IEC 60034-2-2-2010 Rotating electrical machines - Part.2-2 Specific methods for determining separate losses of large machines from tests - Supplement to IEC 600.pdf

1、 IEC 60034-2-2 Edition 1.0 2010-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Rotating electrical machines Part 2-2: Specific methods for determining separate losses of large machines from tests Supplement to IEC 60034-2-1 Machines lectriques tournantes Partie 2-2: Mthodes spcifiques pour dterminer

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16、us donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60034-2-2 Edition 1.0 2010-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Rotating electrical machines

17、 Part 2-2: Specific methods for determining separate losses of large machines from tests Supplement to IEC 60034-2-1 Machines lectriques tournantes Partie 2-2: Mthodes spcifiques pour dterminer les pertes spares des machines de grande taille partir dessais Complment la CEI 60034-2-1 INTERNATIONAL EL

18、ECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 29.160 PRICE CODE CODE PRIX ISBN 2-8318-1083-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60034-2-2 IEC:2010 CONTENTS FOREWORD.3 1 Sco

19、pe.5 2 Normative references .5 3 Terms and definitions .5 4 Symbols .6 4.1 Quantities6 4.2 Subscripts .6 5 Basic requirements.7 5.1 Direct and indirect efficiency determination .7 5.1.1 Direct 7 5.1.2 Indirect 7 5.2 Uncertainty7 5.3 Preferred methods.7 6 Common determinations.8 6.1 Efficiency 8 6.2

20、Total loss 8 6.3 Load losses.9 7 Methods .9 7.1 Calibrated machine method.10 7.1.1 General .10 7.1.2 Machine calibration .10 7.1.3 Test procedure 10 7.1.4 Determination of performance11 7.2 Retardation method.12 7.2.1 Fundamentals12 7.2.2 Test procedure 12 7.2.3 Determination of deceleration14 7.2.4

21、 Determination of retardation constant 15 7.2.5 Determination of losses .16 7.3 Calorimetric method 17 7.3.1 General .17 7.3.2 Calorimetric instrumentation 19 7.3.3 Test procedure 22 7.3.4 Determination of losses .22 Figure 1 Method of the chord .15 Figure 2 Reference surface18 Figure 3 Four coolers

22、 connected in parallel, single calorimeter, single coolant.20 Figure 4 Series connected coolers, two coolants20 Figure 5 Bypass piping 21 Figure 6 Parallel piping21 Figure 7 Characteristics of pure water as a function of temperature .23 Table 1 Preferred methods for large machines.8 60034-2-2 IEC:20

23、10 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ROTATING ELECTRICAL MACHINES Part 2-2: Specific methods for determining separate losses of large machines from tests Supplement to IEC 60034-2-1 FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardiz

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33、n to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not

34、be held responsible for identifying any or all such patent rights. International Standard IEC 60034-2-2 has been prepared by IEC technical committee 2: Rotating machinery. The text of this standard is based on the following documents: FDIS Report on voting 2/1585/FDIS 2/1595/RVD Full information on

35、the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 4 60034-2-2 IEC:2010 NOTE A table of cross-references of all IEC TC 2 publications can be found in the

36、IEC TC 2 dashboard on the IEC website. The committee has decided that the contents of this amendment and the base publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the

37、publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60034-2-2 IEC:2010 5 ROTATING ELECTRICAL MACHINES Part 2-2: Specific methods for determining separate losses of large machines from tests Supplement to IEC 60034-2-1 1 Scope This part of IEC 60034 applies to large

38、 rotating electrical machines and establishes additional methods of determining separate losses and to define an efficiency supplementing IEC 60034-2-1. These methods apply when full-load testing is not practical and result in a greater uncertainty. NOTE In situ testing according to the calorimetric

39、 method for full-load conditions is recognized. The specific methods described are: Calibrated-machine method. Retardation method. Calorimetric method. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edi

40、tion cited applies. 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 60034-2-1, Rotating electrical machines Part 2-1: Standard methods for determining losses and eff

41、iciency from tests (excluding machines for traction vehicles) 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60034-1 and IEC 60034-2-1 apply, as well as the following. 3.1 calibrated machine machine whose mechanical power input/output is determined,

42、 with low uncertainty, using measured electrical output/input values according to a defined test procedure 3.2 calibrated-machine method method in which the mechanical input/output to/from an electrical machine under test is determined from the measurement of the electrical input/output of a calibra

43、ted machine mechanically coupled to the test machine 3.3 retardation method method in which the separate losses in a machine under test are deduced from the measurements of the deceleration rate of its rotating components when only these losses are present 6 60034-2-2 IEC:2010 3.4 calorimetric metho

44、d method in which the losses in a machine are deduced from the measurements of the heat generated by them 3.5 thermal equilibrium the state reached when the temperature rises of the several parts of the machine do not vary by more than a gradient of 2 K per hour IEV 411-51-08 4 Symbols In addition t

45、o the symbols in IEC 60034-2-1, the following apply. 4.1 Quantities A is an area, m 2 , C is the retardation constant, kg m 2min 2 , c pis the specific heat capacity of the cooling medium, J/(kg K), h is the coefficient of heat transfer, W/(m 2K), J is the moment of inertia, kg m 2 , n is the speed,

46、 min 1 , P 1E is the excitation power supplied by a separate source, W, P kis the constant loss, W, P elis the electrical power, excluding excitation, W, P eis the excitation power, W, P Feis the iron loss, W, P fwis the friction and windage loss, W, P scis the short-circuit loss, W, P mechis the me

47、chanical power, W, P Tis the total loss, W, Q is the volume rate of flow of the cooling medium, m 3 /s, t is the time, s, v is the exit velocity of cooling medium, m/s, p is the difference between the static pressure in the intake nozzle and ambient pressure, N/m 2 , is the temperature rise of the c

48、ooling medium, or the temperature difference between the machine reference surface and the external ambient temperature, K, is the per unit deviation of rotational speed from rated speed, is the density of the cooling medium, kg/m 3 , is the temperature, C. 4.2 Subscripts irs for inside reference su

49、rface, ers for outside reference surface, E for exciter, c for the cooling circuit, 60034-2-2 IEC:2010 7 N for rated values, rs for the reference surface, t for a test procedure, 1 for input or initial condition, 2 for output condition. 5 Basic requirements 5.1 Direct and indirect efficiency determination Tests can be grouped in the following categories.