NSW ® Submarine Power Cables for the future, delivered today NORDDEUTSCHE SEEKABELWERKE GMBH (NSW) The submarine competence center within the General Cable Group After NSW was founded in 1899 1899. NSW was already laying its as fiber-optic accessories, e. g. by Felten & Guilleaume and the first submarine telecommunica- hang-off heads, cable protection Deutsch-Atlantische Telegraphen- tion cable in 1904, approximately systems, power connectors, cable gesellschaft, Siemens became 7,993 kilometers in length. joints, topside cables, fibre-optic one of its major shareholders in splice equipments and any other 1931, and acquired the remaining A century of experience in required cable accessories and stock in 1995. In 2000, NSW armored and non-armored supplies. became a subsidiary of Corning submarine cables for carrying Cable Systems. Since 2007, NSW power, signals, communications Taking customer requirements has been a 100-percent member and fiber-optic applications into account, we offer high quality of the General Cable Corporation has formed the foundation for tailor-made solutions or standard (NYSE:BGC) and has become the a forward-looking organization products from world-leading competence center for submarine committed to innovation and manufacturers. cables for the General Cable Group. unrivalled customer service. The installation, termination and NSW benefits not only from General NSW’s research-and-development testing of the cables and their Cable’s profound expertise but and product-management teams related accessories will be per- also from its global reach in the work in close cooperation with formed by our own highly qualified wire and cable industry. Quality, General Cable’s experts for power team of jointers or by well-known state-of-the-art technology and transmission as well as leading specialised companies under customer focus are General engineering companies to create supervision of NSW. Cable’s top priorities. state-of-the-art solutions for many of the world’s leading power utili- Experience, Innovation ties and the oil and gas industry. and Service Norddeutsche Seekabelwerke Full Service Provider GmbH (NSW) has been manufac- NSW offers the full range of turing underwater cables since mechanical, electrical as well SUBMARINE POWER CABLES FOR RENEWABLE ENERGIES Power transmission and distri- NSW ® Submarine Power Cables cases. As recognized experts in bution are becoming more and are supplied in all the required submarine power cables for the more important to the sustain- lengths. Based on our outstanding offshore oil and gas industry, NSW able energy concept; alternatives history as well as on a wide range can offer these solutions by meet- to fossil fuels are a necessity for of recent projects we are most ex- ing the most stringent of industrial avoiding the disadvantages of CO² perienced with all types of turbine requirements. We offer custom- emissions. Windfarms, tidal power and platform connections. ised, flexible cable solutions, while plants and wave-energy converter at the same time being able to farms (WEC) are possible answers Successful and in-time completion access our far-ranging technical to this question, which we support of projects in the North and Baltic knowledge of cable designs. proactively with innovative cable Seas have made NSW a valuable NSW ® Submarine Power Cables concepts. partner for national and inter- are reliable and cost-effective national power utilities, and for even under extreme conditions. Offshore Wind Farms windfarm developers. NSW demonstrate extensive ex- Island Connections perience in delivering and laying Offshore Oil and Gas Industry NSW ® Submarine Power Cables cables for the growing offshore Fundamental changes in the connect islands to onshore power wind industry. Together with our exploitation infrastructure in the grids. Helgoland’s link to the customers, we supply individu- global oil and gas industry do German power grid with a 53 km ally tailored solutions for power require state-of-the-art transmis- MV / AC cable is one of our finest transmission, both for in-field sion and distribution solutions, reference projects. Since 2009, cabling of the wind turbines, and based on highly reliable cable this North Sea island, well- also for connecting windfarms to designs. As a consequence, tailor- known both for its tourism and transformer substations. made solutions are needed in most for its large nature reserve, has no longer needed any diesel gen- erators for producing electricity. The team from NSW has proved that cables can be properly laid even in biosphere reservations in full compliance with the needs of both technology and the natural environment. DESIGN OF SUBMARINE POWER CABLES NSW ® Submarine Power Cables are used 1 for various medium and high voltage appli- 2 cations, e. g. in offshore wind farms, the oil & gas industry, island connections, static 3 tidal and wave power applications as well 4 as lake and river crossings. 