IEC 61400-12-1:2017

The IEC 61400-12-1 is the most important standard for wind measurement. This standard specifies the correct set-up of a met mast including installation of sensors. It describes the quality of sensors installed on the met mast with regard to accuracy and reliability. Additionally, it defines a set of criteria with regard to data quantity and quality.

In 2022, IEC 61400-12-1 was getting too big. For this reason it has been decided to split it in altogether 10 components.
So the IEC 61400-12-1:2017 “mother norm” is withdrawn, the work will be pursued in the 10 “daughter norm”:

IEC 61400-12 -1 to -6 for measurement of wind turbine power
IEC 61400-50-1 to -4 for the measurement of the wind speed

IEC 61400-50-1: 2022	Measuring wind speed with mast anemometry	extracted without modification from the IEC 61400-12-1: 2017
IEC 61400-50-2: 2022	Measuring wind speed with ground-based remote sensors	LiDARs; extracted without modification from the IEC 61400-12-1: 2017
IEC 61400-50-3: 2022	Measuring wind speed with nacelle mounted LiDAR)	new content, not included in the IEC 61400-12-1: 2017
IEC 61400-50-4:	Measuring wind speed with floating, buoy-mounted LiDAR	new content, not included in the IEC 61400-12-1: 2017 not yet available