1. BS EN 61400-4:2013 Wind turbines Part 4: Design requirements for wind turbine gearboxe

2. BS EN 61400-11:2013 Wind turbines Part 11: Acoustic noise measurement techniques

3. BS EN 61400-12-2:2013 Wind turbines Part 12-2: Power performance of electricity-producing wind turbines based on nacelle anemometry

4. BS EN 61400-13:2016 Wind turbines Part 13: Measurement of mechanical loads

5. BS EN 61400-21:2008 Wind turbines - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines

6. BS EN 61400-22:2011 Wind turbines Part 22: Conformity testing and certification

7. BS EN 61400-23:2014 Wind turbines Part 23: Full-scale structural testing of rotor blades

8. BS EN 61400-25-1:2007 Wind turbines - Part 25-1: Communications for monitoring and control of wind power plants - Overall description of principles and models

9. BS EN 61400-25-2:2015 Wind turbines Part 25-2: Communications for monitoring and control of wind power plants - Information models

10. BS EN 61400-25-3:2015 Wind turbines Part 25-3: Communications for monitoring and control of wind power plants - Information exchange models