 240 ~ 2500 MM2

The basic material for XLPE is polyethylene, which is chemically transformed to cross-linked polyethylene (XLPE) through the cross-link reaction of organic peroxides. The cross-link method for polyethylene was developed in the United States during the 1950’s and has since been continuously developed for application to higher voltages. Higher voltages are increasingly being required, and the 500kV XLPE cables have already been commercialized

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Design & Construction

1.Conductor

2.Conductor screen

3.XLPE insulation

4.Insulation screen

5.Semiconducting tape

6.Aluminum corrugated sheath

7.PE or PVC outer sheath (Graphite coating or extruded semiconducting)

Application

Used for underground power transmission lines; laid on cable ladder, tray, buried direct in the ground or in duct in the ground

CURRENT RATING, SINGLE CIRCUIT

Nominal area		[mm²]	240	300	400	500	630	800	1000	1200	1600	2000	2500
Direct buried in ground		[A]	525	583	675	767	872	979	1145	1233	1414	1569	1653
Buried in duct		[A]	492	555	632	716	811	932	1087	1212	1388	1532	1614
In free air	Trefoil formation	[A]	601	688	792	908	1045	1182	1420	1539	1784	2003	2111
In free air	Flat formation	[A]	673	774	896	1033	1200	1374	1649	1801	2125	2418	2548

TECHNICAL DATA

Nominal cross- sectional area	Shape of conductor	Nominal Diameter of conductor	Nominal Thickness of conductor screen	Nominal Thickness of Insulation	Nominal Thickness of Insulation screen	Diameter and number of copper wire	Nominal Thickness of Outer sheath	Approx. Overall diameter of cable	Approx. Weight of cable	Maximum DC resistance at 20 C	Capacitance
mm²		mm	mm	mm	mm	mm	mm	mm	kg/m	Ω/km	µF/km
240	CC	18.1	1.5	16.0	1.3	1.5 x 80	4.5	70	6.5	0.0754	0.16
300	CC	20.4	1.5	16.0	1.3	1.5 x 80	4.5	72	7.1	0.0601	0.17
400	CC	23.2	1.5	16.0	1.3	1.5 x 80	4.5	75	8.1	0.0470	0.18
500	CC	26.3	1.5	16.0	1.3	1.5 x 80	4.5	80	9.5	0.0366	0.20
630	CC	30.2	1.5	16.0	1.3	1.5 x 80	4.5	84	11.0	0.0283	0.21
800	CC	34.0	1.5	16.0	1.3	1.5 x 80	4.5	88	12.9	0.0221	0.23
1000	4S	38.7	1.5	16.0	1.3	1.5 x 80	4.5	93	15.3	0.0176	0.25
1200	4S	41.8	1.5	16.0	1.3	1.5 x 80	4.5	96	17.1	0.0151	0.27
1600	4S	48.3	1.5	16.0	1.3	1.5 x 80	4.5	102	21.2	0.0113	0.30
2000	5S	54.3	1.5	16.0	1.3	1.5 x 80	4.5	110	25.8	0.0090	0.32
2500	5S	62.0	1.5	16.0	1.3	1.5 x 80	4.5	118	31.4	0.0072	0.36