EN 61400-13:2016

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, units and abbreviations
5 General
6 Test requirements
7 Instrumentation
8 Determination of calibration factors
9 Data verification
10 Processing of measured data
11 Uncertainty estimation
12 Reporting
Annex A (informative) - Example co-ordinate systems
Annex B (informative) - Procedure for the evaluation of
        uncertainties in load measurements on wind turbines
Annex C (informative) - Sample presentation of
        mechanical load measurements and analysis
Annex D (informative) - Recommendations for offshore
        measurements
Annex E (informative) - Load model validation
Annex F (informative) - Methods for identification of
        wind speed trends
Annex G (informative) - Data acquisition considerations
Annex H (informative) - Load calibration
Annex I (informative) - Temperature drift
Annex J (informative) - Mechanical load measurements
        on vertical axis wind turbines
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 61400-13:2015(B) describes the measurement of fundamental structural loads on wind turbines for the purpose of the load simulation model validation. The standard prescribes the requirements and recommendations for site selection, signal selection, data acquisition, calibration, data verification, measurement load cases, capture matrix, post-processing, uncertainty determination and reporting. Informative annexes are also provided to improve understanding of testing methods. This standard replaces IEC TS 61400-13 published in 2001; it constitutes a technical revision and transition from technical specification to International Standard.