64/110(123)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.Lead 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	594	678	772	880	990	1147	1236	1408	1546	1682
Buried in duct		[A]	482	545	621	711	813	914	1063	1145	1309	1441	1577
In free air	Trefoil formation	[A]	597	682	788	907	1045	1184	1407	1524	1752	1931	2112
In free air	Flat formation	[A]	668	766	889	1029	1198	1373	1627	1771	2074	2330	2614

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	1.2	14.0	1.0	1.6	3.5	68	8.2	0.0754	0.17
300	CC	20.4	1.2	14.0	1.0	1.6	3.5	70	9.0	0.0601	0.18
400	CC	23.2	1.2	14.0	1.0	1.6	3.5	73	10.1	0.0470	0.20
500	CC	26.3	1.2	14.0	1.0	1.6	4.0	77	11.6	0.0366	0.21
630	CC	30.2	1.2	14.0	1.0	1.7	4.0	81	13.6	0.0283	0.23
800	CC	34.0	1.2	14.0	1.0	1.8	4.0	85	15.9	0.0221	0.25
1000	4S	38.7	1.2	14.0	1.0	1.8	4.0	89	18.6	0.0176	0.28
1200	4S	41.8	1.2	14.0	1.0	1.8	4.5	93	20.6	0.0151	0.30
1600	4S	48.3	1.2	14.0	1.0	1.9	4.5	100	25.4	0.0113	0.33
2000	5S	54.3	1.2	14.0	1.0	2.0	4.5	106	30.2	0.0090	0.36
2500	5S	62.0	1.2	14.0	1.0	2.2	4.5	115	37.1	0.0072	0.40