EN 60034-14-2004 en Rotating electrical machines Part 14 Mechanical vibration of certain machines with shaft heights 56 mm and higher C Measurement evaluation and limits of vibrati.pdf

1、BRITISH STANDARDBS EN 60034-14:2004Incorporating amendments nos. 1 and 2Rotating electrical machines Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher Measurement, evaluation and limits of vibration severityThe European Standard EN 60034-14:2004, incorporating ame

2、ndment A1:2007, has the status of a British StandardICS 29.160g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60034-14:2004This British Standa

3、rd was published under the authority of the Standards Policy and Strategy Committee on 2 November 2004 BSI 2007ISBN 978 0 580 60129 3National forewordThis British Standard is the UK implementation of EN 60034-14:2004, incorporating amendment A1:2007. It is identical with IEC 60034-14:2003, incorpora

4、ting amendment 1:2007. It supersedes BS EN 60034-14:1998 and BS 4999-142:1987 which are withdrawn. 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

5、 by IEC amendment 1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rotating electrical machines.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all t

6、he necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments15777 February 2006 Revision to supersession details17348 28 September 20

7、07 See national forewordEUROPEAN STANDARD EN 60034-14 NORME EUROPENNE EUROPISCHE NORM February 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35

8、, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60034-14:2004 E ICS 29.160 Supersedes EN 60034-14:1996English version Rotating electrical machines Part 14: Mechanical vibration of certain machines with sha

9、ft heights 56 mm and higher Measurement, evaluation and limits of vibration severity (IEC 60034-14:2003) Machines lectriques tournantes Partie 14: Vibrations mcaniques de certaines machines de hauteur daxe suprieure ou gale 56 mm Mesurage, valuation et limites de lintensit vibratoire (CEI 60034-14:2

10、003) Drehende elektrische Maschinen Teil 14: Mechanische Schwingungen von bestimmten Maschinen mit einer Achshhe von 56 mm und hher - Messung, Bewertung und Grenzwerte der Schwingstrke (IEC 60034-14:2003) This European Standard was approved by CENELEC on 2003-12-01. CENELEC members are bound to comp

11、ly with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this 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 Sec

12、retariat or to any CENELEC member. This European Standard 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

13、 the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovaki

14、a, Slovenia, Spain, Sweden, Switzerland and United Kingdom. + A1 June 2007 Foreword The text of document 2/1257/FDIS, future edition 3 of IEC 60034-14, prepared by IEC TC 2, Rotating machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60034-14 on 2003-12-01. T

15、his European Standard supersedes EN 60034-14:1996. The significant technical changes with respect to the previous edition are: a) reduced vibration levels of new machines during factory acceptance tests; the new levels are based on a combination of displacement, velocity and acceleration rather than

16、 only velocity; b) the speed range is extended; c) the number of shaft-height ranges is reduced; d) a procedure for testing vertical motors has been introduced. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national

17、 standard or by endorsement (dop) 2004-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60034-14:2003 was approved by CENELEC as a Europe

18、an Standard without any modification. Page 2EN 6003414:2004Foreword to amendment A1 The text of document 2/1416/FDIS, future amendment 1 to IEC 60034-14:2003, prepared byIEC TC 2, Rotating machinery, was submitted to the IEC-CENELEC parallel vote and was approvedby CENELEC as amendment A1 to EN 6003

19、4-14:2004 on 2007-06-01. 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) 2008-03-01 latest date by which the national standards conflicting with the amendment have to b

20、e withdrawn (dow) 2010-06-01 _ Endorsement notice The text of amendment 1:2007 to the International Standard IEC 60034-14:2003 was approved byCENELEC as an amendment to the European Standard without any modification. _ _ CONTENTS 1 Scope.4 2 Normative references .4 3 Terms and definitions .4 4 Measu

21、rement quantities .5 4.1 General .5 4.2 Vibration magnitude 5 4.3 Relative shaft vibration5 5 Measurement equipment 5 6 Machine mounting 5 6.1 General .5 6.2 Free suspension5 6.3 Rigid mounting 6 6.4 Active environment determination6 7 Conditions of measurement 7 7.1 Key .7 7.2 Measurement positions

22、 .7 7.3 Test conditions7 7.4 Vibration transducer 7 8 Limits of bearing housing vibration .8 8.1 Limits of vibration magnitude.8 8.2 Limits of vibration velocity with twice-line frequency for a.c. machines 8 8.3 Axial vibration .9 9 Limits of relative shaft vibration 9 Annex ZA (normative) Normative

23、 references to international publications with their corresponding European publications .14 Bibliography15 Figure 1 Minimum elastic displacement as a function of nominal speed .10 Figure 2 Preferred positions of measurement applicable to one or both ends of the machine11 Figure 3 Measurement positi

24、ons for those ends of machines where measurements according to figure 2 are not possible without disassembly of parts 11 Figure 4 Measurement positions for pedestal bearing 12 Figure 5 Preferred circumferential position of transducers for the measurement of relative shaft displacement .12 Figure 6 M

25、easurement positions for vertical machines (measurements to be made at the bearing housing; when not accessible, then as close as possible).13 Table 1 Limits of maximum vibration magnitude in displacement, velocity and acceleration (r.m.s.) for shaft height H 8 Table 2 Limits for the maximum shaft v

26、ibration (Sp-p) and the maximum run-out.9 Page 3EN 6003414:2004ROTATING ELECTRICAL MACHINES Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher Measurement, evaluation and limits of vibration severity 1 Scope This part of IEC 60034 specifies the factory acceptance v

27、ibration test procedures and vibration limits for certain electrical machines under specified conditions, when uncoupled from any load or prime mover. It is applicable to d.c. and three-phase a.c. machines, with shaft heights 56 mm and higher and a rated output up to 50 MW, at operational speeds fro

