1、 IEC 60947-4-2 Edition 3.0 2011-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage switchgear and controlgear Part 4-2: Contactors and motor-starters AC semiconductor motor controllers and starters Appareillage basse tension Partie 4-2: Contacteurs et dmarreurs de moteurs Gradateurs et dmarr
2、eurs semiconducteurs de moteurs courant alternatif IEC 60947-4-2:2011 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or
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16、lication 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 60947-4-2 Edition 3.0 2011-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage switchgear and controlgear Part 4-2: Contactors and moto
17、r-starters AC semiconductor motor controllers and starters Appareillage basse tension Partie 4-2: Contacteurs et dmarreurs de moteurs Gradateurs et dmarreurs semiconducteurs de moteurs courant alternatif INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XD ICS 29.1
18、30.20 PRICE CODE CODE PRIX ISBN 978-2-88912-505-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60947-4-2 IEC:2011 CONTENTS FOREWORD . 6 INTRODUCTION . 8 1 Scope . 9 2 Normative references . 10 3 Terms, definitio
19、ns, symbols and abbreviations 10 3.1 General . 10 3.2 Alphabetical index of terms . 10 3.3 Terms and definitions concerning a.c. semiconductor motor controllers and starters 12 3.4 Terms and definitions concerning hybrid motor controllers and starters . 14 3.5 Terms and definitions concerning EMC de
20、finitions . 18 3.6 Symbols and abbreviations 19 4 Classification 19 5 Characteristics of a.c. semiconductor motor controllers and starters . 20 5.1 Summary of characteristics . 20 5.2 Type of equipment . 20 5.2.1 Form of equipment 20 5.2.2 Number of poles 20 5.2.3 Kind of current . 20 5.2.4 Interrup
21、ting medium (air, vacuum, etc.) . 20 5.2.5 Operating conditions of the equipment . 20 5.3 Rated and limiting values for main circuits . 21 5.3.1 Rated voltages 21 5.3.2 Currents 23 5.3.3 Rated frequency 23 5.3.4 Rated duty . 23 5.3.5 Normal load and overload characteristics 24 5.3.6 Rated conditiona
22、l short-circuit current . 25 5.4 Utilization category 25 5.4.1 General . 25 5.4.2 Assignment of ratings based on the results of tests . 26 5.5 Control circuits 27 5.6 Auxiliary circuits 27 5.7 Characteristics of relays and releases (overload relays) 27 5.7.1 Summary of characteristics 28 5.7.2 Types
23、 of relay or release . 28 5.7.3 Characteristic values . 28 5.7.4 Designation and current settings of overload relays . 29 5.7.5 Time-current characteristics of overload relays 29 5.7.6 Influence of ambient air temperature . 30 5.8 Co-ordination with short-circuit protective devices (SCPD) 30 6 Produ
24、ct information 30 6.1 Nature of information . 30 6.2 Marking . 31 6.3 Instructions for installation, operation, and maintenance . 31 7 Normal service, mounting and transport conditions . 32 60947-4-2 IEC:2011 3 7.1 Normal service conditions . 32 7.1.1 Ambient air temperature 32 7.1.2 Altitude 32 7.1
25、3 Atmospheric conditions 32 7.1.4 Shock and vibrations . 32 7.2 Conditions during transport and storage 32 7.3 Mounting . 32 7.4 Electrical system disturbances and influences . 32 8 Constructional and performance requirements 33 8.1 Constructional requirements 33 8.1.1 General . 33 8.1.2 Materials
26、 33 8.1.3 Current-carrying parts and their connections . 33 8.1.4 Clearances and creepage distances 33 8.1.5 Actuator . 33 8.1.6 Indication of the contact position . 33 8.1.7 Additional requirements for equipment suitable for isolation 33 8.1.8 Terminals 33 8.1.9 Additional requirements for equipme
27、nt provided with a neutral pole . 34 8.1.10 Provisions for protective earthing 34 8.1.11 Enclosures for equipment 34 8.1.12 Degrees of protection of enclosed equipment 34 8.1.13 Conduit pull-out, torque and bending with metallic conduits . 34 8.2 Performance requirements 34 8.2.1 Operating condition
28、s 34 8.2.2 Temperature rise . 38 8.2.3 Dielectric properties. 41 8.2.4 Normal load and overload performance requirements 42 8.2.5 Co-ordination with short-circuit protective devices . 47 8.3 EMC requirements . 47 8.3.1 General . 47 8.3.2 Emission . 48 8.3.3 Immunity . 48 9 Tests 50 9.1 Kinds of test
