1、 IEC 61140 Edition 4.0 2016-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Protection against electric shock Common aspects for installations and equipment Protection contre les chocs lectriques Aspects communs aux installations et aux matriels IEC 61140:2016-01(en-fr) BASIC SAFETY PUBLICATION PUBLI
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19、 dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 61140 Edition 4.0 2016-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Protection against electric shock Common aspects for installations and equipment Protection contre les chocs l
20、ectriques Aspects communs aux installations et aux matriels INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 13.260; 29.020; 91.140.50 ISBN 978-2-8322-3103-6 BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT Registered trademark of the International
21、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 vous avez obtenu cette publication via un distributeur agr. 2 IEC 61140:2016 IEC 2016 C
22、ONTENTS FOREWORD . 5 1 Scope 7 2 Normative references 7 3 Terms and definitions 8 4 Fundamental rule of protection against electric shock 18 4.1 General . 18 4.2 Normal conditions . 19 4.3 Single-fault conditions . 20 4.3.1 General . 20 4.3.2 Protection by independent protective provisions 20 4.3.3
23、Protection by an enhanced protective provision . 20 4.4 Additional protection . 20 4.5 Protection against electric burns . 21 4.6 Protection against physiological effects without adverse health effect . 21 4.6.1 General . 21 4.6.2 Muscular reaction 21 4.6.3 Effects of touch current of discharge of e
24、lectrostatic charges . 22 4.6.4 Thermal effects 22 5 Protective provisions (elements of protective measures) 22 5.1 General . 22 5.2 Provisions for basic protection 22 5.2.1 General . 22 5.2.2 Basic insulation . 22 5.2.3 Protective barriers or enclosures . 23 5.2.4 Obstacles 23 5.2.5 Placing out of
25、arms reach . 23 5.2.6 Limitation of voltage 24 5.2.7 Limitation of steady-state touch current and energy . 24 5.2.8 Potential grading . 25 5.2.9 Other provisions for basic protection 25 5.3 Provisions for fault protection 25 5.3.1 General . 25 5.3.2 Supplementary insulation . 25 5.3.3 Protective-equ
26、ipotential-bonding 25 5.3.4 Protective screening 27 5.3.5 Indication and disconnection in high-voltage installations and systems 27 5.3.6 Automatic disconnection of supply . 27 5.3.7 Simple separation (between circuits) . 28 5.3.8 Non-conducting environment . 28 5.3.9 Potential grading . 28 5.3.10 O
27、ther provisions for fault protection . 28 5.4 Enhanced protective provisions. 28 5.4.1 General . 28 5.4.2 Reinforced insulation . 29 5.4.3 Protective separation between circuits . 29 5.4.4 Limited current source . 29 IEC 61140:2016 IEC 2016 3 5.4.5 Protective impedance device . 29 5.4.6 Other provis
28、ions for enhanced protection . 30 5.5 Provisions for additional protection . 30 5.5.1 Additional protection by residual current protective device (RCD) I n 30 mA . 30 5.5.2 Additional protection by supplementary equipotential bonding . 30 6 Protective measures 30 6.1 General . 30 6.2 Protection by a
29、utomatic disconnection of supply . 31 6.3 Protection by double or reinforced insulation . 31 6.4 Protection by protective equipotential bonding 31 6.5 Protection by electrical separation 31 6.6 Protection by non-conducting environment (low-voltage) . 31 6.7 Protection by SELV system . 32 6.8 Protect
30、ion by PELV system . 32 6.9 Protection by limitation of steady-state touch current and charge 32 6.10 Additional protection . 32 6.10.1 Additional protection by residual current protective device (RCD) I n 30 mA . 32 6.10.2 Additional protection by supplementary protective equipotential bonding . 32
31、 6.11 Protection by other measures . 33 7 Co-ordination between electrical equipment and protective provisions within an electrical installation 33 7.1 General . 33 7.2 Class 0 equipment 33 7.3 Class I equipment . 34 7.3.1 General . 34 7.3.2 Insulation . 34 7.3.3 Connection to the protective conduct
32、or 34 7.3.4 Accessible surfaces of parts of insulating material . 34 7.3.5 Connection of a protective conductor . 35 7.4 Class II equipment 35 7.4.1 General . 35 7.4.2 Insulation . 35 7.4.3 Protective bonding . 36 7.4.4 Marking . 36 7.5 Class III equipment . 36 7.5.1 General . 36 7.5.2 Voltages 36 7
33、.5.3 Protective bonding . 37 7.5.4 Marking . 37 7.6 Touch currents, protective conductor currents . 37 7.6.1 General . 37 7.6.2 Touch currents 37 7.6.3 Protective conductor currents 37 7.6.4 Other requirements 39 7.6.5 Other effects 39 7.7 Safety and boundary clearances and hazard marking for high-v
34、oltage installations 39 4 IEC 61140:2016 IEC 2016 7.8 Functional earthing . 40 8 Special operating and servicing conditions 40 8.1 General . 40 8.2 Devices to be operated manually and components intended to be replaced manually . 40 8.2.1 General . 40 8.2.2 Devices to be operated or components inten
35、ded to be replaced by ordinary persons in low-voltage installations, systems and equipment . 40 8.2.3 Devices to be operated or components intended to be replaced by skilled or instructed persons 41 8.3 Electrical values after isolation 41 8.4 Devices for isolation 42 8.4.1 General . 42 8.4.2 Device
36、s for isolation for low voltage . 42 8.4.3 Devices for isolation for high voltage . 43 Annex A (informative) Survey of protective measures as implemented by protective provisions . 45 Annex B (informative) Index of terms . 48 Annex C (informative) List of notes concerning certain countries . 53 Bibl
37、iography 54 Figure A.1 Protective measures with basic and fault protection 45 Figure A.2 Protective measures with limited values of electrical quantities . 46 Figure A.3 Protective measure: additional protection (in addition to basic and/or fault protection) 47 Table 1 Limits for voltage bands 19 Ta
38、ble 2 Touch voltage thresholds for reaction 21 Table 3 Application of equipment in a low-voltage installation 33 Table 4 Maximum protective conductor current for frequencies up to 1 kHz . 38 Table 5 Maximum protective conductor current for DC . 38 Table 6 Minimum impulse withstand voltage of devices
39、 for isolation related to the nominal voltage 43 IEC 61140:2016 IEC 2016 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ PROTECTION AGAINST ELECTRIC SHOCK COMMON ASPECTS FOR INSTALLATION AND EQUIPMENT FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for stand
40、ardization 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 activities, IEC publishes Int
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49、 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 patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61140 has been prepared by IEC te
