The CU/XLPE/Welded Corrugated Aluminium/PVC single-core power cable 38/66kV manufactured by Zhongdong Cable is designed in accordance with IEC 60840 and IEC 60228 (Class 1 or Class 2 copper conductor). It adopts a copper conductor, XLPE insulation, welded corrugated aluminium sheath, and PVC outer sheath, providing reliable performance for high-voltage underground transmission systems.
The welded corrugated aluminium sheath provides both metallic screening and radial water blocking protection, improving cable reliability in underground environments. This structure also offers a lighter and more flexible alternative to traditional armoured HV cables.
|
Type |
High Voltage Single Core Power Cable |
Voltage Rating |
38/66 kV |
|
Cores |
Single Core |
Conductor |
Copper, Class 1 / Class 2 (IEC 60228) |
|
Insulation |
XLPE (Cross-linked Polyethylene) |
Metallic Sheath |
Welded Corrugated Aluminium Sheath |
|
Outer Sheath |
PVC |
Standards |
IEC 60840 / IEC 60228 |
|
Cross Reference |
YJLW02/N2X(Al) Equivalent |
Design |
Unarmoured single-core HV cable with corrugated aluminium sheath |
Conductor:Compact stranded copper conductor, Class 2 according to IEC 60228
Conductor Screen:Extruded semi-conductive layer for smooth electric field distribution
Insulation:XLPE insulation with high dielectric strength and excellent thermal stability
Insulation Screen:Extruded semi-conductive layer for insulation protection
Metallic Sheath:Welded corrugated aluminium sheath providing:
Radial moisture barrier
Fault current return path
Mechanical protection
Outer Sheath:
PVC protective sheath resistant to moisture, abrasion, and environmental conditions
Design:
Single-core high-voltage cable suitable for underground transmission systems
The CU/XLPE/Welded Corrugated Aluminium/PVC 38/66kV cable is mainly used in high-voltage underground networks where reliable insulation performance and moisture protection are required.
Typical applications:
Underground HV transmission networks
Utility grid expansion projects
Power plant outgoing feeders
Substation interconnection systems
Industrial high-voltage power supply
Urban power infrastructure
Renewable energy transmission projects
IEC: IEC 60840,IEC 60228,IEC 60229,IEC 60332,IEC 60811 Series
EN 60840
DIN EN 60840
AS/NZS 60840
ICEA S-108-720 (Reference)
|
Spec |
Conductor |
Conductor Diameter |
Outer Diameter of Insulation |
Outer Diameter of Cable |
Approx. Weight of Cablekg/m |
||||
|
Graphite |
Extruded |
||||||||
|
Graphite |
Extruded |
Non-FR |
FR |
Non-FR |
FR |
||||
|
95 |
19/2.58 |
11.6±0.2 |
43.5 |
68.2 |
69.2 |
4.86 |
4.90 |
4.99 |
5.04 |
|
120 |
19/2.91 |
13.0±02 |
43.9 |
68.6 |
69.6 |
5.09 |
5.13 |
5.23 |
5.27 |
|
150 |
37/2.31 |
14.4±0.2 |
45.3 |
70.0 |
71.0 |
5.47 |
5.51 |
5.61 |
5.65 |
|
185 |
37/2.58 |
16.1±0.2 |
47.0 |
72.7 |
73.7 |
5.96 |
6.00 |
6.10 |
6.15 |
|
240 |
37/2.96 |
18.4±0.2 |
48.3 |
74.0 |
75.0 |
6.55 |
6.60 |
6.70 |
6.75 |
|
300 |
61/2.58 |
20.6±0.2 |
50.5 |
76.2 |
77.2 |
7.31 |
7.36 |
7.46 |
7.51 |
|
400 |
61/2.91 |
23.4±0.2 |
53.3 |
79.0 |
80.0 |
8.29 |
8.34 |
8.45 |
8.50 |
|
500 |
61/3.30 |
266±0.2 |
55.5 |
81.2 |
82.2 |
9.44 |
9.49 |
9.60 |
9.66 |
|
630 |
60/3.76 |
30.0±0.2 |
58.9 |
84.6 |
85.6 |
10.97 |
11.02 |
11.14 |
11.19 |
|
800 |
61/4.28 or 88/3.52 |
34.0±0.2 |
62.9 |
88.6 |
89.6 |
12.88 |
12.94 |
13.06 |
13.12 |
|
800 |
5×37/2.50 |
34.6±0.6 |
65.8 |
91.5 |
92.5 |
13.34 |
13.40 |
13.53 |
13.59 |
|
1000 |
5×37/2.80 |
388±0.6 |
69.8 |
98.1 |
99.1 |
16.06 |
16.13 |
16.26 |
16.33 |
|
1200 |
5×61/2.36 |
41.8±0.6 |
72.8 |
101.1 |
102.1 |
17.91 |
17.98 |
18.11 |
18.19 |
|
1400 |
5×61/2.56 |
45.6±06 |
76.6 |
104.9 |
105.9 |
20.06 |
20.13 |
20.27 |
20.35 |
|
1600 |
5×61/2.72 |
48.6±0.6 |
79.6 |
107.9 |
108.9 |
22.10 |
22.18 |
22.31 |
22.40 |
The welded corrugated aluminium sheath provides a reliable moisture barrier and metallic shielding path, helping protect the cable insulation system during long-term underground operation.
Single-core cables are commonly used for high-voltage transmission because they provide better installation flexibility and are suitable for large conductor sizes required for high power capacity.
Yes. The welded corrugated aluminium sheath provides radial water resistance, making it suitable for underground routes where moisture protection is required.
The recommended minimum bending radius is generally 20 × overall cable diameter during installation. Proper pulling tension and bending control should be maintained for large conductor sizes.
The XLPE insulation allows continuous conductor operation up to 90°C, with a maximum short-circuit temperature of 250°C for 5 seconds.
Due to the high voltage level and large cable size, installation should consider cable pulling tension, bending radius, jointing requirements, and suitable earthing arrangements to ensure long-term reliability.
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