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N149 picture 2TÜV SÜD Industrie Service has awarded the IEC type certificate for the N149/4.0-4.5 turbine from the Delta4000 series. The type certificate officially confirms that the theoretical design calculations for the N149/4.0-4.5 done by the Nordex Group reflect the figures for the turbines actually measured in the field.
This is in fact a confirmation of the power performance and mechanical loads during operation as well as the lifetime of the turbine type under different operating modes. At the same time the NR74.5 rotor blade was certified for a lifetime of minimum 20 years on the basis of a dynamic, physical rotor blade test. The certification is based on a measuring and validation programme over the past twelve months with the N149/4.0-4.5 turbines installed in summer 2018. The IEC type certificate for the N149/4.0-4.5 covers the turbine options with hub heights of 105, 120, 125, 135, 145, 155 and 164 metres both for steel, concrete and hybrid tower versions. The NR74.5 rotor blade is also certified with the anti-icing solution.
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