SN EN 61400-11 : 2003 AMD 1 2006
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
WIND TURBINE GENERATOR SYSTEMS - PART 11: ACOUSTIC NOISE MEASUREMENT TECHNIQUES
12-12-2015
01-12-2013
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Symbols and units
5 Outline of method
6 Instrumentation
6.1 Acoustic instruments
6.2 Non-acoustic Instruments
6.3 Traceable calibration
7 Measurements and measurement procedures
7.1 Measurement positions
7.2 Acoustic measurements
7.3 Non-acoustic measurements
8 Data reduction procedures
8.1 Wind speed
8.2 Correction for background noise
8.3 Apparent sound power levels
8.4 One-third octave band levels
8.5 Tonality
8.6 Directivity (optional)
9 Information to be reported
9.1 Characterisation of the wind turbine
9.2 Physical environment
9.3 Instrumentation
9.4 Acoustic data
9.5 Non-acoustic data
9.6 Uncertainty
Annex A (informative) Other possible characteristics of wind
turbine noise emission
and their quantification
Annex B (informative) Criteria for recording/playback equipment
Annex C (Informative) Assessment of turbulence intensity
Annex D (informative) Assessment of measurement uncertainty
Bibliography
Figures
Tables
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