UN 132câble sous-marin kV is a high-voltage power transmission cable designed for underwater installation. It is widely used in offshore wind farms, island power supply systems, and cross-sea electrical grid connections. These cables must operate reliably in extreme marine environments where they face challenges such as high water pressure, corrosion par l'eau salée, mouvement des fonds marins, and mechanical damage from anchors or fishing equipment.
Modern submarine cables typically use XLPE insulation technology, copper or aluminum conductors, metallic water barriers, and strong steel wire armoring. These features ensure high electrical reliability and long service life, usually exceeding 30–40 ans.
Structure, conductor sizes from 25 mm² à 2500 mm², intensité admissible, Spécifications techniques, installation methods, international standards, et facteurs de prix for 132kV submarine cables.
What Is a 132kV Submarine Cable?
UN 132kV submarine power cable is a medium-to-high voltage transmission cable installed under water to deliver electrical power between land areas separated by water.
Les applications typiques incluent:
- Câbles d'exportation pour parcs éoliens offshore
- Island grid interconnection
- Cross-sea power transmission
- Plateformes pétrolières et gazières offshore
- Coastal power infrastructure projects
Compared with underground cables, submarine cables require stronger mechanical protection and more sophisticated water-blocking systems.
Structure of 132kV XLPE Submarine Cable
Un typique 132kV XLPE insulated submarine cable consists of several layers designed to provide electrical insulation, force mécanique, et protection de l'environnement.
Standard Cable Construction
- Stranded copper or aluminum conductor
- Conductor semiconductive screen
- XLPE insulation layer
- Insulation semiconductive screen
- Écran métallique (copper wire or copper tape)
- Longitudinal water-blocking layer
- Lead sheath or aluminum sheath
- Couche de litière
- Steel wire armor
- Outer polyethylene sheath
Function of Each Layer
Conducteur
The conductor carries electrical current. Copper conductors provide higher conductivity, while aluminum conductors reduce weight.
Isolation XLPE
Cross-linked polyethylene insulation provides excellent dielectric strength and thermal stability.
Metallic Sheath
The lead or aluminum sheath prevents water penetration and protects the insulation.
Armure en fil d'acier
Steel armoring protects the cable from mechanical damage during installation and operation.
Conductor Cross Section Range (25 mm² – 2500 mm²)
Un professionnel fabricant de câbles sous-marins can produce cables with a wide range of conductor sizes to meet different transmission requirements.
Standard Conductor Sizes
25 mm²
35 mm²
50 mm²
70 mm²
95 mm²
120 mm²
150 mm²
185 mm²
240 mm²
300 mm²
400 mm²
500 mm²
630 mm²
800 mm²
1000 mm²
1200 mm²
1400 mm²
1600 mm²
1800 mm²
2000 mm²
2200 mm²
2500 mm²
Smaller conductor sizes are used for shorter distances or lower loads, while larger sizes are used in high-capacity offshore transmission systems.
132kV Submarine Cable Technical Specifications
Below is a representative technical parameter table for a typical 132kV submarine cable.
| Parameter | Typical Value |
|---|---|
| Tension nominale | 76/132 kV |
| Conductor Material | Cuivre / Aluminium |
| Type d'isolation | XLPE |
| Maximum Operating Temperature | 90°C |
| Short-Circuit Temperature | 250°C |
| Metallic Screen | Copper wires or tapes |
| Water Barrier | Lead sheath or aluminum sheath |
| Armor Type | Galvanized steel wire |
| Gaine extérieure | PEHD |
| Installation Method | Seabed laying or burial |
Actual specifications may vary depending on project design requirements.
Capacité de charge actuelle (Ampleur)
Le ampacity of submarine cable depends on conductor size, seabed thermal resistivity, water temperature, and installation conditions.
