Submarine Power Cables

Submarine Cable

Subsea Cables are wires wrapped with insulating and waterproof materials and laid underwater on the seabed and rivers for power or communication transmission. Submarine cables provide communication and power transmission for offshore wind power, offshore drilling platforms, island grid interconnection, land island interconnection, and other offshore projects.

ZMS, a professional maritime cable company, has studied the production of submarine cables for many years. Submarine power cables can be anything from 70mm to, exceeding, 210mm in diameter and come in two flavours, AC or High Voltage AC (Alternating Current) and HVDC (High Voltage Direct Current) Submarine Cable. Whether from submarine environment exploration, marine physical investigation, and the world’s large projects’ case study. We also apply sophisticated cable design, manufacturing, and installation methods. The excellent performance and service life of our undersea cables are guaranteed.

ZMS Submarine Power Cable Details

up to 35kV XLPE or EPR insulated compound Al. (Cu.) waterproof sheathed single core submarine power cable
Get a Free Quotation

Up to 35kV XLPE or EPR Insulated Single Core Submarine Cable

Conductor: Cu. Single wire tin-galvanized or not, waterproof materials intermingled during stranding
Conductor screen: Semi-conductive materials extruding layer
Insulation: Xlpe or EPR
Insulation screen: Semi-conductive materials extruding layer
Waterproof layer: Semi-conductive waterproof strip
Metal screen: Copper-tape
Waterproof layer: Semi-conductive waterproof strip
Waterproof sheath: Compound waterproof layer(al.or cu, laminated with pe)
Lapped inner layer: Glued fabric strip and bitumen
Armoring: Seawater-resistant alloy-galvanized steel wire and bitumen
Serving: Steeped fiber ropes

Standard: IEC 60228, IEC 60502, IEC 60840, IEC 62067

up to 35kV XLPE or EPR insulated led-sheath waterproof layer single core submarine power cable
Get a Free Quotation

35kV Insulated Led-Sheath Waterproof Layer Underwater Cable

Conductor: Cu. single wire tin-galvanized or not, waterproof materials intermingled during stranding
Conductor screen: Semi-conductive materials extruding layer
Insulation: Xlpe or EPR
Insulation screen: Semi-conductive materials extruding lanyer
Waterproof layer: Semi-conductive waterproof strip
Metal screen: Lead sheath
Sheath: PE
Lapped inner layer:Geled fabric and bitumen
Armoring:Seawater-resistant alloy-galvanized steel wire or copper wire
Serving: Steeped fiber ropes

Standard: IEC 60228, IEC 60502, IEC 60840, IEC 62067.

up to 35kV XLPE or EPR insulated compound Al.(Cu.) waterproof layer three-core submarine power cable
Get a Free Quotation

Insulated Compound Al.(Cu.) Waterproof Layer 3 Core Undersea Cable

Conductor: Cu. Single wire tin-galvanized or not, waterproof materials intermingled during stranding
Conductor screen: Semi-conductive materials extruding layer
Insulation: Xlpe or EPR
Insulation screen: Semi-conductive materials extruding layer
Waterproof layer: Semi-conductive waterproof strip
Metal screen: Cu tape
Waterproof sheath:Compound waterproof layer(ai.or cu. Laminated with pe)
Filling;anti-humidity material
Lapped inner layer:Geled fabric and bitumen
Armoring: Seawater-resistant alloy-galvanized steel wire and bitumen
Serving: Steeped fiber ropes

Standard: IEC 60228, IEC 60502, IEC 60840, IEC 62067.

Get a Free Quotation

35kV XLPE nsulated Optical Fiber Comprehensive Undersea Cable

Conductor: Cu. single wire tin-galvanized or not, waterproof materials intermingled during stranding
Conductor screen: Semi-conductive materials extruding layer
Insulation:XLPE or EPR
Insulation screen: Semi-conductive material extruding layer
Water-resistant layer: Semi-conductive strip
Metal screen: Cu tape (lead sheath)
Water-resistant layer: Semi-conductive strip
Waterproof sheath: Compound waterproof layer(cu. Or al. Laminated with pe) or lead sheath(extruded led with pe)
Filling: Anti-humidity material
Optical fiber cable: The core no. Can reach 144 with a compound waterproof sheath or lead sheath as a waterproof layer
Lapped inner layer:Geled fabric and bitumen
Armoring: Seawater-resistant alloy-galvanized steel wire and bitumen
Serving: Steeped fiber ropes

Standard: IEC 60228, IEC 60502, IEC 60840, IEC 62067.

110kV,220kV XLPE insulated led sheathed single core submarine power cable and DC submarine power cable
Get a Free Quotation

110/220kV XLPE Insulated Submarine DC Power Cable

Conductor: Cu. single wire tin-galvanized or not, waterproof materials intermingled during stranding
Conductor screen: Semi-conductive tape and extruded semi-conductive material layer
Insulation: XLPE
Insulation screen; extruded semi-conductive material layer
Water-resistant layer: Semi-conductive water-resistant strip
Metal screen: Lead sheath
Sheath: PE
Lapped inner layer geled fabric and bitumen
Armoring: Seawater-resistant alloy-galvanized steel wire or copper wire
Serving: steeped fiber ropes

Standard: IEC 60228, IEC 60502, IEC 60840, IEC 62067.

