Remerciez-le!

Remerciez @Admin pour avoir partagé cet document gratuitement, de la manière la plus simple, en partageant sur les réseaux sociaux.

IEC 61140 Edition 4.0 2016-01 REDLINE VERSION INTERNATIONAL STANDARD Protection

IEC 61140 Edition 4.0 2016-01 REDLINE VERSION INTERNATIONAL STANDARD Protection against electric shock – Common aspects for installations and equipment INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.260; 29.020; 91.140.50 ISBN 978-2-8322-3132-6 BASIC SAFETY PUBLICATION ® Registered trademark of the International Electrotechnical Commission ® Warning! Make sure that you obtained this publication from an authorized distributor. colour inside This is a preview - click here to buy the full publication – 2 – IEC 61140:2016 RLV © IEC 2016 CONTENTS FOREWORD ........................................................................................................................... 5 1 Scope .............................................................................................................................. 7 2 Normative references ...................................................................................................... 7 3 Terms and definitions ...................................................................................................... 9 4 Fundamental rule of protection against electric shock .................................................... 20 4.1 General ................................................................................................................. 20 4.2 Normal conditions ................................................................................................. 20 4.3 Single-fault conditions ........................................................................................... 21 4.3.1 General ......................................................................................................... 21 4.3.2 Protection by two independent protective provisions ...................................... 22 4.3.3 Protection by an enhanced protective provision ............................................. 22 4.4 Special cases Additional protection ....................................................................... 22 4.5 Protection against electric burns ........................................................................... 22 4.6 Protection against physiological effects without adverse health effect ................... 23 4.6.1 General ......................................................................................................... 23 4.6.2 Muscular reaction .......................................................................................... 23 4.6.3 Effects of touch current of discharge of electrostatic charges ......................... 23 4.6.4 Thermal effects .............................................................................................. 23 5 Protective provisions (elements of protective measures) ................................................ 24 5.1 General ................................................................................................................. 24 5.2 Provisions for basic protection .............................................................................. 24 5.2.1 General ......................................................................................................... 24 5.2.2 Basic insulation ............................................................................................. 24 5.2.3 Protective barriers or enclosures ................................................................... 24 5.2.4 Obstacles ...................................................................................................... 25 5.2.5 Placing out of arm's reach ............................................................................. 25 5.2.6 Limitation of voltage ...................................................................................... 26 5.2.7 Limitation of steady-state touch current and charge energy ........................... 26 5.2.8 Potential grading ........................................................................................... 27 5.2.9 Other provisions for basic protection .............................................................. 27 5.3 Provisions for fault protection ................................................................................ 27 5.3.1 General ......................................................................................................... 27 5.3.2 Supplementary insulation ............................................................................... 27 5.3.3 Protective-equipotential-bonding .................................................................... 27 5.3.4 Protective screening ...................................................................................... 29 5.3.5 Indication and disconnection in high-voltage installations and systems .......... 29 5.3.6 Automatic disconnection of supply ................................................................. 30 5.3.7 Simple separation (between circuits) ............................................................. 30 5.3.8 Non-conducting environment ......................................................................... 30 5.3.9 Potential grading ........................................................................................... 30 5.3.10 Other provisions for fault protection ............................................................... 31 5.4 Enhanced protective provisions............................................................................. 31 5.4.1 General ......................................................................................................... 31 5.4.2 Reinforced insulation ..................................................................................... 31 5.4.3 Protective separation between circuits ........................................................... 31 5.4.4 Limited current source ................................................................................... 31 This is a preview - click here to buy the full publication IEC 61140:2016 RLV © IEC 2016 – 3 – 5.4.5 Protective impedance device ......................................................................... 32 5.4.6 Other provisions for enhanced protection ....................................................... 32 5.5 Provisions for additional protection ....................................................................... 32 5.5.1 Additional protection by residual current protective device (RCD) I∆n ≤ 30 mA ................................................................................................... 32 5.5.2 Additional protection by supplementary equipotential bonding ....................... 32 6 Protective measures ...................................................................................................... 33 6.1 General ................................................................................................................. 33 6.2 Protection by automatic disconnection of supply ................................................... 33 6.3 Protection by double or reinforced insulation ......................................................... 33 6.4 Protection by protective equipotential bonding ...................................................... 33 6.5 Protection by electrical separation ........................................................................ 33 6.6 Protection by non-conducting environment (low-voltage) ....................................... 34 6.7 Protection by SELV system ................................................................................... 34 6.8 Protection by PELV system ................................................................................... 34 6.9 Protection by limitation of steady-state touch current and charge .......................... 34 6.10 Additional protection ............................................................................................. 35 6.10.1 Additional protection by residual current protective device (RCD) I∆n ≤ 30 mA ................................................................................................... 