1、 IEC 60934 Edition 3.2 2013-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Circuit-breakers for equipment (CBE) Disjoncteurs pour quipement (DPE) IEC60934:2000+A1:2007+A2:2013 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specif
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15、vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60934 Edition 3.2 2013-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Circuit-breakers for equipment (CBE) Disjoncteurs pour quipement (DPE) INTERNATIONAL ELECTROTECHNICAL COMM
16、ISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.120.40; 29.120.50 ISBN 978-2-8322-0571-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authoriz
17、ed distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60934 IEC:2000+A1:2007+A2:2013 CONTENTS FOREWORD . 6 1 Scope . 8 2 Normative references . 9 3 Definitions 10 3.1 Definitions related to protection and switching devices 10 3.2 General t
18、erms . 11 3.3 Definitions related to current . 12 3.4 Definitions related to voltage . 13 3.5 Definitions related to constructional elements of a CBE . 13 3.6 Definitions related to releases in CBEs 15 3.7 Definitions related to insulation and clearances in a CBE 16 3.8 Definitions related to operat
19、ion of CBEs 18 3.9 Definitions related to the operating characteristic of CBEs. 19 3.10 Definitions related to characteristic quantities 19 3.11 Definitions concerning coordination of CBEs and SCPDs associated in the same circuit . 20 3.12 Definitions related to terminals and terminations . 21 3.13
20、Definitions related to tests . 23 4 Classification 24 4.1 Quantity of poles . 24 4.2 Method of mounting . 24 4.3 Method of connection 24 4.4 Method of operation 24 4.5 Mode of tripping 24 4.6 Influence of the ambient temperature 25 4.7 Trip-free behaviour 25 4.8 Influence of the mounting position .
21、25 4.9 Electrical performance . 25 5 Characteristics of CBEs 25 5.1 List of characteristics 25 5.2 Rated quantities 26 5.3 Standard and preferred values 27 6 Marking and other product information 28 7 Standard conditions for operation in service . 29 7.1 Ambient air temperature 29 7.2 Altitude 29 7.
22、3 Atmospheric conditions . 30 8 Requirements for construction and operation 30 8.1 Mechanical design . 30 8.2 Protection against electric shock . 42 8.3 Temperature-rise . 42 8.4 Dielectric properties 43 8.5 Conditions for automatic operation 44 60934 IEC:2000+A1:2007+A2:2013 3 8.6 Electrical perfor
23、mance and behaviour at rated short-circuit capacity 46 8.7 Performance under conditional short-circuit current conditions 46 8.8 Resistance to mechanical shock and impact 46 8.9 Resistance to heat 46 8.10 Resistance to abnormal heat and to fire 46 8.11 Resistance to tracking . 46 8.12 Resistance to
24、rusting . 47 9 Tests 48 9.1 Type tests and sequences . 48 9.2 Test conditions 49 9.3 Test of indelibility of marking . 50 9.4 Test of reliability of terminals, current-carrying parts and connections . 50 9.5 Test of reliability of terminals for external conductors (see 3.12.15) 53 9.6 Test of protec
25、tion against electric shock 54 9.7 Test of dielectric properties . 55 9.8 Test of temperature-rise 58 9.9 28-day test 59 9.10 Test of tripping characteristics . 59 9.11 Verification of electrical operational capability . 60 9.12 Conditional short-circuit tests 64 9.13 Test of resistance to mechanica
26、l shock and impact . 67 9.14 Tests of resistance to heat 67 9.15 Test of resistance to abnormal heat and to fire 68 9.16 Test of resistance to tracking. 68 9.17 Test of resistance to rusting 69 Annex A (normative) Time-current zone 75 Annex B (normative) Determination of clearances and creepage dist
27、ances . 76 Annex C (normative) Test sequences and number of samples to be submitted for certification purposes. 78 Annex D (normative) Correspondence between ISO and AWG copper conductors 81 Annex E (normative) Examples of terminals 82 Annex F (informative) Coordination between a CBE and a short-cir
28、cuit protective device (SCPD) associated in the same circuit . 91 Annex G (normative) Electromagnetic behaviour of CBEs . 104 Annex H (normative) Correlation between nominal voltage of the supply systems and the line-to-neutral voltage relevant for determining the rated impulse voltage . 106 Annex J
29、 (normative) Routine or statistical tests 107 Annex K (normative) Additional requirements for electrical performance of E-type CBEs . 109 Annex L (normative) Additional requirements for CBEs suitable for isolation . 110 Bibliography 114 2 4 60934 IEC:2000+A1:2007+A2:2013 Figure 1 Thread-forming scre
