IEC 60034-28-2012 Rotating electrical machines - Part 28 Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage.pdf

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1、 IEC 60034-28 Edition 2.0 2012-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Rotating electrical machines Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors Machines lectriques tournantes Partie 28: Mthodes dessai pour l

2、a dtermination des grandeurs des schmas dquivalence des circuits pour moteurs induction cage basse tension triphass IEC60034-28:2012 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publicatio

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16、mentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60034-28 Edition 2.0 2012-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Rotating electrical machines Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-volta

17、ge cage induction motors Machines lectriques tournantes Partie 28: Mthodes dessai pour la dtermination des grandeurs des schmas dquivalence des circuits pour moteurs induction cage basse tension triphass INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 29.16

18、0 PRICE CODE CODE PRIX ISBN 978-2-83220-553-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que

19、 vous avez obtenu cette publication via un distributeur agr. colourinside 2 60034-28 IEC:2012 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms, definitions, symbols and conventions 7 3.1 Terms and definitions 7 3.2 Symbols 8 3.3 Subscripts . 9 3.4 Winding connect

20、ion . 9 4 Test requirements 10 4.1 General . 10 4.2 Frequency and voltage 10 4.3 Instrumentation . 10 4.3.1 Measuring instruments for electrical quantities, speed and frequency 10 4.3.2 Instrument transformers . 10 4.3.3 Temperature measurement 10 5 Approximations and uncertainties . 10 6 Test proce

21、dures . 11 6.1 General . 11 6.2 Stator d.c. line-to-line resistance measurement . 11 6.3 Load-test at rated load 11 6.4 Load curve test 12 6.5 No-load test . 12 6.6 Reverse rotation and locked rotor tests . 13 6.6.1 General . 13 6.6.2 Reverse rotation test . 13 6.6.3 Locked rotor test 13 7 Determina

22、tion of motor quantities . 13 7.1 General . 13 7.2 Resistance of stator winding Rs. 15 7.3 Total stator inductance Lts= Lm+ Ls15 7.3.1 General . 15 7.3.2 Determination procedure . 15 7.4 Equivalent resistance of iron losses Rfe16 7.4.1 Constant losses . 16 7.4.2 Friction and windage losses. 17 7.4.3

23、 Iron losses . 17 7.5 Total leakage inductance Lt. 18 7.5.1 General . 18 7.5.2 Distribution of leakage inductances between stator and rotor. 18 7.5.3 Determination of total leakage inductance from a reverse rotation or locked rotor test (6.6) 18 7.5.4 Determination of total leakage inductance from a

24、 load curve test (6.4) 20 7.6 Magnetizing inductance Lm and voltage Um21 7.6.1 From a reverse rotation or locked rotor test (6.6) . 21 7.6.2 From a load curve test (6.4) . 21 60034-28 IEC:2012 3 7.7 Stator and rotor leakage inductances Lsand Lr . 22 7.7.1 From a reverse rotation or locked rotor test

25、 (6.6) . 22 7.7.2 From a load curve test (6.4) . 22 7.8 Inductances for calculations at constant flux (rated load) . 22 7.9 Resistance of rotor cage Rr referred to the stator winding and frequency 23 7.10 Equivalent resistance of iron losses Rfe25 Annex A (informative) Sample calculation 26 Figure 1

26、 Type-T equivalent circuit diagram 14 Figure 2 Type-T equivalent circuit diagram (iron losses disregarded) . 14 Figure 3 Type-L equivalent circuit diagram (iron losses disregarded) . 14 Figure 4 Type- equivalent circuit diagram. 15 Figure 5 Typical characteristics of inductance L over current I . 16

27、 4 60034-28 IEC:2012 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ROTATING ELECTRICAL MACHINES Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwi

28、de organization for standardization comprising all national electrotechnical committees (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 acti

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35、sponsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical

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37、cations. 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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

38、patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60034-28 has been prepared by IEC technical committee 2: Rotating machinery. This second edition cancels and replaces the first edition published in 2007. This edition constitut

39、es a technical revision. This edition includes the following significant technical changes with respect to the previous edition. a) The formulae are now all given for equivalent star-connection equivalent circuit diagrams. They are applied even in the case of delta connected windings. All formulae f

40、or delta-connected equivalent circuit diagrams have been moved to notes. b) Procedures for the determination of equivalent circuit parameters from a load curve test as an alternative to the reverse rotation and locked rotor tests have been added. 60034-28 IEC:2012 5 The text of this standard is base

41、d on the following documents: FDIS Report on voting 2/1685/FDIS 2/1688/RVD Full information on 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. NOTE A t

42、able of cross-references of all IEC TC 2 publications can be found in the IEC TC 2 dashboard on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data rela

43、ted to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct unders

44、tanding of its contents. Users should therefore print this document using a colour printer. 6 60034-28 IEC:2012 INTRODUCTION Equivalent circuits are widely used in the control of adjustable speed drives with induction motors supplied by frequency inverters. The motor parameters are required for the

45、realisation of flux oriented control or other model-based control algorithms. Their knowledge is required by suppliers and system engineers, especially when motors and frequency inverters from different suppliers are combined. This standard provides a standardized test procedure to determine the ele

46、ctric motor parameters. At the same time the draft offers an improved understanding of the equivalent circuit method. The procedures can be carried out in laboratories equipped for standard electric machinery tests. NOTE This standards main purpose is for assistance in modelling frequency controlled

47、 motors. Due to the simplifications the results cannot be used to determine motor performance or efficiency accurately. A related technical specification is IEC/TS 60034-25 where required motor parameters are listed, but their definition and methods of determination are not included. 60034-28 IEC:20

48、12 7 ROTATING ELECTRICAL MACHINES Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors 1 Scope This part of the IEC 60034 series applies to three-phase low-voltage cage induction motors of frame numbers 56 to 400 as specifi

49、ed in IEC 60072-1. This standard establishes procedures to obtain values for elements of single phase equivalent circuit diagrams from tests and defines standard elements of these diagrams. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated