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Nordex unveils 3.9MW upgrade

N131/3900 model will be offered with hub heights up to 131 metres

Nordex unveils 3.9MW upgrade image

Nordex Group has launched an upgraded version of its N131 wind turbine model raising capacity to 3.9MW.

The N131/3900 is an enhanced version of the N131/3600 and raises the nominal output by 8% to achieve yield gains of between 1% and 4%, the German manufacturer said.

The new turbine will be offered with hub heights of up to 134 metres.

It will be available in North America as well as large parts of Europe from January 2018, with the first N131/3900 scheduled to be installed in Germany at the end of 2017.

Nordex said acoustic emissions could be kept to 106.2 decibels by using serrations at the rear edges of the blade, despite the increased output.

Noise-optimised operation modes are also available, meaning that the turbine can also be used in sound-sensitive locations, the company added.

Nordex will also now offer the N131/3600 for medium wind speed locations, as well as for light wind conditions.

The turbine will be available at hub heights of between 84 and 134 metres and will have noise levels of 104.9 decibels because of blade serrations.

The company said the rotor sweep in this wind class is 25% greater than that of the medium-wind turbine N117/3600, improving turbine yields by up to 15%.

The first turbine of this type was installed in January close to Husum in northern Germany, Nordex said.

Image: Nordex

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