5 National and international standards, e. g. IEC, VDE and CIGRE Electra recommenda- tions are respected in NSW’s cable design, manufacturing and testing. 6 NSW offers several cable design options according to individual customer require- ments and environmental conditions, e. g. 7 concentric or segmented conductors, XLPE or EPR insulations, tape or wire screens and radial metallic water barri- ers. The components can also be adapted to peripheral equipment like DTS systems 8 for real-time temperature monitoring. Tailor-made solutions for specific ap- plications are available. Even complex 9 composite cables with different power and communication elements can be designed and manufactured. HV DC cables as well as inter-array cables operating at increased voltage levels are within the 10 product range of NSW. 11 High-Voltage AC 12 Submarine Cables up to 270 kV Example: 3 × 1200 mm² Cu 87 / 150 kV 1 1200 mm² Milliken conductor, water blocked 2 Inner semi-conductive layer 3 XLPE insulation 4 Outer semi-conductive layer 5 Swelling tape 6 Lead sheath 7 Outer sheath semi-conductive PE 8 F i l l e r 9 Fibre-optic element 10 Bedding layer 11 Galvanized steel wires filled with bitumen compound 12 PP yarn cladding 1 2 3 4 Medium Voltage and Array AC Submarine Cables up to 66 kV 5 Example: 3 × 120 mm² Cu 18 / 30 kV 6 7 1 120 mm² round conductor, water blocked 8 2 Inner semi-conductive layer 9 3 XLPE insulation 10 4 Outer semi-conductive layer 11 5 Swelling tape 12 6 Copper counter helix 13 7 Copper wire screen 14 8 Swelling tape 15 9 Aluminium tape 10 Outer sheath 11 Filler 12 Fibre-optic element 13 Bedding layer 14 Galvanized steel wires filled with bitumen compound 15 PP yarn cladding 1 2 3 4 High-Voltage 5 DC Submarine Cables up to 320 kV Example: 1 × 630 mm² Cu ± 250 kV 6 1 630 mm² round conductor, water blocked 2 Inner semi-conductive layer 3 XLPE insulation 7 4 Outer semi-conductive layer 5 Swelling tape 8 6 Lead sheath 7 Outer sheath PE 9 8 Bedding layer 9 Galvanized steel wires filled with bitumen compound 10 PP yarn cladding 10 All illustrations are examples for NSW ® Submarine Power Cable designs. Please contact NSW for further information. Illustrations are on a scale of 1 : 2.26 INSTALLATION OF SUBMARINE POWER CABLES For over one century, NSW has complete cable design, engineering the River Weser. Minimum water been acquiring unsurpassed and installation capabilities, to depth is maintained at 10 m, thus experience and a proven track meet even the most challenging providing access to all sizes of record in submarine cable instal- requirements of interconnection, cable vessels. The cable load-out lation. Since 2009, NSW has been export and infield sea cable proj- system reaching from the factory using this experience also for the ects. Customers benefit from our to the pier is designed to enable installation of submarine power long-term project management ex- continuous lengths of submarine cables, as turn-key solutions with perience in submarine cable instal- cables to be transferred from the own installation spreads, or with lation for the telecommunication storage areas to the vessel in a chartered Installation & Trenching market as well as from a proven two-line parallel loading activity. Support Vessels. track record in turnkey solutions for the offshore wind industry. Cable Installation Project Management NSW provides specific solutions and Engineering Cable Loading for a wide variety of cable installa- NSW’s experienced marine engi- at NSW Facilities tion applications as defined by neering team, in close cooperation NSW’s Nordenham facility incor- water depth, seabed conditions with our project implementation porates its own deep water pier, and deployed offshore structures. department, offers full-coverage which is located near the mouth of Key personnel to supervise loading, laying and installation cable engines, cranes and sophis- Quality Management at NSW procedures are readily available ticated submarine sensors associ- Out of conviction, NSW has implemented within our regular staff. ated with cable installation. quality standards in its company processes and expanded them to an integrated NSW is an EC member of the In- The barge’s flexible cable system management system according to ISO ternational Cable Protection has a capacity of up to 3,500 tons 9001 and ISO 14001. As work safety is an Committee (ICPC) and all opera- of cable. For cable lay and burial essential part of NSW’s philosophy, we tions, whether cable installation, a vertical injector is utilized, are also certified according to BS OHSAS survey, pre-lay grapnel run / route enabling burial depths up to 7.5 m 18001. Consequently, the synergies cre- clearance or post-lay burial are in one simultaneous operation ated by a holistic system can be employed performed in accordance with the up to water depths of 35 m. The in the interests of our customers. applicable ICPC recommendations NOSTAG 10 is beachable, and Independent companies use regularly and local legislative requirements.