1、 IEC 60034-29Edition 1.0 2008-03INTERNATIONAL STANDARD NORME INTERNATIONALERotating electrical machines Part 29: Equivalent loading and superposition techniques Indirect testing to determine temperature rise Machines lectriques tournantes Partie 29: Techniques par charge quivalente et par superposit
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16、aires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: 11Hcsciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60034-29Edition 1.0 2008-03INTERNATIONAL STANDARD NORME INTERNATIONALERotating electrical machines Part 29: Equivalent l
17、oading and superposition techniques Indirect testing to determine temperature rise Machines lectriques tournantes Partie 29: Techniques par charge quivalente et par superposition Essais indirects pour dterminer lchauffement INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERN
18、ATIONALE UICS 29.160 PRICE CODECODE PRIXISBN 2-8318-9598-7 2 60034-29 IEC:2008 CONTENTS FOREWORD.0H3 INTRODUCTION.1H5 1 Scope.2H6 2 Normative references .3H6 3 Symbols and units 4H6 4 General test requirements 5H7 5 Superposition method.6H8 5.1 Basic principles .7H8 5.1.1 General .8H8 5.1.2 Temperat
19、ure rise .9H9 5.1.3 Estimation of temperature rise from reduced load tests .10H9 5.2 Induction motors 11H10 5.2.1 Applicable tests . 12H10 5.2.2 Method of reduced voltage and rated current. 13H10 5.2.3 Method of rated voltage and reduced current. 14H13 5.2.4 Method combining tests at reduced voltage
20、 and reduced current . 15H14 5.3 Synchronous machines . 16H14 5.3.1 Method of open circuit, short circuit, zero excitation 17H14 5.3.2 Method of zero power factor and open circuit loading 18H16 5.4 DC machines. 19H17 6 Equivalent load method 20H17 6.1 Principles 21H17 6.1.1 General . 22H17 6.1.2 Tem
21、perature rise . 23H18 6.2 Induction motors 24H18 6.2.1 Forward short-circuit test. 25H18 6.2.2 Modulated frequency method. 26H19 6.2.3 DC injection. 27H20 6.2.4 Mixed-frequency or bi-frequency method . 28H21 6.3 Synchronous machines Zero power factor 29H24 7 Preferred methods 30H26 Annex A (informat
22、ive) Example calculation 31H28 Figure 1 Graphical superposition method for induction motors . 32H12 Figure 2 Derivation of field winding temperature rise at rated load (synchronous machines). 33H16 Figure 3 Test circuit for d.c.-injection equivalent load test 34H20 Figure 4 Mixed-frequency test Gene
23、rators in series 35H21 Figure 5 Mixed-frequency test Series transformer . 36H22 Figure 6 Combination of torque and current in a mixed-frequency test . 37H23 Figure 7 Rotor-feeding mixed-frequency method 38H24 Table 1 Preferred methods. 39H27 60034-29 IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISS
24、ION _ ROTATING ELECTRICAL MACHINES Part 29: Equivalent loading and superposition techniques Indirect testing to determine temperature rise FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committe
25、es (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Re
26、ports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and
27、 non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreement
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29、re accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote int
30、ernational uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
31、 the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC
32、or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expe
33、nses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Atte
34、ntion is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60034-29 has been prepared by IEC technical committee 2: Rotating machi
35、nery. It cancels and replaces IEC 61986:2002 which is withdrawn. The text of this standard is based on the following documents: FDIS Report on voting 2/1476/FDIS 2/1491A/RVDFull information on the voting for the approval of this standard can be found in the report on voting indicated in the above ta
36、ble. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 60034 series, under the general title Rotating electrical machines, can be found on the IEC website. 4 60034-29 IEC:2008 The committee has decided that the contents of this publicatio
37、n 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. 60034-29 IEC:2008 5 INTRODUC
38、TION The object of this standard is to provide various indirect load tests, the purpose of which is to determine the temperature rise of rotating electrical machines, including a.c. induction machines, a.c. synchronous machines and d.c. machines. The test methods in some cases provide, in addition,
39、means of measuring or estimating other parameters such as losses and vibration, but the methods are not designed specifically to provide such data. The proposed test methods are considered equivalent, the choice relying only on the location, the testing equipment and the machine type, and the test r
40、esult accuracy. This standard should not be interpreted as requiring any or all of the tests on any given machine. Particular tests are subject to a special agreement between the manufacturer and the purchaser. NOTE As the methods reproduce only approximately the thermal conditions of the machines u
41、nder rated condition, temperature-rise measurement results achieved from tests with these methods may be taken as the basis for the evaluation of machine heating in accordance with 8.10 of IEC 60034-1 by agreement between the manufacturer and the purchaser. 6 60034-29 IEC:2008 ROTATING ELECTRICAL MA
42、CHINES Part 29: Equivalent loading and superposition techniques Indirect testing to determine temperature rise 1 Scope This International Standard applies to machines covered by IEC 60034-1 when they cannot be loaded to a specific condition (rated or otherwise). It is applicable to both motors and g
43、enerators. 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 of the referenced document (including any amendments) applies. IEC 60034-1:200
44、4, Rotating electrical machines Part 1: Rating and performance IEC 60034-2-1, Rotating electrical machines Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles) 3 Symbols and units For the purposes of this document, the following symbo
45、ls and units apply. K slope factor of temperature rise, K/W NOTE 1 The full name of K is “slope factor of the straight line characterizing variation of temperature rise with losses”, see IEC 60027-4, item 901. temperature rise, K temperature, C P power, loss, WI current, AR resistance, X reactance,
46、U voltage, V E e.m.f., V f frequency, Hzf1,2main/auxiliary frequency, Hz t time interval, s T torque, NmJ moment of inertia, kgm2cos power factor method uncertainty, %NOTE 2 The definition implies that 0 means test temperature rise is higher than at actual load condition. 60034-29 IEC:2008 7 famplit
47、ude of frequency deviation, Hz ratio of auxiliary voltage to main voltage correction factor angular frequency, rad/s Subscripts m, n, o, p test conditions 1, 2, 3, etc. machine component (e.g. stator winding, rotor winding, stator core, etc.) NOTE 3 If not indicated otherwise, numbers 1, 2, 3 will b
48、e used as assigned above. t test f field a ambient, referring to reference coolant (see IEC 60034-1, 8.2) c due to constant losses L leakage N rated value equiv equivalent-load test super superposition test 4 General test requirements Measurement of the electrical parameters shall be made as follows
49、. a) The class of accuracy of measuring instruments shall be not greater than 0,5. b) The measuring range of analogue instruments shall be chosen with a view to the measured values being higher than 30 % of the full-scale range. These requirements need not be complied with in the case of the three-phase power measurement by means of two wattmeters, but the currents
