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1、BRITISH STANDARD BS EN 60034-9:2005 Rotating electrical machines Part 9: Noise limits The European Standard EN 60034-9:2005 has the status of a British Standard ICS 29.160 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60034-9:2005
2、This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2005 BSI 31 October 2005 ISBN 0 580 46510 1 National foreword This British Standard is the official English language version of EN 60034-9:2005. It was derived by CENELEC from IEC 600
3、34-9:2003. It supersedes BS EN 60034-9:1998 which will be withdrawn on 1 March 2008. The CENELEC common modifications have been implemented at the appropriate places in the text and are indicated by tags (e.g. ). The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rot
4、ating electrical machinery, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in t
5、he BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible
6、 for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK inte
7、rests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this do
8、cument indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 60034-9 NORME EUROPENNE EUROPISCHE NORM May 2005 CENELEC Europ
9、ean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for
10、 CENELEC members. Ref. No. EN 60034-9:2005 E ICS 29.160 Supersedes EN 60034-9:1997 English version Rotating electrical machines Part 9: Noise limits (IEC 60034-9:2003, modified) Machines lectriques tournantes Partie 9: Limites de bruit (CEI 60034-9:2003, modifie) Drehende elektrische Maschinen Teil
11、9: Geruschgrenzwerte (IEC 60034-9:2003, modifiziert) This European Standard was approved by CENELEC on 2005-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without
12、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 European Standard exists in three official versions (English, French, German). A version in any other language m
13、ade 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, Czech Republic, Denmark, Estonia, Finl
14、and, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontrolled
15、 Copy, (c) BSI Foreword The text of the International Standard IEC 60034-9:2003, prepared by IEC TC 2, Rotating machinery, together with the common modifications prepared by the Technical Committee CENELEC TC 2, Rotating machinery, was submitted to the formal vote and was approved by CENELEC as EN 6
16、0034-9 on 2005-03-01. This European Standard supersedes EN 60034-9:1997. It includes the following significant technical changes: it reduces the no-load noise limits for single-speed, cage-induction motors according to Table 2; it provides informative guidance on the measurement surface to be used d
17、uring some tests, a method for the determination of an average sound pressure level, an indication of “uncertainty“ based upon the category of test procedure. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national s
18、tandard or by endorsement (dop) 2006-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60034-9:2003 was approved by CENELEC as a European
19、Standard with agreed common modifications. 2 EN 60034-9:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 CONTENTS INTRODUCTION 4 1Scope . 5 2Normative references 6 3Terms and definitions . 7 4Methods of measurement 7 5Test conditions .
20、 8 5.1Machine mounting . 8 5.1.1Precautions 8 5.1.2Resilient mounting . 8 5.1.3Rigid mounting. 8 5.2Test operating conditions. 8 6Sound power level limits . 9 7Determination of sound pressure level 9 8Declaration and verification of sound power values.10 Annex ZA (normative) Normative references to
21、international publications with their corresponding European publications Table 1 Maximum A-weighted sound power level, LWA in dB, at no-load (excluding motors according to Table 2)11 Table 2 Maximum A-weighted sound power level, LWA in dB, at no-load (for single speed three-phase cage induction mot
22、ors IC01, IC11, IC21, IC411, IC511, IC611) .12 Table 3 Maximum expected increase, over no-load condition, in A-weighted sound power levels, LWA in dB, for rated load condition (for motors according to Table 2).12 . .13 EN 60034-9:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 G
23、MT+00:00 2006, Uncontrolled Copy, (c) BSI 4 INTRODUCTION Acoustic quantities can be expressed in sound pressure terms or sound power terms. The use of a sound power level, which can be specified independently of the measurement surface and environmental conditions, avoids the complications associate
24、d with sound pressure levels, which require additional data to be specified. Sound power levels provide a measure of radiated energy and have advantages in acoustic analysis and design. EN 60034-9:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontrolled Copy,
25、 (c) BSI 5 ROTATING ELECTRICAL MACHINES Part 9: Noise limits 1 Scope This part of IEC 60034: specifies test methods for the determination of sound power level of rotating electrical machines; specifies maximum A-weighted sound power levels for factory acceptance testing of rotating electrical machin
26、es in accordance with IEC 60034-1, having methods of cooling according to IEC 60034-6 and degrees of protection according to IEC 60034-5, and having the following characteristics: standard design, either a.c. or d.c., without additional special electrical, mechanical, or acoustical modifications int
27、ended to reduce the sound power level; rated output from 1 kW (or kVA) up to and including 5 500 kW (or kVA); speed not greater than 3 750 min1. Excluded are a.c. motors supplied by converters. For these conditions see IEC 60034-17 for guidance. The object of this standard is to determine maximum A-
28、weighted sound power levels, LWA in decibels, dB, for airborne noise emitted by rotating electrical machines of standard design, as a function of power, speed and load, and to specify the method of measurement and the test conditions appropriate for the determination of the sound power level of the