Below is a typical current carrying capacity table for copper conductor submarine cables.
| Taille du conducteur (mm²) | Capacité actuelle (UN) |
|---|---|
| 25 | 120 |
| 35 | 150 |
| 50 | 190 |
| 70 | 240 |
| 95 | 300 |
| 120 | 340 |
| 150 | 380 |
| 185 | 430 |
| 240 | 500 |
| 300 | 570 |
| 400 | 650 |
| 500 | 730 |
| 630 | 820 |
| 800 | 920 |
| 1000 | 1050 |
| 1200 | 1150 |
| 1400 | 1250 |
| 1600 | 1350 |
| 1800 | 1450 |
| 2000 | 1550 |
| 2200 | 1650 |
| 2500 | 1800 |
For precise engineering design, the ampacity must be calculated based on actual installation conditions.
International Standards for Submarine Cables
High-voltage submarine cables must comply with strict international standards.
Common standards include:
CEI 62067 – Power cables above 150 kV
CEI 60840 – Power cables up to 150 kV
CEI 60228 – Conducteurs de câbles isolés
CIGRE recommendations for submarine cable systems
These standards ensure safe operation, high reliability, and compatibility with power grids.
Manufacturing Process of 132kV Submarine Cable
Manufacturing a high voltage submarine cable requires advanced production technology and strict quality control.
Main Production Steps
Conductor stranding
Semiconductive layer extrusion
XLPE insulation extrusion
Insulation shielding
Degassing process
Metallic sheath forming
Steel wire armoring
Outer sheath extrusion
High-voltage electrical testing
Each stage must meet strict technical specifications.
Processus d'installation des câbles sous-marins
Installing submarine cables is a complex engineering task requiring specialized vessels and equipment.
Typical Installation Steps
Marine route survey
Seabed preparation
Cable laying using cable-laying vessels
Cable burial using jetting machines
Cable jointing and termination
Final inspection and testing
Proper installation significantly increases cable lifespan and reduces failure risks.
Factors Affecting Submarine Cable Price
Le price of a 132kV submarine cable depends on multiple technical and economic factors.
Key price factors include:
Conductor material (cuivre ou aluminium)
Conductor cross-section size
Cable length
Armor design
Metallic sheath type
Installation depth
Transportation and installation costs
Large conductor sizes such as 2000 mm² or 2500 mm² submarine cables can cost significantly more due to higher material consumption.
Advantages of XLPE Submarine Cable
Modern XLPE insulated submarine cables provide several advantages compared with older oil-filled cable designs.
Les avantages incluent:
Higher thermal capacity
Better dielectric performance
Lower maintenance requirements
Environmentally friendly design
Longue durée de vie
Lower transmission losses
These advantages make XLPE submarine cables the preferred solution for offshore power transmission projects.
Why Choose a Professional Submarine Cable Manufacturer
Choosing an experienced 132kV submarine cable manufacturer ensures the quality and reliability of the cable system.
A qualified manufacturer should provide:
Advanced high-voltage cable production lines
Large cross-section conductor manufacturing capability
Complete electrical testing laboratories
International certifications
Engineering and installation support
Experienced manufacturers also help optimize cable design according to project conditions.
Frequently Asked Questions About 132kV Submarine Cable
What is the lifespan of a submarine cable?
Most high-voltage submarine cables are designed to operate for 30 à 40 années under normal conditions.
What insulation is used in submarine cables?
Modern cables use Isolation XLPE, which provides excellent electrical and thermal performance.
What conductor size is used in offshore wind farms?
Common sizes for offshore wind projects include 630 mm², 800 mm², 1000 mm², et 1200 mm².
How deep can submarine cables be installed?
Submarine cables can be installed at depths exceeding 1000 meters, depending on project requirements.
Are submarine cables buried?
Many submarine cables are buried in the seabed using jetting machines to protect them from external damage.
132câble sous-marin kV
Le 132câble sous-marin kV is a critical component of offshore energy systems and cross-sea power transmission infrastructure. With conductor cross-sections ranging from 25 mm² à 2500 mm², these cables can support a wide range of electrical loads and transmission distances.
Thanks to advanced XLPE insulation technology, robust steel wire armoring, and strict manufacturing standards, modern submarine cables offer high electrical reliability, excellent mechanical protection, and long service life in challenging marine environments.
As offshore wind power and marine energy projects continue to expand worldwide, the demand for high-quality submarine cable manufacturers and reliable underwater power transmission systems will continue to grow.