IEC 61400-12-6:2022 ED1

Wind energy generation systems - Part 12-6: Measurement based nacelle transfer function of electricity producing wind turbines IEC 61400-12-6:2022 ED1

Publication date:   Aug 30, 2022

General information

60.60 Standard published   Aug 30, 2022


TC 88

International Standard

27.180   Wind turbine energy systems



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IEC 61400-12-6:2022 specifies a procedure for measuring the nacelle transfer function of a single electricity-producing, horizontal axis wind turbine, which is not considered to be a small wind turbine in accordance with IEC 61400-2. It is expected that this document be used when a valid nacelle transfer function is needed to execute a power performance measurement according to IEC 61400-12-2. This document specifies how to characterise a wind turbine's nacelle transfer function. The nacelle transfer function is determined by collecting simultaneous measurements of nacelle‑measured wind speed and free stream wind speed (as measured on a meteorological mast) for a period that is long enough to establish a statistically significant database over a range of wind speeds and under varying wind and atmospheric conditions. The procedure also provides guidance on determination of measurement uncertainty including assessment of uncertainty sources and recommendations for combining them.
This first edition of IEC 61400-12-6 is part of a structural revision that cancels and replaces the performance standards IEC 61400-12-1:2017 and IEC 61400-12-2:2013. The structural revision contains no technical changes with respect to IEC 61400-12-1:2017 and IEC 61400‑12‑2:2013, but the parts that relate to wind measurements, measurement of site calibration and assessment of obstacle and terrain have been extracted into separate standards.

Life cycle


IEC 61400-12-2:2013 ED1

IEC 61400-12-1:2017 ED2


IEC 61400-12-6:2022 ED1
60.60 Standard published
Aug 30, 2022