30、w 70 Figure 2 Thread-cutting screw 70 Figures 3 to 6 Test circuits for overcurrent tests . 71 Figure 7 Standard test finger 72 Figure 8 Ball pressure apparatus . 73 Figure 9 Arrangements and dimensions of the electrodes for the tracking test . 73 Figures 10 to 13 Test circuits for verification of th
31、e conditional short-circuit current . 74 Figures A.1 to A.4 . 75 Figures B.1 to B.10 . 77 Figure E.1 Examples of pillar terminals 82 Figure E.2 Examples of screw terminals and stud terminals . 83 Figure E.3 Examples of saddle terminals . 84 Figure E.4 Examples of lug terminals . 84 Figure E.5 Exampl
32、es of screwless terminals with clamping means . 85 Figure E.6 Dimensions of male tabs . 86 Figure E.7 Dimensions of round dimple detents of male tabs (see figure E.6) 87 Figure E.8 Dimensions of rectangular dimple detents of male tabs . 87 Figure E.9 Dimensions of hole detents of male tabs . 87 Figu
33、re E.10 Dimensions of male tabs . 88 Figure E.11 Dimensions of male tabs . 88 Figure E.12 Dimensions of male tabs . 88 Figure E.13 Dimensions of male tabs for two different sizes of female connectors 89 Figure E.14 Dimensions of female connectors for male tabs 90 Figure F.1 Thermal only CBE, backed
34、up by thermal magnetic circuit-breaker . 97 Figure F.2 Thermal only CBE, backed up by a fuse 98 Figure F.3 Thermal-magnetic CBE backed up by thermal-magnetic circuit-breaker 99 Figure F.4 Hydraulic-magnetic CBE backed up by thermal-magnetic circuit-breaker. 100 Figure F.5 Thermal CBE backed up by a
35、hydraulic-magnetic circuit-breaker 100 Figure F.6 Energy-limiting CBE, backed up by thermal-magnetic circuit-breaker 101 Figure F.7 Energy-limiting CBE, backed up by a fuse . 102 Figure F.8 Examples illustrating proper and improper coordination 103 Table 1 Minimum clearances for basic and reinforced
36、 insulation 32 Table 2 Minimum creepage distances 34 Table 3 Connectable cross-sectional areas of external copper conductors for screw type and screwless terminals . 36 Table 4 Minimum distance between clamping screw and the end of conductor when fully inserted 37 Table 5 Dimensions of tabs in milli
37、metres Dimensions A, B, C, D, E, F, J, M, N, P and Q 40 60934 IEC:2000+A1:2007+A2:2013 5 Table 6 Dimensions of tabs in millimetres Dimensions H, I, T, K, R, G, L, S and U 41 Table 7 Dimensions in millimetres of combined male tabs for two different sizes of female connectors 41 Table 8 Temperature-ri
38、se values for CBEs for different reference ambient air temperatures (T) . 43 Table 9 Time-current operating characteristics . 44 Table 10 Operating limits of undervoltage and zero-voltage releases (for a.c. and d.c.) . 45 Table 11 Test conditions for electrical performance for CBEs intended for gene
39、ral use, including inductive circuits 47 Table 12 Test conditions for electrical performance of CBEs used in essentially resistive circuits only 48 Table 13 List of type tests 49 Table 14 Standard cross-sections of copper conductors corresponding to the rated currents . 50 Table 15 Screw-thread diam
40、eter and applied torques . 51 Table 16 Insertion and withdrawal forces . 52 Table 17 Push/pull force 53 Table 18 Pulling forces 53 Table 19 Make-up of conductors for the test of 9.5.3 54 Table 20 Test voltages . 57 Table 21 Impulse withstand test voltages for verification of insulation coordination
41、58 Table 22 Power factor and time constant of test circuit 65 Table C.1 Test sequences . 78 Table C.2 Number of samples for full test procedure 79 Table C.3 Reduction of samples for simplified test procedure 80 Table D.1 Correspondence between ISO and AWG conductor cross-sections 81 Table G.2.2 Mini
42、mum EMC immunity performances of CBEs 105 Table H.1 Nominal voltages and corresponding rated impulse voltages 106 Table L.1 Minimum clearances for CBEs suitable for isolation, between live parts separated when the contacts are in the open position, as a function of the rated impulse withstand voltag
43、e 111 Table L.2 Minimum creepage distances for CBEs suitable for isolation, between live parts separated when the contacts are in the open position 111 Table L.3 Test voltages for verifying isolation across the open contacts, as a function of the rated impulse withstand voltage and the altitude wher
44、e the test is carried out 113 6 60934 IEC:2000+A1:2007+A2:2013 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CIRCUIT-BREAKERS FOR EQUIPMENT (CBE) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical com
45、mittees (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, Technic
46、al Reports, 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, governmenta
47、l and 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 agre
48、ements of 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
49、and are 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 international uniformity, IEC National Committees undert
