64/110(123)kV CU/XLPE /CAS/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]	520	587	667	758	860	961	1109	1187	1338	1458	1538
Buried in duct		[A]	491	550	639	725	821	915	1057	1180	1332	1447	1526
In free air	Trefoil formation	[A]	592	677	775	889	1020	1147	1346	1451	1635	1787	1885
In free air	Flat formation	[A]	657	755	873	1006	1169	1333	1581	1717	1995	2236	2358

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 aluminum 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	1.7	3.5	76	6.3	0.0754	0.17
300	CC	20.4	1.2	14.0	1.0	1.8	3.5	78	7.0	0.0601	0.18
400	CC	23.2	1.2	14.0	1.0	1.8	3.5	81	8.0	0.0470	0.20
500	CC	26.3	1.2	14.0	1.0	1.9	4.0	86	9.3	0.0366	0.21
630	CC	30.2	1.2	14.0	1.0	2.0	4.0	90	11.0	0.0283	0.23
800	CC	34.0	1.2	14.0	1.0	2.0	4.0	94	12.9	0.0221	0.25
1000	4S	38.7	1.2	14.0	1.0	2.1	4.0	99	15.4	0.0176	0.28
1200	4S	41.8	1.2	14.0	1.0	2.2	4.5	104	17.7	0.0151	0.30
1600	4S	48.3	1.2	14.0	1.0	2.4	4.5	111	22.1	0.0113	0.33
2000	5S	54.3	1.2	14.0	1.0	2.5	4.5	118	26.5	0.0090	0.36
2500	5S	62.0	1.2	14.0	1.0	2.6	4.5	128	33.0	0.0072	0.40