Medium Voltage Cable
THE medium voltage cables are intended for the transmission and distribution of electrical energy on fixed installations, for nominal voltages between 1 kV etc 35 kV, beyond low voltage. They are commonly used in distribution networks, industrial sites and electrical infrastructures.
As a specialist manufacturer, ZMS CABLE produces a wide range of medium voltage cables with copper or aluminum conductor, available with different types of insulation and sheaths, notably XLPE, PVC, PE, EPR and LSZH, as well as versions reinforced with steel or aluminum wire, providing enhanced mechanical protection for underground and industrial installations.
General structure of a medium voltage cable
| Element | Main function |
| Driver (Copper / Aluminium) | Transport of electric current |
| Internal semiconductor display | Standardization of the electric field around the conductor |
| Isolation (XLPE / EPR / HEPR) | Dielectric protection and voltage withstand |
| External semiconductor display | Electric field control and insulation protection |
| Metal screen (copper wires or tape) | Grounding and fault current evacuation |
| Binding tape (binder) | Mechanical maintenance of internal layers |
| Inner sheath (optional) | Separation between armor and metal screen |
| Metal armor (optional) | Mechanical protection against shocks and external constraints |
| Outer sheath (PVC / PE / LSZH) | Moisture protection, UV and chemical attacks |
Types of medium voltage cables available at ZMS Cable
Medium voltage cables according to structure
XLPE insulated medium voltage cables
THE XLPE insulated medium voltage cables are made of a copper or aluminum conductor. The insulation is made of cross-linked polyethylene. (XLPE). Depending on the installation conditions, a metal armor can be added to reinforce mechanical protection.
XLPE insulation helps withstand high operating temperatures. It also has very low dielectric loss. These characteristics are particularly suitable for networks subject to significant electrical loads.
ZMS CABLE expert advice :
XLPE insulated MV cables are recommended for medium voltage distribution networks and the power supply of industrial sites when the cable is subjected to high service currents or continuous operation.
They constitute a relevant choice in underground installations or environments where the thermal resistance of the insulation is a priority criterion..
PVC insulated medium voltage cables
THE PVC insulated medium voltage cables are made of a copper or aluminum conductor. The insulation is carried out polyvinyl chloride (PVC). Depending on the needs of the installation, a metal armor can be integrated to provide mechanical protection.
PVC insulation is characterized by a good electrical stability and simple implementation. It is suitable for moderate service temperatures and standard operating conditions. This solution also allows good compromise between performance and cost.
ZMS CABLE expert advice :
PVC insulated MV cables are recommended for simple medium voltage distribution networks, indoor installations or projects where thermal constraints are limited.
They are a suitable choice when ease of installation and budget control take precedence over high load or intensive operation requirements..
Rubber insulated medium voltage cables (EPR)
Copper or aluminum conductor + EPR rubber insulation + semiconductor displays + armor (optional) + protective sheath (PVC or LSZH).
Features :
- Very good flexibility, even in high sections
- Excellent thermal and electric resistance
- Good resistance to humidity and vibrations
ZMS CABLE expert advice :
MV cables with EPR insulation are particularly suitable for restrictive environments, where flexibility and thermal stability are essential. They are recommended for industrial installations, power plants, mining sites, as well as areas subject to vibration or mechanical movement.
In projects requiring reduced bending radii, complex routes or severe operating conditions, EPR is often a more reliable alternative than PVC or XLPE.
Armored medium voltage cables
THE armored medium voltage cables are made of a copper or aluminum conductor, XLPE or EPR insulation, a metal screen, armor made of steel wire or metal ribbons, and an outer protective sheath.
Features :
- Reinforced mechanical protection
- Increased resistance to shocks and external stresses
- Suitable for exposed or unprotected installations
ZMS CABLE expert advice
Armored medium voltage cables are recommended when the cable is exposed to mechanical risks, particularly in buried pose, in industrial environment or in areas where natural protection is insufficient.
When the installation conditions are controlled (technical premises, cable trays, protected installation), a version unarmed may be favored in order to reduce the costs and simplify implementation.
Medium voltage cables according to standards
IEC medium voltage cable 60502
Medium voltage cables complying with the NORME IEC 60502 are designed with copper or aluminum conductors, XLPE insulation, semiconductor and metallic displays, as well as an outer sheath adapted to the installation conditions, with or without armor depending on the project.
