FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
4.1 Symbols and units
4.2 Abbreviations
5 Principal elements
5.1 General
5.2 Design methods
5.3 Safety classes
5.4 Quality assurance
5.5 Wind turbine markings
6 External conditions
6.1 General
6.2 Wind turbine classes
6.3 Wind conditions
6.4 Other environmental conditions
6.5 Electrical power network conditions
7 Structural design
7.1 General
7.2 Design methodology
7.3 Loads
7.4 Design situations and load cases
7.5 Load calculations
7.6 Ultimate limit state analysis
8 Control and protection system
8.1 General
8.2 Control functions
8.3 Protection functions
8.4 Braking system
9 Mechanical systems
9.1 General
9.2 Errors of fitting
9.3 Hydraulic or pneumatic systems
9.4 Main gearbox
9.5 Yaw system
9.6 Pitch system
9.7 Protection function mechanical brakes
9.8 Rolling bearings
10 Electrical system
10.1 General
10.2 General requirements for the electrical system
10.3 Protective devices
10.4 Disconnect devices
10.5 Earth system
10.6 Lightning protection
10.7 Electrical cables
10.8 Self-excitation
10.9 Protection against lightning electromagnetic impulse
10.10 Power quality
10.11 Electromagnetic compatibility
11 Assessment of a wind turbine for site-specific conditions
11.1 General
11.2 Assessment of the topographical complexity of the site
11.3 Wind conditions required for assessment
11.4 Assessment of wake effects from neighbouring wind
turbines
11.5 Assessment of other environmental conditions
11.6 Assessment of earthquake conditions
11.7 Assessment of electrical network conditions
11.8 Assessment of soil conditions
11.9 Assessment of structural integrity by reference to
wind data
11.10 Assessment of structural integrity by load
calculations with reference to site specific
conditions
12 Assembly, installation and erection
12.1 General
12.2 Planning
12.3 Installation conditions
12.4 Site access
12.5 Environmental conditions
12.6 Documentation
12.7 Receiving, handling and storage
12.8 Foundation/anchor systems
12.9 Assembly of wind turbine
12.10 Erection of wind turbine
12.11 Fasteners and attachments
12.12 Cranes, hoists and lifting equipment
13 Commissioning, operation and maintenance
13.1 General
13.2 Design requirements for safe operation, inspection
and maintenance
13.3 Instructions concerning commissioning
13.4 Operator's instruction manual
13.5 Maintenance manual
Annex A (normative) Design parameters for describing wind
turbine class S
Annex B (informative) Turbulence models
Annex C (informative) Assessment of earthquake loading
Annex D (informative) Wake and wind farm turbulence
Annex E (informative) Prediction of wind distribution for
wind turbine sites by measure-correlate-predict (MCP)
methods
Annex F (informative) Statistical extrapolation of loads for
ultimate strength analysis
Annex G (informative) Fatigue analysis using Miner's rule
with load extrapolation
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Bibliography