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  • IEC 61400-11:2012

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Wind turbines - Part 11: Acoustic noise measurement techniques

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  10-06-2019

    Language(s):  Spanish, Castilian, English - French

    Published date:  07-11-2012

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols and units
    5 Outline of method
    6 Instrumentation
    7 Acoustic measurements and measurement procedures
    8 Non-acoustic measurements
    9 Data reduction procedures
    10 Information to be reported
    Annex A (informative) - Other possible characteristics of
            wind turbine noise emission and their
            quantification
    Annex B (informative) - Assessment of turbulence intensity
    Annex C (informative) - Assessment of measurement uncertainty
    Annex D (informative) - Apparent roughness length
    Annex E (informative) - Characterization of a secondary wind
            screen
    Annex F (normative) - Small wind turbines
    Annex G (informative) - Air absorption
    Bibliography

    Abstract - (Show below) - (Hide below)

    IEC 61400-11:2012 presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission assessment at locations close to the machine, in order to avoid errors due to sound propagation, but far away enough to allow for the finite source size. The procedures described are different in some respects from those that would be adopted for noise assessment in community noise studies. They are intended to facilitate characterisation of wind turbine noise with respect to a range of wind speeds and directions. Standardisation of measurement procedures will also facilitate comparisons between different wind turbines. This new edition constitutes a technical revision, introducing new principles for data reduction procedures.

    General Product Information - (Show below) - (Hide below)

    Committee TC 88
    Development Note Stability Date: 2017. (09/2017)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    PD CLC/TS 61400-14:2017 Wind turbines Declaration of apparent sound power level and tonality values
    CEI EN 61400-22 : 2011 WIND TURBINES - PART 22: CONFORMITY TESTING AND CERTIFICATION
    ANSI/ASA S12.9 PART 7 : 2016 QUANTITIES AND PROCEDURES FOR DESCRIPTION AND MEASUREMENT OF ENVIRONMENTAL SOUND - PART 7: MEASUREMENT OF LOW-FREQUENCY NOISE AND INFRASOUND OUTDOORS AND IN THE PRESENCE OF WIND AND INDOORS IN OCCUPIED SPACES
    EN 61400-2:2014 Wind turbines - Part 2: Small wind turbines
    DIN ISO 5129:2014-11 Acoustics - Measurement of sound pressure levels in the interior of aircraft during flight (ISO 5129:2001 + Amd.1:2013)
    UFC 3-540-08 : 2017 UNIFIED FACILITIES CRITERIA - UTILITY-SCALE RENEWABLE ENERGY SYSTEMS
    12/30248232 DC : DRAFT AUG 2012 BS EN 61400-2 - WIND TURBINES - PART 2: SMALL WIND TURBINES
    11/30148668 DC : 0 IEC 61400-12-2 - WIND TURBINES - PART 12-2: POWER PERFORMANCE OF ELECTRICITY PRODUCING WIND TURBINES BASED ON NACELLE ANEMOMETRY
    CEI EN 50308 : 2005 WIND TURBINES - PROTECTIVE MEASURES - REQUIREMENTS FOR DESIGN, OPERATION AND MAINTENANCE
    ISO 5129:2001 Acoustics — Measurement of sound pressure levels in the interior of aircraft during flight
    IEC 61400-2:2013 Wind turbines - Part 2: Small wind turbines
    BS EN 50308:2004 Wind turbines. Protective measures. Requirements for design, operation and maintenance
    PD IEC WT 01:2001 IEC system for conformity testing and certification of wind turbines. Rules and procedures
    UNE-EN 61400-2:2015 Wind turbines - Part 2: Small wind turbines
    S.R. CLC/TS 61400-14:2017 WIND TURBINES - PART 14: DECLARATION OF APPARENT SOUND POWER LEVEL AND TONALITY VALUES
    I.S. EN 50308:2005 WIND TURBINES - PROTECTIVE MEASURES - REQUIREMENTS FOR DESIGN, OPERATION AND MAINTENANCE
    I.S. EN 61400-2:2014 WIND TURBINES - PART 2: SMALL WIND TURBINES
    UNE-EN 61400-22:2011 Wind turbines - Part 22: Conformity testing and certification
    DD IEC TS 61400-14 : 2005 WIND TURBINES - PART 14: DECLARATION OF APPARENT SOUND POWER LEVEL AND TONALITY VALUES
    02/206912 DC : DRAFT MAY 2002 IEC 61400-14 TS. ED.1 - WIND TURBINE GENERATOR SYSTEMS - DECLARATION OF SOUND POWER LEVEL AND TONALITY VALUES
    BS ISO 5129 : 2001 ACOUSTICS - MEASUREMENT OF SOUND PRESSURE LEVELS IN THE INTERIOR OF AIRCRAFT DURING FLIGHT
    CLC/TS 61400-14:2017 Wind turbines - Part 14: Declaration of apparent sound power level and tonality values
    EN 61400-22:2011 Wind turbines - Part 22: Conformity testing and certification
    NF EN 50308 : 2004 WIND TURBINES - PROTECTIVE MEASURES - REQUIREMENTS FOR DESIGN, OPERATION AND MAINTENANCE
    DIN ISO 5129 E : 2014 ACOUSTICS - MEASUREMENT OF SOUND PRESSURE LEVELS IN THE INTERIOR OF AIRCRAFT DURING FLIGHT (ISO 5129:2001 + AMD.1:2013)
    NF EN 61400-22:2011 WIND TURBINES - PART 22: CONFORMITY TESTING AND CERTIFICATION
    IEEE 2400-2016 IEEE Standard for Wind Turbine Aero Acoustic Noise Measurement Techniques
    IEC TS 61400-14:2005 Wind turbines - Part 14: Declaration of apparent sound power level and tonality values
    I.S. EN 61400-22:2011 WIND TURBINES - PART 22: CONFORMITY TESTING AND CERTIFICATION
    IEC WT 01:2001 IEC System for Conformity Testing and Certification of Wind Turbines - Rules and procedures
    ISO/TS 7849-2:2009 Acoustics — Determination of airborne sound power levels emitted by machinery using vibration measurement — Part 2: Engineering method including determination of the adequate radiation factor
    IEC 61400-22:2010 Wind turbines - Part 22: Conformity testing and certification
    EN 50308 : 2004 COR 2005 WIND TURBINES - PROTECTIVE MEASURES - REQUIREMENTS FOR DESIGN, OPERATION AND MAINTENANCE

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 7196:1995 Acoustics — Frequency-weighting characteristic for infrasound measurements
    IEC 61400-12-1:2017 Wind energy generation systems - Part 12-1: Power performance measurements of electricity producing wind turbines
    IEC 60942:2003 Electroacoustics - Sound calibrators
    IEC 60688:2012 Electrical measuring transducers for converting A.C. and D.C. electrical quantities to analogue or digital signals
    ISO 9613-1:1993 Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
    IEC TS 61400-14:2005 Wind turbines - Part 14: Declaration of apparent sound power level and tonality values
    IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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