36/66(72.5)kV CU/XLPE /SAS/PE (or PVC,LSHF) 240 ~ 2000 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.Smooth aluminum 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
Direct buried in ground		[A]	535	590	672	763	866	969	1113	1193	1343	1458
Buried in duct		[A]	477	541	615	702	796	894	1026	1104	1247	1358
In free air	Trefoil formation	[A]	588	669	767	877	999	1117	1299	1391	1557	1679
In free air	Flat formation	[A]	667	766	887	1025	1189	1358	1601	1738	2017	2249

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	1.0	11.0	1.0	1.3	3.5	62	5.0	0.0754	0.20
300	CC	20.4	1.0	11.0	1.0	1.3	3.5	64	5.7	0.0601	0.22
400	CC	23.2	1.0	11.0	1.0	1.3	3.5	67	6.6	0.0470	0.23
500	CC	26.3	1.0	11.0	1.0	1.3	4.0	71	8.0	0.0366	0.25
630	CC	30.2	1.0	11.0	1.0	1.3	4.0	75	9.5	0.0283	0.28
800	CC	34.0	1.0	11.0	1.0	1.3	4.0	79	11.4	0.0221	0.30
1000	4S	38.7	1.0	11.0	1.0	1.3	4.0	83	13.6	0.0176	0.33
1200	4S	41.8	1.0	11.0	1.0	1.3	4.5	87	15.5	0.0151	0.35
1600	4S	48.3	1.0	11.0	1.0	1.3	4.5	94	19.6	0.0113	0.39
2000	5S	54.3	1.0	11.0	1.0	1.3	4.5	100	23.7	0.0090	0.43