35 6.10.2 Additional protection by supplementary protective equipotential bonding ....... 35 6.11 Protection by other measures ............................................................................... 35 7 Co-ordination of between electrical equipment and of protective provisions within an electrical installation ................................................................................................. 35 7.1 General ................................................................................................................. 35 7.2 Class 0 equipment ................................................................................................ 36 7.1.1 Insulation ........................................................................................................... 7.3 Class I equipment ................................................................................................. 37 7.3.1 General ......................................................................................................... 37 7.3.2 Insulation ....................................................................................................... 37 7.3.3 Protective-equipotential-bonding Connection to the protective conductor ....... 37 7.3.4 Accessible surfaces of parts of insulating material ......................................... 37 7.3.5 Connection of a protective conductor ............................................................. 38 7.4 Class II equipment ................................................................................................ 38 7.4.1 General ......................................................................................................... 38 7.4.2 Insulation ....................................................................................................... 38 7.4.3 Protective bonding ......................................................................................... 39 7.4.4 Marking ......................................................................................................... 39 7.5 Class III equipment ............................................................................................... 39 7.5.1 General ......................................................................................................... 39 7.5.2 Voltages ........................................................................................................ 40 7.5.3 Protective bonding ......................................................................................... 40 7.5.4 Marking ......................................................................................................... 40 7.6 Touch currents, protective conductor currents, leakage currents ........................... 40 7.6.1 General ......................................................................................................... 40 7.6.2 Touch currents .............................................................................................. 40 7.6.3 Protective conductor currents ........................................................................ 41 7.6.4 Other requirements ........................................................................................ 43 7.6.5 Other effects .................................................................................................. 43 This is a preview - click here to buy the full publication – 4 – IEC 61140:2016 RLV © IEC 2016 7.7 Safety and boundary clearances and warning labels hazard marking for high-voltage installations ...................................................................................... 43 7.8 Functional earthing ............................................................................................... 44 8 Special operating and servicing conditions .................................................................... 44 8.1 General ................................................................................................................. 44 8.2 Devices to be operated manually and components intended to be replaced manually ............................................................................................................... 44 8.2.1 General ......................................................................................................... 44 8.2.2 Devices to be operated or components intended to be replaced by ordinary persons in low-voltage installations, systems and equipment ........... 44 8.2.3 Devices to be operated or components intended to be replaced by skilled or instructed persons .......................................................................... 45 8.3 Electrical values after isolation .............................................................................. 45 8.4 Devices for isolation.............................................................................................. 46 8.4.1 General ......................................................................................................... 46 8.4.2 Devices for isolation for low voltage ............................................................... 46 8.4.3 Devices for isolation for high voltage ............................................................. 47 Annex A (informative) Survey of protective measures as implemented by protective provisions ............................................................................................................................. 49 Annex B (informative) Values of maximum a.c. limits of protective conductor currents for cases 7.5.2.2 a) and 7.5.2.2 b) ............................................................................................ Annex B (informative) Index of definitions terms .................................................................. 56 Annex C (informative) List of notes concerning certain countries ......................................... 61 Bibliography .......................................................................................................................... 62 Figure A.1 – Protective measures with basic and fault protection .......................................... 51 Figure A.2 – Protective measures with limited values of electrical quantities ......................... 53 Figure A.3 – Protective measure: additional protection (in addition to basic and/or fault protection) ............................................................................................................................ 54 Table 1 – Limits for voltage bands ........................................................................................ 21 Table 2 – Touch voltage thresholds for reaction .................................................................... 23 Table 1 3 – Application of equipment in a low-voltage installation ......................................... 36 Table 4 – Maximum protective conductor current for frequencies up to 1 kHz ....................... 41 Table 5 – Maximum protective conductor current for DC ....................................................... 42 Table 6 – Minimum impulse withstand voltage of devices for isolation related to the nominal voltage .................................................................................................................... 47 This is a preview - click here to buy the full publication IEC 61140:2016 RLV © 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 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 activities, IEC publishes International Standards, Technical Specifications, Technical 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, governmental 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 agreements 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 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 undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible 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 committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 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 patent rights. IEC shall not be uploads/Management/international-standard-protection-against-electric-shock-common-aspects-for-installations-and-equipment.pdf