29、machines to provide a standardized evaluation of machine noise up to the maximum specified sound power levels. This standard does not provide correction for the existence of tonal characteristics. Sound pressure levels at a distance from the machine may be required in some applications, such as hear
30、ing protection programs. Information is provided on such a procedure in Clause 7 based on a standardized test environment. NOTE 1 This standard recognizes the economic reason for the availability of standard noise-level machines for use in non-critical areas or for use with supplementary means of no
31、ise attenuation. NOTE 2 Where sound power levels lower than those specified in Tables 1 or 2 are required, these should be agreed between the manufacturer and the purchaser, as special electrical, mechanical, or acoustical design may involve additional measures. EN 60034-9:2005 Licensed Copy: sheffi
32、eldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition o
33、f the referenced document (including any amendments) applies. IEC 60034-1, Rotating electrical machines Part 1: Rating and performance IEC 60034-5, Rotating electrical machines Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) Classification IEC
34、60034-6, Rotating electrical machines Part 6: Methods of cooling (IC Code) IEC 60034-17, Rotating electrical machines Part 17: Cage induction motors when fed from convertors Application guide ISO 3741, Acoustics Determination of sound power levels of noise sources using sound pressure Precision meth
35、ods for reverberation rooms ISO 3743-1, Acoustics Determination of sound power levels of noise sources Engineering methods for small, movable sources in reverberant fields Part 1: Comparison method for hard-walled test rooms ISO 3743-2, Acoustics Determination of sound power levels of noise sources
36、using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Method for special reverberation test rooms ISO 3744: Acoustics Determination of sound power levels of noise sources using sound pressure Engineering method in an essentially free field over a reflectin
37、g plane ISO 3745, Acoustics Determination of sound power levels of noise sources Precision methods for anechoic and semi-anechoic rooms ISO 3746, Acoustics Determination of sound power levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflectin
38、g plane ISO 3747, Acoustics Determination of sound power levels of noise sources using sound pressure Comparison method in situ ISO 4871, Acoustics Declaration and verification of noise emission values of machinery and equipment ISO 9614-1, Acoustics Determination of sound power levels of noise sour
39、ces using sound intensity Part 1: Measurement at discrete points ISO 9614-2, Acoustics Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanning EN 60034-9:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2006, Uncontroll
40、ed Copy, (c) BSI 7 3 Terms and definitions For the purposes of this document, the terms and definitions given in the standards listed in the normative references together with the following apply. 3.1 sound power level LW ten times the logarithm to the base 10 of the ratio of the sound power radiate
41、d by the source under test to the reference sound power Wo = 1 pW (1012 W) expressed in decibels 3.2 sound pressure level Lp ten times the logarithm to the base 10 of the ratio of the square of the sound pressure to the square of the reference sound pressure Po = 20 Pa (2 105 Pa) expressed in decibe
42、ls 4 Methods of measurement 4.1 Sound pressure level measurements and calculation of sound power level produced by the machine shall be made in accordance with ISO 3744, unless one of the alternative methods specified in 4.3 or 4.4 below applies. 4.2 The maximum sound power levels specified in Table
43、s 1 and 2 or adjusted by Table 3, relate to measurements made in accordance with 4.1. 4.3 When appropriate, one of the methods of precision or engineering grade accuracy, such as the methods of ISO 3741, ISO 3743-1, ISO 3743-2, ISO 3745, ISO 9614-1 or ISO 9614-2, may be used to determine sound power
44、 levels. 4.4 The simpler but less accurate method specified in ISO 3746 or ISO 3747 may be used, especially when the environmental conditions required by ISO 3744 cannot be satisfied (for example, for large machines). However, to prove compliance with this standard, unless a correction due to inaccu
45、racy of the measurement has already been applied to the values determined by this method in accordance with ISO 3746 or ISO 3747, the levels of Tables 1 and 2 shall be decreased by 2 dB. 4.5 If testing under rated load conditions, the methods of ISO 9614 are preferred. However, other methods are all
46、owed when the load machine and auxiliary equipment are acoustically isolated or located outside the test environment. NOTE It is recommended that the parallelepiped method be used for all electrical machines. EN 60034-9:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:42:46 GMT+00:00 2
47、006, Uncontrolled Copy, (c) BSI 8 5 Test conditions 5.1 Machine mounting 5.1.1 Precautions Care should be taken to minimize the transmission and the radiation of structure-borne noise from all mounting elements including the foundation. This can be achieved by the resilient mounting for smaller mach
48、ines, however, larger machines can usually only be tested under rigid mounting conditions. Machines tested under load conditions shall be rigidly mounted. 5.1.2 Resilient mounting The natural frequency of the support system and the machine under test shall be lower than a quarter of the frequency co
49、rresponding to the lowest rotational speed of the machine. The effective mass of the resilient support shall be not greater than one-tenth of that of the machine under test. 5.1.3 Rigid mounting The machines shall be rigidly mounted to a surface with dimensions adequate for the machine type (for example by foot or flange fixed in accordance with the manufacturers instru