28、m 120 min1 up to and including 15 000 min1. This standard is not applicable to machines mounted in situ, three-phase commutator motors, single-phase machines, three-phase machines operated on single-phase systems, vertical waterpower generators, turbine generators greater than 20 MW and machines wit

29、h magnetic bearings or series-wound machines. NOTE For machines measured in situ refer to applicable parts of ISO 10816 and ISO 7919. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies

30、. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60034-1, Rotating electrical machines Part 1: Rating and performance IEC 60034-7, Rotating electrical machines Part 7: Classification of types of construction, mounting arrangements and te

31、rminal box position (IM Code) ISO 2954, Mechanical vibration of rotating and reciprocating machinery Requirements for instruments for measuring vibration severity ISO 7919-1, Mechanical vibration of non-reciprocating machines Measurements on rotating shafts and evaluation criteria Part 1: General gu

32、idelines ISO 8821, Mechanical vibration Balancing Shaft and fitment key convention ISO 10817-1, Rotating shaft vibration measuring systems Part 1: Relative and absolute sensing of radial vibration from rotating shafts3 Terms and definitions For the purposes of this document, the terms and defintions

33、 given in the normative references listed in Clause 2 apply. Page 4EN 6003414:20044 Measurement quantities 4.1 General Measurement quantities are the vibration displacement, vibration velocity and vibration acceleration at the machine bearings and the relative shaft vibration displacement within or

34、near to the machine bearings. 4.2 Vibration magnitude The criterion for the vibration magnitude at the machine bearings shall be the broadband r.m.s. value of the vibration displacement in micrometres, the vibration velocity in millimetres per second and the vibration acceleration in meters per seco

35、nd squared in the frequency range specified in Clause 5. The greatest value, determined at the prescribed measurement positions, according to this standard, characterizes the vibration magnitude of the machine. Induction motors (especially of two pole type) frequently show vibration beating at twice

36、 slip frequency. In these cases, the decisive vibration magnitude shall be determined from the relationship: 222minmaxr.m.s.xxx+= where xmaxis the maximum r.m.s. value of vibration velocity, displacement or acceleration; xminis the minimum r.m.s. value of vibration velocity, displacement or accelera

37、tion. 4.3 Relative shaft vibration The criterion adopted for the relative shaft vibration shall be the vibratory displacement Sp-pin the direction of measurement from ISO 7919-1. 5 Measurement equipment The measurement equipment shall be capable of measuring broadband r.m.s. vibration with flat resp

38、onse over a frequency range of at least 10 Hz to 1 000 Hz, in accordance with the requirements of ISO 2954. However, for machines with speeds approaching or below 600 min1, the lower limit of the flat response frequency range shall not be greater than 2 Hz. Measurement equipment for relative shaft v

39、ibration measurements shall comply with the requirements in ISO 10817-1. 6 Machine mounting 6.1 General The vibration of an electrical machine is closely linked with the mounting of the machine. To permit evaluation as far as balance and vibration of rotating electrical machines are concerned, it is

40、 necessary to measure the vibration on the machine alone, under properly determined test conditions, to enable reproducible tests to be carried out and to provide comparable measurements. 6.2 Free suspension This condition is achieved by suspending the machine on a spring or by mounting on an elasti

41、c support (springs, rubber, etc.). Page 5EN 6003414:2004The natural oscillation frequency of the suspension system and machine, in the six possible degrees of freedom, shall be less than 1/3 of the frequency corresponding to the speed of the machine under test, as defined in 7.3. Based on the mass o

42、f the machine being tested, the necessary elasticity of the suspension system as a function of nominal speed from 600 min1to 3 600 min1 can be determined from Figure 1. For speeds lower than 600 min1measurements in free suspension are not practical. For greater speeds, the static displacement should

43、 be not less than the value for 3 600 min1. 6.3 Rigid mounting 6.3.1 General The maximum vibration velocity measured in the horizontal and vertical directions at the machine feet (or at the base frame near to the bearing pedestals or stator feet) shall not exceed 25 % of the maximum velocity, which

44、is measured at the adjacent bearing housing in the same measurement direction. NOTE 1 This requirement ensures that the horizontal and vertical natural frequencies of the complete test arrangement do not coincide within: a) 10 % of the rotational frequency of the machine; b) 5 % of twice the rotatio

45、nal frequency, or c) 5 % of once and twice the electrical line frequency, NOTE 2 The ratio of 25 % of foot to bearing vibration velocities is valid for once per revolution vibration and the vibration at twice the line frequency (if the latter is being evaluated). 6.3.2 Horizontal machines The machin

46、e under test shall be: clamped directly to a solid floor, or through its mounting base plate to a solid floor, or to a rigid plate that meets the requirements of 6.3.1. 6.3.3 Vertical machines Vertical machines shall be mounted onto a solid rectangular or circular steel plate with a bore hole in the

47、 centre of the shaft extension, a machined surface for the flange of electrical machine being measured and tapped holes for the flange bolts. The steel plate thickness shall be at least three times greater than the machine flange thickness, five times is preferable. The edge length respective to the

48、 diameter shall be at least equal to the height of the top bearing, L. Figure 6 is an example for IM V1 (see IEC 60034-7). The mounting base shall be clamped firmly and tilt safe to a solid floor and meet the requirements to 6.3.1. The flange connection shall use the correct number and diameter of f

49、asteners. 6.4 Active environment determination The support systems described in 6.2 and 6.3 are considered passive, admitting insignificant external disturbances to the machine. When, for the same measurement position, the vibration magnitude with the machine at standstill exceeds 25 % of the value when the machine is running, then an active environment is said to exist and this standard does not apply (see ISO 10816-1). Page 6EN 6003414:20047 Conditions of measur