IEC cable 60840
The IEC cable 60840 is a high voltage electrical cable with extruded insulation (XLPE), designed for the transport and distribution of electrical energy in electricity networks 30 has 150 kV (Um until 170 kV).
This cable is complies with the international IEC standard 60840, which defines technical requirements and tests applicable to high voltage cables and accessories.
It is mainly used in high voltage transmission networks, THE transformation stations and fixed underground installations, where electrical reliability, sustainability and compliance with international normative requirements are essential.
Technical characteristics of the IEC cable 60840
Cable structure
| Component | Description |
| Driver | Copper or aluminum, Toron, Compliant with IEC 60228 |
| Internal semiconductor display | Extruded semiconductor layer around the conductor |
| Isolation | XLPE (cross-linked polyethylene), high dielectric strength |
| External semiconductor display | Extruded semiconductor layer around the insulation |
| Metal screen | Copper wires or ribbons providing grounding,complies with IEC grounding requirements 60840 |
| Separation layer (bedding) | PE or non-hygroscopic materials, mechanical protection |
| Armor (if necessary) | Galvanized steel tapes or wires, depending on the installation conditions |
| Outer sheath | Or PVC, UV resistance, chemical and humidity |
Design options depending on project conditions
Depending on the installation conditions (underground installation, humid environment, presence of water), the IEC cable 60840 can integrate water blocking devices, such as :
- puffy ribbons (swellable tapes)
- longitudinal metal barriers (aluminum tape)
These solutions are optional and defined according to the specific requirements of the project, while respecting the IEC standard 60840.
IEC cable performance 60840
| Property | Description |
| Rated voltage | 30 kV to 150 kV (Um until 170 kV) |
| Service temperature (driver) | Until 90 °C in continuous operation |
| Short-circuit temperature | Until 250 °C (5 s max.) |
| Minimum bend radius | ≥ 15 × D (without armor)≥ 20 × D (with armor) |
| Effort de traction maximal | Depends on conductor section and material |
| Dielectric strength | Complies with IEC electrical withstand tests 60840 |
| Humidity resistance | Good, with possibility of water blocking options |
| Rated life | ≥ 30 years under normal operating conditions |
| Type d’installation | Fixe, underground installation or in dedicated infrastructure |
IEC 60840 vs IEC 62067 : what a difference ?
The standards IEC 60840 et IEC 62067 apply to XLPE high voltage cables intended for electricity transmission networks.
The main difference lies in the voltage level covered and the type of project targeted.
| Criteria | IEC 60840 | IEC 62067 |
| Voltage range | 30 kV to 150 kV | Greater than 150 kV |
| Cable type | HV high voltage cable | Very high voltage cable (THT) |
| Isolation | XLPE (extruded insulation) | XLPE renforcée |
| Typical applications | Transportation networks, electrical posts, HT industrial installations | Long-distance transport networks, THT interconnections |
| Testing Requirements | HT electrical and mechanical tests | Stricter testing (THT, high thermal stresses) |
| Project cost | More controlled | Higher |
| Installation complexity | Standard HT | More demanding installation |
ZMS CABLE expert advice :
The choice of standard must be based on actual voltage level and specific project requirements.
- For projects of high voltage electricity transmission 30 has 150 kV, ZMS CABLE recommends the use of cables conforming to the IEC standard 60840, offering a optimal balance between technical reliability and project cost control.
- For projects beyond 150 kV, involving higher electrical constraints and significant transport distances, it is recommended to opt for cables conforming to the IEC standard 62067.
Advantages of IEC cable 60840 ZMS CABLE
Inasmuch as IEC cable supplier 60840, ZMS CABLE relies on a rigorous and project-oriented technical approach, in order to offer reliable high voltage cables, sustainable and compliant with the requirements of energy transport networks.
- Strict compliance with IEC standard 60840
IEC cables 60840 ZMS CABLE are designed, manufactured and tested in accordance with the requirements of the standard, guaranteeing perfect compatibility with international high-voltage transmission networks. - Long-term electrical reliability
Thanks to a mastered design of XLPE insulation and screens, cables ensure lasting electrical stability, even under demanding operating conditions. - Long life
High quality materials and manufacturing controls achieve a service life suitable for long-term HV projects, with constant performance over time. - Customized solutions according to the project
As an IEC cable supplier 60840, ZMS CABLE offers configurations adapted to real installation conditions : type of installation, environment, mechanical constraints and specific network requirements. - Technical support before the project
ZMS CABLE technical teams support customers from the study phase, to facilitate the choice of IEC cable 60840 most suitable and optimize the overall reliability of the project.
Applications of IEC cable 60840
The IEC cable 60840 is widely used in HV energy transmission cable projects, where electrical reliability, thermal performance and long-term durability are essential. It is ideal for the following applications :
- High voltage electricity transmission networks
Used for transporting energy over long distances, in overhead networks converted underground or in interconnected HV links. - HV transformation and distribution stations
Suitable for connections between transformers, busbars and HV equipment, guaranteeing stable and secure transmission. - High voltage underground installations (HT)
Ideal for buried installations in urban or industrial environments, where the mechanical protection and reliability of the HV cable are priorities. - High voltage industrial projects
Suitable for heavy industrial infrastructure (factories, energy sites, mining projects), requiring an HV energy transport cable compliant with international standards.
Frequently asked questions (FAQ) – IEC cable 60840
1. The IEC cable 60840 is it suitable for underground installation ?
Oui. Cables conform to the IEC standard 60840 are widely used in underground installation, particularly in transport networks, electrical substations and fixed infrastructure.
Depending on the installation conditions, of the Mechanical protection and water blocking options can be integrated.
2. The IEC cable 60840 does it necessarily require armor ?
Non. Armor is not required According to IEC standard 60840.
It is used only when the installation conditions require it., for example in the presence of high mechanical stress or risk of damage.
3. The IEC cable 60840 can it be customized according to the project ?
Oui. Although the IEC standard 60840 defines a strict framework, the structure of the cable can be adapted depending onn :
- the type of installation
- the installation environment
- mechanical and climatic constraints
While respecting the normative requirements.
4. How long does an IEC cable last? 60840 ?
Under normal operating conditions, a cable conforming to the IEC standard 60840 is designed to provide a lifespan ofat least 30 ans.
This longevity is based on the quality of the materials (isolation XLPE, screens, sheath) as well as compliance with recommended installation practices for medium and high voltage networks.
Services & Delivery at ZMS Cable
Personalized manufacturing service (OEM / ODM) : Design and production of tailor -made cables according to your technical specifications, with customization of the marking, Colors and packaging.
Rapid global logistics : Shipping shipping, terrestrial or air to more than 130 pays ; Flexible delivery according to your deadlines.
Certified quality : All products are tested before shipping ; conformity this / IEC / NFC / ISO ; test reports provided on request.
Neat and customizable packaging : ZMS cables are packaged on wooden coils, wavy boxes or drums, with hermetically sealed ends for moisture protection. Outdoor marking can be printed on request with waterproof materials.
Dedicated technical support : Our engineers and advisers accompany you in the choice of the electric cable most suited to your installations, in accordance with local standards.