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The AL/XLPE/CTS/STA/PVC three-core power cable 12/20kV manufactured by Zhongdong Cable is designed in accordance with IEC 60502-2 and IEC 60228 (Class 1 or Class 2 aluminium conductor). It uses aluminium conductors, XLPE insulation, copper tape screening (CTS), steel tape armour (STA), and a PVC outer sheath, providing a cost-efficient and mechanically protected solution for medium-voltage distribution networks.
The STA structure enhances resistance to external mechanical stress and soil pressure, making the cable suitable for direct burial and underground installations where protection requirements are higher than standard unarmoured designs.
|
Type |
Steel Tape Armoured Medium Voltage Power Cable |
Voltage Rating |
12/20 kV |
|
Cores |
3 Core |
Conductor |
Aluminium, Class 1 / Class 2 (IEC 60228) |
|
Insulation |
XLPE (Cross-linked Polyethylene) |
Screen |
Copper Tape Screen (CTS) |
|
Armour |
Steel Tape Armour (STA) |
Sheath |
PVC ST2 |
|
Standards |
IEC 60502-2 / IEC 60228 |
Cross Reference |
YJLV22 / NA2XSEBY Equivalent |
Conductor: Stranded aluminium conductor (Class 1 or Class 2)
Conductor Screen: Semi-conductive layer for electric field control
Insulation: XLPE with high thermal endurance and dielectric strength
Insulation Screen: Semi-conductive layer for uniform stress distribution
Metallic Screen: Copper tape screen (CTS) for grounding and fault current path
Armour: Steel tape armour (STA) for mechanical protection and compression resistance
Bedding: Protective layer between core and armour system
Outer Sheath: PVC (ST2), moisture and abrasion resistant
Design: Three-core, steel tape armoured medium voltage cable (12/20 kV)
The 12/20kV AL XLPE STA cable is used in medium-voltage systems where both electrical performance and mechanical protection are required. Compared with unarmoured aluminium cables, it performs better in underground and direct burial conditions.
Typical applications include:
Urban underground medium-voltage distribution networks
Primary and secondary substations feeder circuits
Industrial plants with moderate mechanical risk exposure
Road, railway, and utility crossing installations
Underground cable duct and trench systems
Renewable energy collection and distribution networks
Infrastructure and public utility projects
IEC: IEC 60502-2 / IEC 60228 / IEC 60332-1 / IEC 60332-3 / IEC 60754-1 / IEC 60754-2 / IEC 61034
DIN VDE: DIN VDE 0276-620
BS: BS 6622 / BS 7835
NF: NF C 33-220
AS/NZS: AS/NZS 1429.1
ASTM: ASTM B3 / ASTM B8
|
No.of Cores and Nominal Cross Section (mm²) |
Nominal Insulation Thickness (mm) |
Nominal Steel Wire Diameter (mm) |
Nominal Sheath Thickness (mm) |
Approx. Overal Diameter (mm) |
Approx. Weight (kg/km) |
Max. DC Resistance of Conductor at 20℃ (Ω/km) |
|
3×35 |
5.5 |
0.5 |
2.8 |
61.3 |
3991 |
0.868 |
|
3×50 |
5.5 |
0.5 |
2.9 |
64.1 |
4338 |
0.641 |
|
3×70 |
5.5 |
0.5 |
3 |
68.2 |
4861 |
0.443 |
|
3×95 |
5.5 |
0.5 |
3.2 |
72.4 |
5452 |
0.32 |
|
3×120 |
5.5 |
0.5 |
3.3 |
75.4 |
5967 |
0.253 |
|
3×150 |
5.5 |
0.5 |
3.4 |
79.1 |
6799 |
0.206 |
|
3×185 |
5.5 |
0.5 |
3.5 |
83 |
7439 |
0.164 |
|
3×240 |
5.5 |
0.8 |
3.7 |
89.7 |
9303 |
0.125 |
|
3×300 |
5.5 |
0.8 |
3.9 |
95.1 |
10517 |
0.1 |
|
3×400 |
5.5 |
0.8 |
4.1 |
101.5 |
12230 |
0.078 |
|
3×500 |
5.5 |
0.8 |
4.3 |
109.8 |
14204 |
0.0605 |
|
3×630 |
5.5 |
0.8 |
4.6 |
118.6 |
16307 |
0.0469 |
STA provides mechanical protection against external pressure, impact, and soil stress, making the cable suitable for direct burial underground installation.
Yes. The aluminium conductor reduces weight and cost, making it suitable for long feeder routes and large infrastructure projects.
The recommended minimum bending radius is 15 × overall cable diameter during installation and 12 × diameter for fixed installation, to protect insulation and maintain long-term performance.
Installation should be done above 0°C, avoiding sharp bends and excessive pulling force. Proper trench preparation and sand bedding are recommended for direct burial.
It is widely used in underground MV distribution networks, substations, industrial plants, and infrastructure projects requiring mechanical protection.
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Fumigated Wooden Drums: Fully heat-treated and officially stamped in strict compliance with ISPM 15 international phytosanitary regulations. This guarantees seamless, delay-free customs clearance at any global port.
Steel-Wooden Hybrid Drums (Iron-Wooden Axle): Engineered with reinforced steel structural frames and durable wood flanging. This hybrid design prevents drum collapse under heavy loads and provides ultimate mechanical protection during rough ocean freight handling.
100% Customized Packaging: We cooperate closely with project engineers to provide tailored packing options—including custom cable lengths per drum, protective lagging, water-proof plastic wrapping, or specific color coding—tailored to your exact on-site installation layout.
CU/XLPE/CTS/STA/PVC Three Core Power Cable 12/20kV
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Zhongdong Cable combines premium raw materials, large-scale manufacturing capabilities, and strict quality control systems to deliver cable products that fully match your technical requirements and brand identity.
