IEC 61400-2:2013

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principal elements
I Design evaluation
6 External conditions
7 Structural design
8 Protection and shutdown system
9 Electrical system
10 Support structure
11 Documentation requirements
12 Wind turbine markings
II Type testing
13 Testing
Annex A (informative) - Variants of small wind turbine
        systems
Annex B (normative) - Design parameters for describing
        SWT class S
Annex C (informative) - Stochastic turbulence models
Annex D (informative) - Deterministic turbulence description
Annex E (informative) - Partial safety factors for materials
Annex F (informative) - Development of the simplified loads
        methodology
Annex G (informative) - Example of test reporting formats
Annex H (informative) - EMC measurements
Annex I (normative) - Natural frequency analysis
Annex J (informative) - Extreme environmental conditions
Annex K (informative) - Extreme wind conditions of tropical
        cyclones
Annex L (informative) - Other wind conditions
Annex M (informative) - Consumer label
Bibliography

IEC 61400-2:2013 deals with safety philosophy, quality assurance, and engineering integrity and specifies requirements for the safety of small wind turbines (SWTs) including design, installation, maintenance and operation under specified external conditions. It provides the appropriate level of protection against damage from hazards from these systems during their planned lifetime. This standard is concerned with all subsystems of SWTs such as protection mechanisms, internal electrical systems, mechanical systems, support structures, foundations and the electrical interconnection with the load. While this standard is similar to IEC 61400-1, it does simplify and make significant changes in order to be applicable to small wind turbines. The main changes with respect to the previous edition are as follows:
- the title has been modified to better reflect the scope;
- restructured into a part Design evaluation and a part Type testing to harmonise use with IEC 61400-22 conformity testing and certification;
- caution provided regarding the use of simplified equations;
- added various annexes (wind conditions, tropical storms, extreme environmental conditions, EMC testing, dynamic behavior, etc.).
The contents of the corrigendum of October 2019 have been included in this copy.