1、 IEC 60947-4-1Edition 3.0 2009-09INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage switchgear and controlgear Part 4-1: Contactors and motor-starters Electromechanical contactors and motor-starters Appareillage basse tension Partie 4-1: Contacteurs et dmarreurs de moteurs Contacteurs et dmarreu
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16、vez 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 60947-4-1Edition 3.0 2009-09INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage switchgear and controlgear Part 4-1: Contactors and motor-starters Electromechan
17、ical contactors and motor-starters Appareillage basse tension Partie 4-1: Contacteurs et dmarreurs de moteurs Contacteurs et dmarreurs lectromcaniques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XFICS 29.120.99; 29.130.20 PRICE CODECODE PRIXISBN 2-8318-1058-9
18、 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colourinside 2 60947-4-1 IEC:2009 CONTENTS FOREWORD.6 1 Scope and object8 1.1 Scope8 1.1.1 AC and DC contactors .8 1.1.2 AC motor-starters 8 1.2 Exclusions.10 1.3 Obje
19、ct .10 2 Normative references .11 3 Terms, definitions, symbols and abbreviations12 3.1 General .12 3.2 Alphabetical index of terms .12 3.3 Terms and definitions concerning contactors.13 3.4 Terms and definitions concerning starters .15 3.5 Terms and definitions concerning characteristic quantities
20、19 3.6 Symbols and abbreviations19 4 Classification20 5 Characteristics of contactors and starters.20 5.1 Summary of characteristics .20 5.2 Type of equipment.20 5.2.1 Kind of equipment20 5.2.2 Number of poles 20 5.2.3 Kind of current (a.c. or d.c.).20 5.2.4 Interrupting medium (air, oil, gas, vacuu
21、m, 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 or powers 22 5.3.3 Rated frequency 24 5.3.4 Rated duties 24 5.3.5 Normal load and overload characteristics 25 5.3.6 Rated conditional short-circuit cur
22、rent .27 5.4 Utilization category27 5.4.1 General .27 5.4.2 Assignment of utilization categories based on the results of tests27 5.5 Control circuits 29 5.6 Auxiliary circuits 30 5.7 Characteristics of relays and releases (overload relays) 30 5.7.1 Summary of characteristics30 5.7.2 Types of relay o
23、r release .30 5.7.3 Characteristic values .30 5.7.4 Designation and current settings of overload relays.32 5.7.5 Time-current characteristics of overload relays32 5.7.6 Influence of ambient air temperature .33 5.8 Co-ordination with short-circuit protective devices .33 5.9 Void 33 60947-4-1 IEC:2009
24、 3 5.10 Types and characteristics of automatic change-over devices and automatic acceleration control devices 33 5.10.1 Types 33 5.10.2 Characteristics 33 5.11 Types and characteristics of auto-transformers for two-step auto-transformer starters34 5.12 Types and characteristics of starting resistors
25、 for rheostatic rotor starters.34 6 Product information 34 6.1 Nature of information.34 6.1.1 Identification34 6.1.2 Characteristics, basic rated values and utilization35 6.2 Marking .36 6.3 Instructions for installation, operation and maintenance 36 7 Normal service, mounting and transport conditio
26、ns.37 8 Constructional and performance requirements37 8.1 Constructional requirements37 8.1.1 General .37 8.1.2 Materials .37 8.1.3 Current-carrying parts and their connections .37 8.1.4 Clearances and creepage distances 37 8.1.5 Actuator.37 8.1.6 Indication of the contact position .38 8.1.7 Additio
27、nal requirements for equipment suitable for isolation 38 8.1.8 Terminals 38 8.1.9 Additional requirements for equipment provided with a neutral pole.38 8.1.10 Provisions for protective earthing 38 8.1.11 Enclosures for equipment 38 8.1.12 Degrees of protection of enclosed equipment 38 8.1.13 Conduit
28、 pull-out, torque and bending with metallic conduits.39 8.2 Performance requirements 39 8.2.1 Operating conditions39 8.2.2 Temperature rise .44 8.2.3 Dielectric properties.46 8.2.4 Normal load and overload performance requirements 46 8.2.5 Co-ordination with short-circuit protective devices .51 8.2.
29、6 Void.52 8.2.7 Additional requirements for combination starters and combination switching devices suitable for isolation 52 8.3 Electromagnetic compatibility (EMC) .52 8.3.1 General .52 8.3.2 Immunity .52 8.3.3 Emission .53 9 Tests 53 9.1 Kinds of test 53 9.1.1 General .53 9.1.2 Type tests .54 9.1.
