18kV SWA Armoured Aluminium Alloy Conductor Copper Tape Screened Cable for Underground Power Distribution

18kV SWA Armoured Aluminium Alloy Conductor Copper Tape Screened Cable for Underground Power Distribution

Application

The 18kV SWA Armoured Aluminium Alloy Conductor Copper Tape Screened Cable is primarily used for medium voltage underground power distribution systems. It is designed to deliver reliable electrical power in demanding environments where mechanical protection and electrical shielding are required.

This cable is widely applied in:

• Urban power distribution networks for underground installation
• Industrial plants and manufacturing facilities requiring stable medium voltage supply
• Power stations and substations for feeder and distribution lines
• Infrastructure projects such as airports, railways, and commercial buildings
• Utility networks where enhanced protection against mechanical damage and electromagnetic interference is essential

Thanks to its steel wire armouring (SWA), the cable provides excellent mechanical strength, making it suitable for direct burial in soil without additional protection. The copper tape screening ensures effective control of electric fields and reduces electromagnetic interference (EMI), enhancing system safety and performance.

Construction

The 18kV SWA Armoured Aluminium Alloy Conductor Copper Tape Screened Cable is manufactured with a robust multi-layer structure to ensure reliable performance in medium voltage underground power distribution systems.

1. Conductor
Aluminium alloy conductor (AAAC), compacted stranded, providing high conductivity, lightweight performance, and improved mechanical strength compared to pure aluminium.

2. Conductor Screen
Semi-conductive layer extruded over the conductor to ensure a smooth electric field and reduce electrical stress.

3. Insulation
Cross-linked polyethylene (XLPE) insulation, offering excellent thermal resistance, high dielectric strength, and long service life, suitable for 18kV medium voltage applications.

4. Insulation Screen
Extruded semi-conductive layer applied over the insulation to maintain uniform electric stress distribution.

5. Metallic Screen
Copper tape screen helically applied to provide effective fault current path and electromagnetic shielding (EMI protection).

6. Bedding (Inner Sheath)
PVC or PE inner sheath to protect the screened core and provide a stable bedding layer for armouring.

7. Armouring
Steel wire armouring (SWA) to provide strong mechanical protection, making the cable suitable for direct burial and heavy-duty installations.

8. Outer Sheath
PVC, PE, or LSZH outer sheath, offering protection against moisture, chemicals, abrasion, and environmental conditions.

Standards

IEC60502-2

Installation Method

This cable is highly versatile and can be installed in direct burial, ducts, trays, tunnels, or vertical systems, making it ideal for underground power distribution, industrial applications, and infrastructure projects.

Specification

Spec mm²	Conductor Dia mm	Insulated Diameter with Screen ±1.0mm	Approx. Cable Diameter      mm	Approx. Cable Weight          kg/km
3×50	7.6±0.2	25.6	72.2	7858
3×70	9.2±0.2	27.2	75.8	8501
3×95	10.9±0.2	28.9	80.0	9258
3×120	12.2±0.2	30.2	83.1	9953
3×150	13.6±0.2	31.6	86.3	10596
3×185	15.2±0.2	33.2	90.1	11523
3×240	17.4±0.2	35.4	95.4	12812
3×300	19.5±0.2	37.5	100.3	14022
3×400	22.0±0.2	40.0	106.3	16112
3×500	24.8±0.2	43.6	116.3	19845
3×630	28.2±0.2	47.0	124.4	22347

FAQ

1. Do your cables meet international standards?

Yes, our cables comply with IEC, BS, DIN, and other global standards.

2. Are your cables suitable for underground use?

Yes, armored cables are ideal for direct burial and duct installation.

3. Do you offer customized cables?

Yes, we support custom sizes, materials, and voltage ratings.

4. What certifications do you have?

We provide ISO, CE, and IEC test reports.

5. How do you ensure quality?

All cables undergo strict testing before delivery.

6. What is your delivery time?

Typically 7–30 days depending on order quantity.