29、s 50 9.1.1 General . 50 9.1.2 Type tests . 50 9.1.3 Routine tests . 50 9.1.4 Sampling tests . 50 9.1.5 Special tests 51 9.2 Compliance with constructional requirements 51 9.3 Compliance with performance requirements 51 9.3.1 Test sequences . 51 9.3.2 General test conditions 52 9.3.3 Performance unde
30、r no load, normal load, and overload conditions 52 9.3.4 Performance under short-circuit conditions 62 9.3.5 EMC tests 65 9.3.6 Routine and sampling tests 68 Annex A (normative) Marking and identification of terminals 70 4 60947-4-2 IEC:2011 Annex B Vacant 73 Annex C (normative) Co-ordination at the
31、 crossover current between the starter and associated SCPD 74 Annex D Vacant 78 Annex E Vacant 79 Annex F (informative) Operating capability. 80 Annex G (informative) Examples of control circuit configurations . 83 Annex H Vacant 85 Annex I (normative) Modified test circuit for short-circuit testing
32、 of semiconductor motor controllers and starters . 86 Annex J (informative) Flowchart for constructing bypassed semiconductor controllers tests . 88 Annex K (normative) Extended functions within electronic overload relays . 89 Bibliography 94 Figure 1 Semiconductor motor control devices . 13 Figure
33、2 Connecting methods 22 Figure 3 Thermal memory test . 36 Figure 4 Multiple of current setting limits for ambient air temperature compensated time-delay overload relays 62 Figure C.1 Examples of time-current withstand characteristic 77 Figure F.1 Thermal stability test profile 80 Figure F.2 Overload
34、 capability test profile 81 Figure F.3 Blocking and commutating capability test profile . 82 Figure G.1 Diagrammatic representation of an ECD . 83 Figure G.2 Single supply and control input . 83 Figure G.3 Single supply and control input . 84 Figure G.4 Controllers with an internal control supply an
35、d control input only 84 Figure I.1 - Modified circuit for short-circuit testing of semiconductor devices . 86 Figure I.2 - Time line for the short-circuit test of 9.3.4.1.6 87 Figure K.1 Test circuit for the verification of the operating characteristic of a residual current electronic overload relay
36、 . 93 Table 1 Functional possibilities of semiconductor motor control devices 14 Table 2 Utilization categories . 26 Table 3 Relative levels of severity 27 Table 4 Trip classes of overload relays 29 Table 5 Limits of operation of time-delay overload relays when energized on all poles . 35 Table 6 Li
37、mits of operation of three-pole time-delay overload relays when energized on two poles only 37 Table 7 Temperature rise limits for insulated coils in air and in oil 40 Table 8 Intermittent duty test cycle data . 40 Table 9 Minimum overload current withstand time (T x ) in relation to overload curren
38、t ratio (X) and corresponding to overload relay trip class (see Table 19) 43 Table 10 Minimum requirements for thermal stability test conditions a. 43 60947-4-2 IEC:2011 5 Table 11 Minimum requirements for overload capability test conditions 44 Table 12 Minimum requirements and conditions for perfor
39、mance testing with an induction motor load . 44 Table 13 Making and breaking capacity test; making and breaking conditions according to utilization categories for the mechanical switching device of hybrid motor controllers H1, H2, H3 and for certain forms of bypassed controllers 46 Table 14 Conventi
40、onal operational performance making and breaking conditions according to utilization categories for the mechanical switching device of hybrid motor controllers H1B, H2B, H3B and for certain forms of bypassed controllers 46 Table 15 Specific acceptance or performance criteria when EM disturbances are
41、 present . 49 Table 16 Thermal stability test specifications . 57 Table 17 Initial case temperature requirements 57 Table 18 Blocking and commutating capability test specifications 59 Table 19 Terminal disturbance voltage limits for conducted radio-frequency emission . 67 Table 20 Radiated emissions
42、 test limits . 67 Table A.1 Main circuit terminal markings 70 Table C.1 Test conditions 76 Table K.1 Operating time of residual current electronic overload relays . 90 6 60947-4-2 IEC:2011 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 4-2: Contactors and mot
43、or-starters AC semiconductor motor controllers and starters FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-
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