1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58The European Standard EN 60034-9:2005, incorporating amendment A1:2007, has the status of a British
2、 StandardICS 29.160Rotating electrical machines Part 9: Noise limitsBRITISH STANDARDBS EN 60034-9:2005Incorporating amendment no. 1BS EN 60034-9:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2005 BSI 2007ISBN 978 0 580 59193
3、8The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rotating electrical machinery.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract
4、. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments17135 29 June 2007 See national forewordThe CENELEC common modifications have been implemented at the appropri
5、ate places in the text and are indicated by tags (e.g. ).National forewordThis British Standard is the official UK implementation of EN 60034-9:2005, incorporating amendment A1:2007. It is identical with IEC 60034-9:2003, incorporating amendment 1:2007. It supersedes BS EN 60034-9:1998 which will be
6、 withdrawn on 1 March 2008. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated in the text by !“.EUROPEAN STANDARD EN
7、 60034-9 NORME EUROPENNE EUROPISCHE NORM May 2005 CENELEC European 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 e
8、xploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60034-9:2005 E ICS 29.160 Supersedes EN 60034-9:1997English version Rotating electrical machines Part 9: Noise limits (IEC 60034-9:2003, modified) Machines lectriques tournantes Partie 9: Limites de bruit (C
9、EI 60034-9:2003, modifie) Drehende elektrische Maschinen Teil 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 thi
10、s European Standard 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 European Standard exists in three official version
11、s (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 Au
12、stria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. +A1April 2007 Foreword The tex
13、t 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 60034-9 on 2005-03-01. This Euro
14、pean 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 during some tests, a method for
15、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 standard or by endorsement (dop)
16、 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 Standard with agreed common mod
17、ifications. 2 EN 60034-9:2005_ Foreword to amendment 1The text of document 2/1383/CDV, future amendment 1 to IEC 60034-9:2003, prepared by IEC TC 2, Rotating machinery, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure and was approved by CENELEC as amendment A1 to EN 60034-9:200
18、5 on 2007-04-01. 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) 2008-01-01 latest date by which the national standards conflicting with the amendment have to be withdr
19、awn (dow) 2010-04-01 Endorsement notice The text of amendment 1:2007 to the International Standard IEC 60034-9:2003 was approved by CENELEC as an amendment to the European Standard without any modification. _ 3 CONTENTSINTRODUCTION 41 Scope . 52 Normative references 63 Terms and definitions . 74 Met
20、hods of measurement 75 Test conditions . 85.1 Machine mounting . 85.1.1 Precautions 85.1.2 Resilient mounting . 85.1.3 Rigid mounting. 85.2 Test operating conditions. 86 Sound power level limits . 98 Determination of sound pressure level 119 Declaration and verification of sound power values.12Annex
21、 ZA (normative) Normative references to international publications with their corresponding European publications Table 1 Maximum A-weighted sound power level, LWAin dB, at no-load(excluding motors according to Table 2)13Table 2 Maximum A-weighted sound power level, LWAin dB, at no-load (for singles
22、peed three-phase cage induction motors IC01, IC11, IC21, IC411, IC511, IC611) .14Table 3 Maximum expected increase, over no-load condition, in A-weighted soundpower levels, LWAin dB, for rated load condition (for motors according to Table 2).1415EN 60034-9:20057 Determination of noise increments cau
23、sed by converter supply . 9 4 INTRODUCTIONAcoustic quantities can be expressed in sound pressure terms or sound power terms. The useof a sound power level, which can be specified independently of the measurement surfaceand environmental conditions, avoids the complications associated with sound pres
24、surelevels, which require additional data to be specified. Sound power levels provide a measure ofradiated energy and have advantages in acoustic analysis and design.EN 60034-9:2005 5 ROTATING ELECTRICAL MACHINES Part 9: Noise limits1 ScopeExcluded are a.c. motors supplied by converters. For these c
25、onditions see IEC 60034-17for guidance.The object of this standard is to determine maximum A-weighted sound power levels, LWAindecibels, dB, for airborne noise emitted by rotating electrical machines of standard design, asa function of power, speed and load, and to specify the method of measurement
26、and the testconditions appropriate for the determination of the sound power level of the machines toprovide a standardized evaluation of machine noise up to the maximum specified soundpower levels. This standard does not provide correction for the existence of tonalcharacteristics.Sound pressure lev
27、els at a distance from the machine may be required in some applications,such as hearing protection programs. Information is provided on such a procedure in Clause 7based on a standardized test environment.NOTE 1 This standard recognizes the economic reason for the availability of standard noise-leve
28、l machines foruse in non-critical areas or for use with supplementary means of noise attenuation.NOTE 2 Where sound power levels lower than those specified in Tables 1 or 2 are required, these should beagreed between the manufacturer and the purchaser, as special electrical, mechanical, or acoustica
