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Siemens to provide transformers for HVDC link between England and France

The picture shows the 400 kV HVDC transformers.

"These new HVDC transformers will enable our customer to raise its system to a new level of energy efficiency and reliability," says Beatrix Natter, CEO of the Siemens Transformers Business Unit. "We are proud that the customer has placed the order with us as a reliable technology partner." Siemens will install the new units to fit precisely in the system. For example, the wall openings for cooling all devices are located at different points. In addition, all transformers will be equipped with a sprinkler system for fire safety.
All four transformers are being manufactured in the Nuremberg transformer factory. This factory has many years of experience in building transformers and manufactures HVDC transformers of all sizes up to a voltage level of 1,100 kilovolts (kV), which is currently the world record in transformer manufacturing.
National Grid is one of the world's largest investor-owned utilities focused on transmission and distribution activities in electricity and gas in the UK and US. It plays a vital role in connecting millions of people to the energy they use. The company earned approximately €15.1 billion in 2017.
High-voltage direct-current transmission is characterized by significantly lower transmission losses than alternating-current transmission. The HVDC cross-channel link technology thus makes it possible to efficiently exchange energy in both directions via subsea cables across the English Channel. The 73-kilometer link transmits up to 2,000 megawatts (MW), which means that it can supply up to 3 million homes with power on the English side alone. HVDC therefore represents an important portion of the British power supply. The cross-channel link transmits most of its energy from France to the UK and only in rare cases from the island to the mainland.
Siemens has successfully placed several large HVDC links in operation in recent years. In 2018, the company will supply transformers for the world's most powerful HVDC link, which has a transmission capacity of 12 GW. This experience gained over multiple projects secures the company's position as the market leader in HVDC technology.
Further information on HVDC-Transformers:
Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for 170 years. The company is active around the globe, focusing on the areas of electrification, automation and digitalization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is a leading supplier of efficient power generation and power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2017, which ended on September 30, 2017, Siemens generated revenue of €83.0 billion and net income of €6.2 billion. At the end of September 2017, the company had around 372,000 employees worldwide. Further information is available on the Internet at
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Heiko Jahr

Siemens AG

Freyeslebenstr. 1
91058 Erlangen

+49 (9131) 7-29575