12/20kV 3 Core 120mm² SWA Fire Resistant Medium Voltage Cable

12/20kV 3 Core 120mm² SWA Fire Resistant Medium Voltage Cable

Product Overview

The 12/20kV medium voltage cable with 3 × 120mm² conductors is designed for medium voltage power distribution in industrial facilities, utility networks and infrastructure projects.

With XLPE insulation and steel wire armouring (SWA), this cable construction provides electrical insulation and mechanical protection for fixed power installations. The three-core design is suitable for three-phase power distribution, subject to the project's electrical requirements.

For applications requiring fire-resistant performance, the cable must be manufactured with a suitable design and verified against the specified fire test standard. The required fire performance should be confirmed before selecting the final cable construction.

Zhongdong Cable Co., Ltd. supplies power cables for industrial and infrastructure projects, with technical specifications tailored to project requirements.

Cable Construction

• Conductor: Stranded copper or aluminium, according to project specifications

• Conductor Screen: Extruded semiconductive layer

• Insulation: XLPE (cross-linked polyethylene)

• Insulation Screen: Extruded semiconductive layer

• Metallic Screen: Copper tape or copper wire, as specified

• Inner Sheath: PVC or other specified material

• Armour: Galvanized steel wire armour (SWA)

• Outer Sheath: PVC or PE, according to installation requirements

• Fire Performance: Subject to the specified fire-resistant design and applicable test requirements

The final cable structure depends on the approved technical specification. Fire-resistant layers and special materials must be selected according to the required performance standard.

Technical Specifications

Applications of 12/20kV SWA Medium Voltage Cable

This 3-core 120mm² medium voltage cable can be considered for power distribution in:

• Industrial plants: Power supply for manufacturing facilities, processing equipment and industrial distribution networks.

• Utility networks: Medium voltage distribution systems connecting substations, transformers and other electrical equipment.

• Commercial developments: Power distribution for large commercial and industrial buildings.

• Infrastructure projects: Electrical networks for public infrastructure and utility installations.

• Underground installations: Suitable for underground cable routes when the cable construction and installation method meet the project requirements.

For installations requiring continued electrical circuit operation during a fire, the required fire-resistance standard and test duration should be stated in the project specification.

Key Features

XLPE Insulation:XLPE insulation is widely used in medium voltage cables because of its electrical properties, thermal performance and suitability for power distribution applications.

Steel Wire Armour:SWA provides mechanical protection against external forces during cable installation and service. It is commonly specified for armoured power cables where additional mechanical protection is required.

Three-Core Design:The three-core configuration combines the three phase conductors within one cable, providing a practical option for three-phase medium voltage distribution.

Project-Specific Cable Design:Conductor material, metallic screen, sheath material and fire-performance requirements can be specified according to the project's technical documents. This allows buyers to compare cable offers against their actual electrical and installation requirements.

Fire-Resistant Medium Voltage Cable Requirements

Fire resistance and flame retardancy are different cable performance characteristics.

Fire resistance relates to a cable's ability to maintain its required function under specified fire-test conditions. Flame retardancy relates to limiting flame propagation under a defined test method. Neither property should be assumed solely from the use of XLPE insulation or steel wire armour.

IEC 60502-2 covers extruded-insulation power cables for rated voltages from 6kV up to 30kV, including 12/20kV cables. Any additional fire-resistance requirement must be evaluated separately against the relevant test standard.

Before ordering, buyers should specify the required fire test, duration, circuit-integrity criteria and any additional flame, smoke or halogen requirements.

Quality Control and Manufacturing

Zhongdong Cable Co., Ltd. manufactures power cables for utility, industrial and infrastructure applications. Our product range includes low voltage, medium voltage and high voltage power cables, control cables, solar cables and other cable products.

For medium voltage cable projects, technical review can cover conductor resistance, insulation dimensions, metallic screen construction, sheath requirements and applicable electrical tests.

Product standards, inspection requirements and documentation can be agreed during the technical review to ensure that the proposed cable matches the project's specification.

Request a Quotation for 12/20kV MV Cable

Looking for a 12/20kV 3 × 120mm² XLPE insulated SWA armoured cable for your next power distribution project?

Send Zhongdong Cable your inquiry or bill of quantities for a project-specific quotation.

To help us prepare an accurate offer, please provide:

• Conductor material: copper or aluminium

• Required cable length

• Applicable technical standard

• Metallic screen specification

• Outer sheath material

• Required fire-resistance standard and test duration

• Delivery destination and preferred packing method