EN 61400-11:2003/A1:2006

Wind turbine generator systems - Part 11: Acoustic noise measurement techniques

Windenergieanlagen - Teil 11: Schallmessverfahren

Aérogénérateurs - Partie 11: Techniques de mesure du bruit acoustique

Sistemi generatorjev za vetrne turbine - 11. del: Tehnike merjenja hrupa (IEC 61400-11:2002/A1:2006)

General Information

• Status: Withdrawn
• Publication Date: 22-Jun-2006
• Withdrawal Date: 31-May-2009
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: CLC/TC 88 - Wind turbines
• Drafting Committee: IEC/TC 88 - IEC_TC_88
• Parallel Committee: IEC/TC 88 - IEC_TC_88
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 12-Dec-2015
• Completion Date: 12-Dec-2015
• Ref Project: SIST EN 61400-11:2003/A1:2006 - Wind turbine generator systems -- Part 11: Acoustic noise measurement techniques

Relations

• Replaced By: EN 61400-11:2013 - Wind turbines - Part 11: Acoustic noise measurement techniques
• Effective Date: 29-Jan-2023
• Amends: EN 61400-11:2003 - Wind turbine generator systems - Part 11: Acoustic noise measurement techniques
• Effective Date: 29-Jan-2023

Standards Content (Sample)

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EUROPEAN STANDARD
EN 61400-11/A1
NORME EUROPÉENNE
June 2006
EUROPÄISCHE NORM
ICS 27.180
English version
Wind turbine generator systems
Part 11: Acoustic noise measurement techniques
(IEC 61400-11:2002/A1:2006)
Aérogénérateurs  Windenergieanlagen
Partie 11: Techniques de mesure du bruit Teil 11: Schallmessverfahren
acoustique (IEC 61400-11:2002/A1:2006)
(CEI 61400-11:2002/A1:2006)
This amendment A1 modifies the European Standard EN 61400-11:2003; it was approved by CENELEC on
2006-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61400-11:2003/A1:2006 E

Foreword
The text of document 88/260/FDIS, future amendment 1 to IEC 61400-11:2002, prepared by IEC TC 88,
Wind turbines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
amendment A1 to EN 61400-11:2003 on 2006-06-01.
The following dates were fixed:
– latest date by which the amendment has to be
implemented at national level by publication of
an identical national standard or by endorsement (dop) 2007-03-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2009-06-01
__________
Endorsement notice
The text of amendment 1:2006 to the International Standard IEC 61400-11:2002 was approved by
CENELEC as an amendment to the European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61672-1 NOTE  Harmonized as EN 61672-1:2003 (not modified).

__________
INTERNATIONAL IEC
STANDARD 61400-11
AMENDMENT 1
2006-05
Amendment 1
Wind turbine generator systems –
Part 11:
Acoustic noise measurement techniques
 IEC 2006 Droits de reproduction réservés  Copyright - all rights reserved
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
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– 2 – 61400-11 Amend. 1  IEC:2006(E)
FOREWORD
This amendment has been prepared by IEC technical committee 88: Wind turbines.
The text of this amendment is based on the following documents:
FDIS Report on voting
88/260/FDIS 88/264/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
INTRODUCTION
This amendment to IEC 61400-11:2002 addresses special cases where 95 % of rated power
is reached below 10 m/s speed at 10 m height and for sites where wind speeds of 10 m/s at
10 m height are very rare. Furthermore a clarification on regression analysis and frequency
weighting is included.
Page 8
4 Symbols and units
Add the following new symbol:
V  wind speed measured by the nacelle anemometer (m/s)
n
Page 9
5 Outline of method
Insert, after the fifth paragraph, the following text:
If this part of IEC 61400 is used for verification that actual noise emission is in accordance
with a reference/declared noise level, the verification measurement shall be made in
accordance with the present standard for a wind speed range given by:
– Annual average wind speed at 10 m height onsite ±1 m/s as a minimum. As a minimum,
three integer w
...