DIN EN 61400-1 : 2011

INTRODUCTION
1 Scope and object
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 WTGS 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 Wind turbine control
   8.3 Wind turbine protection
   8.4 Functional requirements of the control and
         protection system
9 Mechanical systems
   9.1 General
   9.2 Errors of fitting
   9.3 Hydraulic or pneumatic systems
10 Electrical system
   10.1 General
   10.2 General requirements for the WTGS 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 Over-voltage protection
   10.10 Harmonics and power conditioning equipment
11 Assessment of external conditions
   11.1 General
   11.2 Assessment of wind conditions
   11.3 Assessment of other environmental conditions
   11.4 Assessment of electrical network conditions
   11.5 Assessment of soil 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 WTGS
   12.10 Erection of WTGS
   12.11 Fasteners and attachments
   12.12 Cranes, hoists and lifting equipment
3 Commissioning, operation and maintenance
   13.1 General
   13.2 Commissioning
   13.3 Operations
   13.4 Inspection and maintenance
Annex A (normative) Design parameters for describing
                      WTGS class S
Annex B (normative) Stochastic turbulence models
Annex ZA (normative) Normative references to international
         publications with their corresponding European publications
Bibliography