A Best Submarine Cable Manufacturer in China Since 2006
Being a professional submarine cable manufacturer over 20 years, we have developed and innovated to provide you a package supply of the cable, cable shipping & installation and cable accessories, like
- Cable Joint (middle & terminal)
- Submarine Cable Clamp
- Cable Amouring Anchor
- Cable Pulling Head & Cable Protection Tube etc
What is a Submarine Cable
It is one type of special cables buried into rivers, lakes,seas and the oceans, used to transmit telecommunication signals or power energy. It can be divided into submarine fiber optic cable, Submarine power cable and submarine power cable composite with optical fibers, for dual functions. Due to its hazardous application conditions, it required to have several layers to protect the core of a submarine cable,which also have a much higher requirement of these raw materials. Normally, it is a tailored product with a continues length, which need to shipped by some special trucks or loaded onto a ship directly.
PowerTel & its associated factory can provide you one-stop service for submarine cable design, manufacturing, laying & installation, testing, operation and maintenance, and emergency repair, and sumarine cable accessory; starting from technical consulting for your project and without any end point.
Submarine Power Cable
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AC 12/20 kV Submarine Power Cable -
AC 18/30 kV Submarine Power Cable -
AC 26/35 kV Submarine Power Cable -
AC 48/66 kV Submarine Power Cable -
AC 64/110 kV Submarine Power Cable
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AC 127/220 kV Submarine Power Cable
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DC 200 kV Submarine Power Cable
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DC 250 kV Submarine Power Cable
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DC 320 kV Submarine Power Cable
Main Features of Our Submarine Cable
State-of-the-Art Manufacturing Facilities
We have an annual production capacity of 5000 km for different types of submarine fiber optical cable, thanks to our six armoring lines. Additionally, we are able to provide tailored types of submarine fiber cable based on the specific requirements of any given project.
State-of-the-Art Manufacturing Facilities
Our plant is well equipped with two Voltage Controlled Voltage (VCV) lines, which are capable of handling cables up to 500kV, and two Constant Controlled Voltage (CCV) lines for cables up to 220kV. All the machinery is suitable for triple extrusion of XLPE with a dry cooling system, as well as a degassing system. The materials used are of the highest quality, sourced from reputable international brands, like Borealis, Dow Chemical
Storage Spools for Finished Submarine Cable
Our plant is also equipped with the latest technology allowing us to have the production of submarine cables in a much longer length. It has 10 storage spools for finished cables, as well as two large outdoor spools for the storage of finished submarine fiber optic cable & submarine power cable.
In-house Testing Facilities
Cable testing is an essential part of processing a contract. To ensure submarine cable quality, a complete testing facilities center has been established within the plant , including mechanical tests such as tensile and bending tests, coiling, impact, crush, and environmental tests, like aging tests, water penetration tests etc.
One-stop Service Provider for Submarine Cable
Our international–level professionals in ship–laying and installation, combined with our experienced construction personnel, allow us to offer a range of construction services for submarine cable, including cable laying, installation, and transportation from the factory.
Complete Product Chain for Submarine Cable Project
Except Submarine fiber optic cable and submarine power cable, we are still available of cable accessory and its installation, like straight cable joint, cable terminal kit, cable link box, cable clamp, cable armoring anchor and cable pulling head etc.
Related Product
Configuration of a submarine cable
The cables are designed to withstand the harsh underwater conditions. It typically has several layers, including:
- Inner Core: Made of an optical unit housing 12 to hundreds of optical fibers that transmit data using light signalsor made of aluminum or copper conductor for power transmission or for both application in a single cable.
- Insulation: To protect water penetrate into the optical unit to damage the fibers or the conductors, which potentially cause a short circuit.
Armor: this is also a very important layer for a submarine cable. Normally, it is made of a steel tape, lead, or steel wire to strengthen the cable for some potential attacks in the water, to protect the cable against abrasion, anchoring, and other external threats.
- Outer Sheath: A protective layer, a double protection for the cable.
What types of submarine cables are there
For Submarine fiber optic cable, it has two main categories with or without a repeater system in a cable structure with non-armor, single armor and double armoring layers, which need to take considerations into local geological,hydro-logical and meteorological conditions when design the cable.
For Submarine power cables, Commonly, it has three main types as well, Alternative current submarine power cable,which is more common and buried a lot around the world, due to his lower cost, easy to make and easy to do maintenance work ; the other one is DC submarine cable, which has a lower loss and suitable for long distance power transmission, preferred by some oil & gas companies and some electrical utilities, and it is very expensive.
Composite Submarine cable, it consist of some optical fibers for telecommunication and aluminum or copper conductors for power transmission.
Testing and acceptance of submarine cables
After the submarine cable is laid and buried, the testing and acceptance work should be carried out in strict accordance with the requirements of the construction quality control plan. The inspection items include cable resistance, insulation resistance, sheath continuity, and grounding resistance. If the test results are qualified, the cable is accepted and put into normal operation.