29、l design mayinvolve additional measures.EN 60034-9:2005!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 network-supplied, rotating electrical m
30、achines in accordance with lEC 60034-1, having methods of cooling according to lEC 60034-6 and degrees of protection according to lEC 60034-5, and having the following characteristics: standard design, either a.c. or d.c., without additional special electrical, mechanical, or acoustical modification
31、s intended to reduce the sound power level; rated output from 1 kW (or kVA) up to and including 5 500 kW (or kVA); rated speed not greater than 3 750 min1. provides guidance for the determination of noise levels for a.c. cage induction motors supplied by converters. “ 6 2 Normative referencesThe fol
32、lowing referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.IEC 60034-1, Rotating electrical machines Part 1: Rating an
33、d performanceIEC 60034-5, Rotating electrical machines Part 5: Degrees of protection provided by theintegral design of rotating electrical machines (IP code) ClassificationIEC 60034-6, Rotating electrical machines Part 6: Methods of cooling (IC Code)IEC 60034-17, Rotating electrical machines Part 17
34、: Cage induction motors when fed fromconvertors Application guideISO 3741, Acoustics Determination of sound power levels of noise sources using soundpressure Precision methods for reverberation roomsISO 3743-1, Acoustics Determination of sound power levels of noise sources Engineeringmethods for sma
35、ll, movable sources in reverberant fields Part 1: Comparison method forhard-walled test roomsISO 3743-2, Acoustics Determination of sound power levels of noise sources using soundpressure Engineering methods for small, movable sources in reverberant fields Part 2:Method for special reverberation tes
36、t roomsISO 3744: Acoustics Determination of sound power levels of noise sources using soundpressure Engineering method in an essentially free field over a reflecting planeISO 3745, Acoustics Determination of sound power levels of noise sources Precisionmethods for anechoic and semi-anechoic roomsISO
37、 3746, Acoustics Determination of sound power levels of noise sources using soundpressure Survey method using an enveloping measurement surface over a reflecting planeISO 3747, Acoustics Determination of sound power levels of noise sources using soundpressure Comparison method in situISO 4871, Acous
38、tics Declaration and verification of noise emission values of machinery andequipmentISO 9614-1, Acoustics Determination of sound power levels of noise sources using soundintensity Part 1: Measurement at discrete pointsISO 9614-2, Acoustics Determination of sound power levels of noise sources using s
39、oundintensity Part 2: Measurement by scanningEN 60034-9:2005 7 3 Terms and definitionsFor the purposes of this document, the terms and definitions given in the standards listed inthe normative references together with the following apply.3.1sound power levelLWten times the logarithm to the base 10 o
40、f the ratio of the sound power radiated by the sourceunder test to the reference sound power Wo= 1 pW (1012 W) expressed in decibels3.2sound pressure levelLpten times the logarithm to the base 10 of the ratio of the square of the sound pressure to thesquare of the reference sound pressure Po= 20 Pa
41、(2 105 Pa) expressed in decibels4 Methods of measurement4.1 Sound pressure level measurements and calculation of sound power level produced bythe machine shall be made in accordance with ISO 3744, unless one of the alternativemethods specified in 4.3 or 4.4 below applies.4.2 The maximum sound power
42、levels specified in Tables 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, suchas the methods of ISO 3741, ISO 3743-1, ISO 3743-2, ISO 3745, ISO 9614-1 or ISO 9614-2,may be used to
43、determine sound power 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 (forexample, for large machines).However, to prove compliance with this standard, unless a correct
44、ion due to inaccuracy of themeasurement has already been applied to the values determined by this method inaccordance with ISO 3746 or ISO 3747, the levels of Tables 1 and 2 shall be decreased by2 dB.4.5 If testing under rated load conditions, the methods of ISO 9614 are preferred. However,other met
45、hods are allowed when the load machine and auxiliary equipment are acousticallyisolated or located outside the test environment.NOTE It is recommended that the parallelepiped method be used for all electrical machines. EN 60034-9:2005 8 5 Test conditions5.1 Machine mounting5.1.1 PrecautionsCare shou
46、ld be taken to minimize the transmission and the radiation of structure-borne noisefrom all mounting elements including the foundation. This can be achieved by the resilientmounting for smaller machines, however, larger machines can usually only be tested underrigid mounting conditions.Machines test
47、ed under load conditions shall be rigidly mounted.5.1.2 Resilient mountingThe natural frequency of the support system and the machine under test shall be lower thana quarter of the frequency corresponding to the lowest rotational speed of the machine.The effective mass of the resilient support shall
48、 be not greater than one-tenth of that of themachine under test.5.1.3 Rigid mountingThe machines shall be rigidly mounted to a surface with dimensions adequate for the machinetype (for example by foot or flange fixed in accordance with the manufacturers instructions).The machine shall not be subject
49、 to additional mounting stresses from incorrect shimming orfasteners.5.2 Test operating conditionsThe following test conditions shall apply:a) The machine shall operate at rated voltage(s), rated frequency or rated speed(s) and withappropriate field current(s) (when applicable). These shall be measured with instrumentsof an accuracy of 1 % or better.1) The standard load condition shall be no-
