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.
Performances du câble IEC 60840
| Propriété | Description |
| Rated voltage | 30 kV to 150 kV (Um until 170 kV) |
| Service temperature (driver) | Until 90 °C en fonctionnement continu |
| Short-circuit temperature | Until 250 °C (5 s max.) |
| Minimum bend radius | ≥ 15 × D (without armor)≥ 20 × D (avec armure) |
| Effort de traction maximal | Dépend de la section et du matériau du conducteur |
| Résistance diélectrique | Conforme aux essais de tenue électrique IEC 60840 |
| Humidity resistance | Good, avec possibilité d’options de blocage d’eau |
| Durée de vie nominale | ≥ 30 years under normal operating conditions |
| Type d’installation | Fixe, pose souterraine ou en infrastructure dédiée |
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.
Questions fréquentes (FAQ) – Câble IEC 60840
1. The IEC cable 60840 est-il adapté à une installation souterraine ?
Oui. Les câbles conformes à la norme IEC 60840 are largement utilisés en pose souterraine, notamment dans les réseaux de transport, les postes électriques et les infrastructures fixes.
Depending on the installation conditions, of the options de protection mécanique et de blocage d’eau peuvent être intégrées.
2. The IEC cable 60840 nécessite-t-il obligatoirement une armure ?
Non. L’armure n’est pas obligatoire According to IEC standard 60840.
Elle est utilisée uniquement lorsque les conditions de pose l’exigent, par exemple en présence de contraintes mécaniques élevées ou de risques d’endommagement.
Services & Delivery at ZMS Cable
Personalized manufacturing service (OEM / ODM) : Conception et production de tailor -made cables selon vos spécifications techniques, 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.