30、3 Routine tests .54 9.1.4 Sampling tests.54 9.1.5 Special tests55 4 60947-4-1 IEC:2009 9.2 Compliance with constructional requirements 55 9.3 Compliance with performance requirements 55 9.3.1 Test sequences .55 9.3.2 General test conditions56 9.3.3 Performance under no load, normal load and overload
31、 conditions .56 9.3.4 Performance under short-circuit conditions 64 9.3.5 Overload current withstand capability of contactors .69 9.3.6 Routine tests and sampling tests .69 9.4 EMC tests .70 9.4.1 General .70 9.4.2 Immunity .70 9.4.3 Emission .71 Annex A (normative) Marking and identification of ter
32、minals of contactors and associated overload relays81 Annex B (normative) Special tests .85 Annex C Void93 Annex D (informative) Items subject to agreement between manufacturer and user .94 Annex E (informative) Examples of control circuit configurations95 Annex F (normative) Requirements for auxili
33、ary contact linked with power contact (mirror contact) .98 Annex G (informative) Rated operational currents and rated operational powers of switching devices for electrical motors 101 Annex H (normative) Extended functions within electronic overload relays.105 Annex I (informative) AC1 contactors fo
34、r use with semiconductor controlled motor loads 111 Annex J Void 112 Annex K (normative) Procedure to determine data for electromechanical contactors used in functional safety applications113 Bibliography122 Figure 1 Typical curves of currents and torques during a star-delta start (see 1.1.2.2.1) 73
35、 Figure 2 Typical curves of currents and torques during an auto-transformer start (see 1.1.2.2.2) 74 Figure 3 Typical variants of protected starters, combination starters, protected switching devices and combination switching devices .75 Figure 4 Example of three-phase diagram of a rheostatic rotor
36、starter with three starting steps and one direction of rotation (in the case when all the mechanical switching devices are contactors) .76 Figure 5 Typical methods and diagrams of starting alternating-current induction motors by means of auto-transformers77 Figure 6 Examples of speed/time curves cor
37、responding to cases a), b), c), d), e) and f) of 5.3.5.5 (the dotted parts of the curves correspond to the periods when no current flows through the motor) .78 Figure 7 Multiple of current setting limits for ambient air temperature compensated time-delay overload relays (see 8.2.1.5.1) 79 Figure 8 T
38、hermal memory test .80 Figure B.1 Examples of time-current withstand characteristic.92 60947-4-1 IEC:2009 5 Figure F.1 Mirror contact99 Figure H.1 Test circuit for the verification of the operating characteristic of a ground/earth fault relay.110 Figure K.1 Plot of Weibull median rank regression .12
39、1 Table 1 Utilization categories.29 Table 2 Trip classes of overload relays 32 Table 3 Limits of operation of time-delay overload relays when energized on all poles.42 Table 4 Limits of operation of three-pole time-delay overload relays when energized on two poles only43 Table 5 Temperature rise lim
40、its for insulated coils in air and in oil44 Table 6 Intermittent duty test cycle data.45 Table 7 Making and breaking capacities Making and breaking conditions according to utilization category47 Table 8 Relationship between current broken Ic and off-time for the verification of rated making and brea
41、king capacities .48 Table 9 Operational current determination for utilization categories AC-6a and AC-6b when derived from AC-3 ratings49 Table 10 Conventional operational performance Making and breaking conditions according to utilization category50 Table 11 Overload current withstand requirements
42、51 Table 12 Specific acceptance criteria for immunity tests 53 Table 13 Value of the prospective test current according to the rated operational current66 Table 14 EMC immunity tests.70 Table 15 Conducted radio-frequency emission test limits .72 Table 16 Radiated emission test limits .72 Table B.1 V
43、erification of the number of on-load operating cycles Conditions for making and breaking corresponding to the several utilization categories.88 Table B.2 Test conditions 91 Table F.1 Test voltage according to altitude.99 Table G.1 Rated operational powers and rated operational currents of motors.102
44、 Table H.1 Operating time of ground/earth fault relays 107 Table K.1 Failure mode of contactors.115 Table K.2 Typical failure ratios for normally open contactors119 Table K.3 Example of 15 sorted ascending times to failure of contactors .120 6 60947-4-1 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMIS
45、SION _ LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 4-1: Contactors and motor-starters Electromechanical contactors and motor-starters FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (I
46、EC 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 Reports
47、, 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 non-
48、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 agreements of
49、IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. Whi
