76/132(145)kV CU/XLPE /LEAD/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]	523	592	676	770	878	987	1143	1231	1403	1540	1674
Buried in duct		[A]	484	547	624	713	812	917	1065	1146	1309	1440	1570
In free air	Trefoil formation	[A]	595	680	785	903	1041	1179	1396	1513	1738	1915	2093
In free air	Flat formation	[A]	659	756	877	1017	1182	1354	1603	1749	2046	2297	2576

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	Nominal Thickness of lead sheath	Nominal Thickness of Outer sheath	Approx. Overall diameter of cable	Approx. Weight of cable	Maximum DC resistance at 20^oC	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	1.6	4.5	74	9.2	0.0754	0.16
300	CC	20.4	1.5	16.0	1.3	1.6	4.5	77	10.0	0.0601	0.17
400	CC	23.2	1.5	16.0	1.3	1.7	4.5	80	11.4	0.0470	0.18
500	CC	26.3	1.5	16.0	1.3	1.7	4.5	83	12.7	0.0366	0.20
630	CC	30.2	1.5	16.0	1.3	1.8	4.5	87	14.8	0.0283	0.21
800	CC	34.0	1.5	16.0	1.3	1.8	4.5	91	16.9	0.0221	0.23
1000	4S	38.7	1.5	16.0	1.3	1.9	4.5	95	20.0	0.0176	0.25
1200	4S	41.8	1.5	16.0	1.3	1.9	4.5	98	21.9	0.0151	0.27
1600	4S	48.3	1.5	16.0	1.3	2.0	4.5	105	26.7	0.0113	0.30
2000	5S	54.3	1.5	16.0	1.3	2.1	4.5	111	31.6	0.0090	0.32
2500	5S	62.0	1.5	16.0	1.3	2.3	4.5	120	38.7	0.0072	0.36