Structural Dimensions

Single Core Submarine Power Cable/HYJAY41 HEAY41 8.7/10(12)kV

Three Core Submarine Optical Fiber Comprehensive Cable 8.7/10(12)kV

More submarine power cable products

Undersea internet cables can also be divided into submarine communication and power cables according to their uses. Submarine power cable is mainly used for underwater transmission of high-power electricity. It is equivalent to the role of underground power cables, but the difference is the application of the occasion and the way of laying. The purpose of submarine power cables is to transport electric current at high voltage.

HVAC-(High-Voltage-Alternative-Current)-Submarine-Cable

HVAC (High Voltage Alternative Current) Submarine Cable

HVDC-(High-Voltage-Direct-Current)-Subsea-Cable

HVDC (High Voltage Direct Current) Submarine Cable

The internet cables’ basic structure in the ocean is a conductor, insulation, metal shield, metal layer, sheath, filling, armored, composite fiber, auxiliary materials, etc.
— Conductor: for carrying current, usually composed of copper or aluminum.
— Insulation: provides an effective barrier to the extremely high potential difference between the inner and outer potential surfaces, and the commonly used material is now cross-linked polyethylene (XLPE).
— Water barrier sheath: protects the insulation from damage caused by moisture intrusion and maintains the strength of the insulation.
— Armor: Provides mechanical protection and tension stability, and is an important structural element.
— The outer cloak: is used to protect the submarine cable armor during transportation and deep burial installation, usually polypropylene rope (PP rope).
Submarine cable is mainly used underwater, in addition to the need to meet the basic electrical properties, water resistance, and mechanical properties also have higher requirements.

Submarine Cable Structure Types

Underwater-launch-of-submarine-power-cables-2
Laying of shallow submarine cables
Laying of deep sea submarine cables

Subsea cable development so far, the structure designed to make a variety of exploration and experimentation, the main structure includes the following types:

Brief Description Of The Manufacturing Process Of ZMS Submarine Power Cables

Wire drawing machine
Stranding machine
ZMS high-voltage testing of high-voltage or ultra-high-voltage cables
High Pressure Test
Cable placement in drums

The entire manufacturing process of the submarine power cable is the same as the general power cable. The entire manufacturing process of the undersea cable is the same as the general power cable. However, there are special requirements for the mechanical strength and corrosion resistance of the sea cable. And the length of the undersea cable is required to be extended as much as possible.

The following is a brief description of the manufacturing process of impregnated paper cables and extruded insulated submarine cables. Impregnated paper cable is first wrapped with an insulating paper core, followed by vacuum drying, and oil dipping, after completing the conductor core, and then wrapped with lead sheath, which is subject to the process of continuous extrusion.

Extrusion of extremely long cable cores is an extremely important step and must be carried out night and day. The conductor core of the oil-filled cable passes through a siphon transport tube from the storage cylinder to the lead press. The tube is filled with degassing oil, which flows in the opposite direction to the conductor core to isolate the contact between the core and the air.

After the core is covered with lead, it is coiled on a rotating platform (if the cable is oil-filled or inflatable, the appropriate amount of metal reinforcement can be added). Then the underwater cable is covered with a polyethylene sheath (extruded polyethylene sheath is also a continuous operation). And then wrapped with two layers of galvanized steel wire armor, covered with oiled hemp impregnation. In the subsequent production process, the lead sheath and metal strip must be grounded through the polyethylene sheath at the appropriate stage.

Most of the production processes for cross-linked polyethylene cables and ethylene-propylene rubber insulated submarine cables are similar to those for paper-insulated lead-sheathed cables, except for the extrusion and vulcanization of the synthetic rubber insulation. But without the use of a lead sheath.

Prospects Of ZMS Submarine Cables

The complexity of the marine environment of the submarine cable project put forward high requirements, underwater cable engineering is a recognized problem in the world, construction difficulties, and high maintenance costs. And it was only a few companies in the world could lay and commission submarine high-voltage cables. The development of the submarine cable market has been greatly restricted. More issues, but more solutions to the problem. In the future, the application space of submarine cables will be broader, it is important infrastructure equipment and is an important technical support for human beings to achieve the effective expansion of their activity area. It transports clean ocean energy to the mainland, relieving the tension of mainland resources, and also transports mainland energy to the ocean, contributing to the development of the ocean economy.

ZMS Submarine Cable company firmly believes in this. Therefore, we strictly require ourselves. Managed with high-quality products and after-sales service, ZMS cable has a strong technical force, exquisite technology, advanced production equipment, complete testing means, and advanced enterprise management.
The submarine cable products produced by the ZMS cable factory include submarine power cables, submarine communication cables, submarine fiber optic cables, underwater cables, Internet cables in the ocean, and other products. A variety of new products have been researched and independently judged, taking into account the comprehensive factors of equipment, materials, yield, conversion efficiency, quality and cost, and the need to master the right timing for production. For the mainstream technology direction, the company has reserved for mass production and will launch differentiated products according to the characteristics of different markets. Power transfer from energy sources, including offshore renewable energy schemes, to consumers. Interconnecting different regional electrical transmissions.

In recent years, through independent research and development, the company has been breaking through the length and voltage level of underwater cable production and taking the lead in the development of dynamic submarine cable, towing cable, and other special submarine cables. The production of submarine cable-related products is widely used in marine scientific research and resource development and other fields, to assist in the construction of China’s “Ocean Power” strategy.

    We Provide High Quality Products and The Most Professional Cable Accessories Project Solutions.

    Get Free Quote, We Will Reply You In 24 Hour.

    ZMS-Cable-certificate-1024x118