Medium voltage SWA armoured cable combines a medium-voltage power cable construction with steel wire armour (SWA) to provide mechanical protection where a project’s installation conditions call for it. To select a suitable cable, confirm the system voltage, conductor size and material, insulation, armour arrangement, sheath requirements, installation method, and applicable project standards. SWA is not automatically the right armour for every design: for example, single-core AC cables may require non-magnetic armour to manage magnetic effects. This guide explains the main specifications and the information we recommend preparing before requesting a quotation.
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This guide is for procurement teams, electrical contractors, consultants, and project engineers sourcing medium voltage power cable for commercial or industrial projects. It is useful when preparing a technical inquiry, comparing supplier quotations, or checking whether a proposed cable construction fits the planned installation. Final selection should be confirmed against the project design, applicable electrical regulations, and the requirements of the installation authority.
Medium voltage SWA cable is a power cable designed for medium-voltage distribution, with steel wire armour around the cable assembly beneath its outer sheath. A typical construction may include a copper or aluminium conductor, conductor screen, insulation, insulation screen, metallic screen, inner covering or bedding, steel wire armour, and outer sheath. The exact layers and their materials depend on the cable design, voltage rating, number of cores, and governing specification.
The steel wires provide mechanical protection and can contribute to the cable’s suitability for installations exposed to handling or external impact risks. Armour does not, by itself, define whether a cable is suitable for direct burial, wet locations, corrosive environments, or a particular fault-current duty. Those decisions depend on the complete cable design, installation details, and project requirements. Confirm any required earth-fault performance and earthing arrangement with the responsible electrical designer.
IEC 60502-2 addresses extruded-insulation power cables for rated voltages from 6 kV up to 30 kV, with maximum system voltages (Um) up to 36 kV. Common cable designations within this range include 6/10 kV, 8.7/15 kV, and 12/20 kV, but the correct rating depends on the system and its earthing conditions. Always check both values in the voltage designation and confirm the required standard edition or national equivalent in the project specification.
Medium-voltage armoured cable may be considered for industrial distribution, utility-related infrastructure, commercial facilities, and other fixed power installations. The appropriate construction varies by route: a cable installed in a protected duct may face different mechanical and environmental demands from one installed on a cable support system or in a buried route. The project designer should determine installation method, pulling conditions, bonding, and any additional protection required.
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For each route, document whether the cable will be installed in ducts, trenches, on trays, or by another method, and identify expected exposure to water, sunlight, chemicals, and physical damage. Confirm the permitted bending radius and pulling tension from the cable manufacturer’s data before installation; these values vary by cable construction and size. Also establish whether fire-performance, low-smoke, or other special sheath requirements apply. Do not assume a standard SWA specification includes those properties.
A frequent issue is requesting “MV SWA cable” without specifying voltage rating, core count, conductor size, or applicable standard. Another is treating armour as a substitute for a defined earthing or fault-current design. Buyers can also overlook single-core armour considerations, sheath environment, or the accessories needed for terminations and joints. Resolve these points before order placement to reduce the chance of receiving a technically different offer from the one intended.
There is no reliable universal price or lead time for medium-voltage SWA cable without a defined specification and order quantity. Pricing can vary with conductor material and size, voltage class, number of cores, armour and sheath construction, order length, packaging, and destination. Minimum order quantities and production schedules are supplier- and specification-dependent, so request written confirmation for the exact item and required delivery window.
For a useful quotation, provide a cable schedule or datasheet, estimated quantity, delivery location, required delivery date, and any inspection or documentation requirements. Ask whether the quotation includes accessories, testing documents, packing, and freight, and request a clear list of exclusions. Where the specification allows alternatives, ask the supplier to identify them separately rather than silently substituting construction details.
At Zhongdong Cable Co., Ltd., we support B2B buyers by reviewing the requested cable construction and clarifying the details needed for a quotation. Send us your voltage rating, conductor and core requirements, applicable standard, installation conditions, quantity, and destination so we can assess the request against the product specification. We can also discuss available construction options and identify information that should be confirmed by your project engineer before ordering. Product availability, customization, and delivery timing should be verified for each inquiry.
The right medium voltage SWA armoured cable is the construction that meets the project’s electrical design, installation conditions, and documented compliance requirements—not simply a cable described as “armoured.” Confirm voltage rating, conductor, insulation, screens, armour suitability, sheath, and installation details before comparing suppliers. As a next step, prepare a cable schedule and send it with the required quantity and delivery information to potential suppliers. Contact Zhongdong Cable Co., Ltd. with these details to discuss a project-specific quotation and technical review.
Contact us to discuss your requirements of Medium Voltage SWA Armoured Cable. Our experienced sales team can help you identify the options that best suit your needs.