DS/EN IEC 61400-5:2020

Wind energy generation systems - Part 5: Wind turbine blades

This part of IEC 61400 specifies requirements to ensure the engineering integrity of wind*turbine blades as well as an appropriate level of operational safety throughout the design*lifetime. It includes requirements for:*• aerodynamic and structural design,*• material selection, evaluation and testing,*• manufacture (including associated quality management),*• transportation, installation, operation and maintenance of the blades.*The purpose of this document is to provide a technical reference for designers,*manufacturers, purchasers, operators, third party organizations and material suppliers, as*well as to define requirements for certification.*With respect to certification, this document provides the detailed basis for fulfilling the current*requirements of the IECRE system, as well as other IEC standards relevant to wind turbine*blades. When used for certification, the applicability of each portion of this document should*be determined based on the extent of certification, and associated certification modules per*the IECRE system.*The rotor blade is defined as all components integrated in the blade design, excluding*removable bolts in the blade root connection and support structures for installation.*This document is intended to be applied to rotor blades for all wind turbines. For rotor blades*used on small wind turbines according to IEC 61400-2, the requirements in that document are*applicable.*At the time this document was written, most blades were produced for horizontal axis wind*turbines. The blades were mostly made of fiber reinforced plastics. However, most principles*given in this document would be applicable to any rotor blade configuration, size and material.