12/20kV 3x120mm2 Three Core XLPE Insulated SWA Medium Voltage Power Cable IEC

Product Specification

12/20kV 3x120mm2 Three Core XLPE Insulated SWA Medium Voltage Power Cable

The 12/20kV 3x120mm2 SWA cable is a high-performance Medium Voltage (MV) armoured power cable designed for primary electrical power distribution. Featuring a robust Three-Core Copper (CU) conductor, high-grade XLPE (Cross-linked Polyethylene) insulation and SWA (Steel Wire Armour) protection, this cable ensures maximum electrical efficiency and mechanical durability.

It is engineered for installation in power supply stations, indoor and outdoor ducts, open air and underground networks where mechanical protection is vital.

Product Specification Matrix

Key Features and Engineering Benefits

• Superior Mechanical Protection: The Steel Wire Armour (SWA) provides exceptional tensile strength, making the cable ideal for direct burial, cable trenching and high mechanical stress environments.
• Excellent Thermal Performance: XLPE insulation allows the conductor to operate at a maximum continuous temperature of 90°C and a short-circuit temperature of 250°C (up to 5 seconds).
• High Electrical Reliability: Individual copper tape screening per core provides robust electromagnetic interference (EMI) protection and ensures reliable earth fault current capacity.
• Corrosion and Moisture Resistance: The heavy-duty PVC outer sheath resists chemical exposure, moisture and ultraviolet (UV) radiation.

Key Applications

Our 12/20kV 3 core x 120mm2 armoured cable is widely trusted across global industrial and infrastructure projects:

• Power Grids: Main distribution networks in substations and power plants.
• Industrial Facilities: Heavy industries, chemical plants and refineries requiring rugged MV cabling.
• Mining and Infrastructure: Underground mining applications and railway power distribution.
• Renewable Energy: Connecting wind farms and solar power fields to the main power grid.

Global Compliance and Certifications

• IEC 60502-2 (International Standard)
• CE Marking (European Compliance)
• KEMA / BASEC Certification (Available upon request)
• RoHS and ISO 9001:2015 certified production lines

Packaging and Shipping Options

B2B buyers need secure logistics to prevent cable damage:

• Drums: Treated wooden drums, steel-wooden drums or full-steel drums.
• Length per drum: 500m, 1000m or customized according to project blueprints.
• Protection: Sealed cable ends with watertight caps to prevent moisture ingress during shipping.

FAQ

Q1: What is the current carrying capacity of a 12/20kV 3x120mm2 SWA cable?
A: The current rating depends on the installation environment. For a 12/20kV 3x120mm2 copper XLPE SWA cable, the typical continuous current carrying capacity is approximately 310A to 330A when laid directly in the ground (at 20°C soil temperature) and 350A to 380A when installed in free air (at 30°C ambient temperature). Contact our engineering team for the official technical data sheet.

Q2: What international standards does your cable comply with?
A: Our medium voltage armoured cables are manufactured and tested in strict accordance with IEC 60502-2 (for voltages from 6 kV up to 30 kV). Depending on your target market, we can also customize production to meet BS 6622 (UK standard), AS/NZS 1429.1 (Australia and New Zealand) or specific national utility specifications.

Q3: Why is Steel Wire Armour (SWA) used for this 3-core medium voltage cable?
A: SWA provides superior mechanical protection against high crushing forces and tensile stress, making the 3-core cable ideal for direct burial underground or deployment in heavy-duty industrial zones. Additionally, the steel wire layers function as an effective earth path during fault conditions.

Q4: Can you provide Type Test Reports for third-party inspection?
A: Yes. We provide complete quality documentation for B-end clients and EPC projects, including Routine Tests, Sample Tests and independent Type Test Reports (covering electrical, mechanical and thermal properties) from accredited third-party laboratories. Full traceability documentation and ISO 9001 certificates are provided before shipment.

Q5: What is the MOQ and production lead time?
A: Our standard MOQ for 12/20kV 3x120mm2 SWA cable is 200 to 500 meters due to factory machinery calibration. Smaller quantities are supported for initial project trials or stock replenishment. Typical lead time is 15 to 25 days depending on order volume and production schedule.

Q6: Do you support customized outer sheaths like LSZH or Anti-Termite?
A: Yes. Standard cables come with a heavy-duty PVC jacket, and we offer tailored options based on project environments: LSZH (Low Smoke Zero Halogen) for indoor or poorly ventilated public spaces to prevent toxic gas release during fire; Anti-Termite and Anti-Rodent chemically treated or double-jacketed options for tropical or underground environments prone to pest attacks.

Contact us for detailed specifications, type test reports and factory pricing.