Features :
- International reference standard for MV cables
- Covers rated voltages of 1 kV to 35 kV
- Strict electrical performance and safety requirements
ZMS CABLE expert advice
IEC standard 60502 is particularly recommended for international projects, the networks of electrical distribution, and industrial infrastructure where compliance with recognized standards is a key tender criterion.
It facilitates compatibility between equipment, technical validation by design offices and acceptance by authorities or end customers.
At ZMS Cable, THE MV IEC cables 60502 can be configured (driver, armor, sheath) to precisely meet installation conditions and project requirements, while strictly respecting the standard.
Medium voltage cables compliant with EN standards
Medium voltage cables complying with EN standards have a structure similar to IEC cables, with copper or aluminum conductors, XLPE insulation, suitable screens and an outer sheath meeting European requirements, with or without armor depending on the installation.
Features :
- European standards widely used in EU projects
- Compatibility with European networks and equipment
- Reinforced requirements for safety and quality
ZMS CABLE expert advice
The standards IN are particularly recommended for European projects, THE public infrastructure and industrial installations that must meet regulatory requirements specific to the European market. In many cases, cables conforming to EN standards are also aligned with IEC 60502, thus facilitating their integration into international projects.
Chez ZMS CABLE, we support our clients to determine whether compliance IEC, IN or combined is best suited to the specifications.
Medium voltage cables for specific applications
Underground medium voltage cables
Copper or aluminum conductor + isolation XLPE ou EPR + metal screen + PE/PVC outer sheath + armor (optional).
Features
- Reinforced insulation for buried installation
- Good resistance to humidity and thermal stress
- Low electrical losses over medium distance
ZMS CABLE expert advice
Underground MV cables are recommended for urban networks, industrial parks and public infrastructure where protection against bad weather and aesthetics are priorities.
For aggressive floors or heavy traffic areas, ZMS CABLE recommends metal armor and a moisture-resistant PE sheath.
Industrial medium voltage cables
Copper or aluminum conductor + isolation XLPE + semiconductor screen + robust outer sheath + armor (depending on installation).
Features
- High current capacity
- Good thermal and mechanical resistance
- Suitable for harsh industrial environments
ZMS CABL expert councilE
These cables are suitable for factories, refineries, power plants and large industrial facilities. ZMS CABLE recommends XLPE insulation for continuous loads and high temperature environments.
submarine medium voltage cable
Copper or aluminum conductor + isolation XLPE ou EPR + semiconductor displays + reinforced metal armor + waterproof and corrosion resistant outer sheath.
Features :
- Excellent seal for permanent immersion
- High mechanical protection against marine stresses
- Electrical stability adapted to MV networks (1–35 kV)
ZMS CABLE expert advice :
Submarine medium voltage cables are recommended for short to medium distance electrical connections, such as island feeding, of coastal areas, of ports, pumping stations or industrial installations close to the coast. In these environments, water resistance, mechanical protection and long-term durability take priority over flexibility.
At ZMS Cable, we recommend precisely defining the installation depth, the nature of the seabed and the mechanical constraints in order to adapt the armor and the outer sheath to the project.
What are the medium voltage cable applications ?
Medium voltage cables are used in many applications, notably :
- Building power supply, factories and industrial installations.
- Transport of electrical energy over long distances in electricity distribution networks.
- Power supply of electrical transport systems, such as trains and trams.
- Food for renewable energy production systems, such as wind turbines and solar power plants.
- Supply to the load of large electrical equipment, such as industrial electric transformers and engines.
- Power supply of maritime and port electrical systems.
ZMS company service
Soverproduction service
ZMS has a wide range of cables and conductors. We provide thoughtful services and professional project solutions to everyone who needs them.
Squality certification services
ZMS cables are manufactured in accordance with GB standards, IEC, BS, NFC, ASTM, DIN and other international standards. Our technical team can customize cable products that meet your requirements based on your needs.
Sprofessional customer service
ZMS provides free professional consultation services to provide you with one-stop project solution services and rapid product delivery solutions.
Sdelivery and shipping services
ZMS provides high quality cables, but also good delivery solutions. While ensuring the safety of product delivery, we provide the best packaging and transportation solutions, thereby significantly reducing customers' transportation costs.
Epackaging of ZMS
ZMS cables are packaged in wooden spools, corrugated cardboard boxes and reels. Cable ends are sealed with BOPP self-adhesive tape and a non-hygroscopic sealing cap to protect cable ends from moisture. We can print the required markings on the exterior of the drum using a waterproof material, according to customer requirements.
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