2021UNE-EN 61400-12-1:2018/AC:2021-06 Wind energy generation systems - Part 12-1: Power performance measurement of electricity producing wind turbines
2020UNE-EN 61400-12-1:2018/AC:2020-04 Wind energy generation systems - Part 12-1: Power performance measurements of electricity producing wind turbines
2020UNE-EN 61400-12-1:2018/AC:2019-12 Wind energy generation systems - Part 12-1: Power performance measurement of electricity producing wind turbines
2018UNE-EN 61400-12-1:2018 Wind power generation systems - Part 12-1: Power performance measurement of electricity producing wind turbines
2007UNE-EN 61400-12-1:2007 Wind turbines -- Part 12-1: Power performance measurements of electricity producing wind turbines (IEC 61400-12-1:2005)