1、 IEC 62949 Edition 1.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Particular safety requirements for equipment to be connected to information and communication networks Exigences de scurit spcifiques pour les quipements destins tre connects aux rseaux dinformation et de communication IEC 62
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19、ous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62949 Edition 1.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Particular safety requirements for equipment to be connected to information and communication networks Exig
20、ences de scurit spcifiques pour les quipements destins tre connects aux rseaux dinformation et de communication INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.160; 35.020 ISBN 978-2-8322-3790-8 Registered trademark of the International Electrotechnical Co
21、mmission 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. colour inside 2 IEC 62949:2017 IEC 2017 CONTEN
22、TS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 Safety requirements and compliance criteria 8 4.1 General . 8 4.2 Interconnection of equipment 9 4.2.1 General requirements 9 4.2.2 Types of interconnection circuits 9 4.3 ES1 circuits 9 4.3.1 Limits 9 4.
23、3.2 Protection against contact with ES1 circuits . 9 4.4 ES2 circuits 9 4.4.1 Limits 9 4.4.2 Protection against contact with ES2 circuits . 9 4.5 ES3 circuits 9 4.5.1 Limits 9 4.5.2 Protection against contact with ES3 circuits . 9 4.6 Protection from hazards in the equipment for persons servicing IC
24、T networks, and users of other equipment connected to the network 10 4.6.1 Protection from ES3. 10 4.6.2 Separation of the ICT network from earth 10 4.6.3 Touch current to ICT networks . 10 4.6.4 Summation of touch currents from ICT networks 10 4.7 Protection of equipment users from overvoltages on
25、ICT networks 10 4.8 Protection of the wiring system of an ICT network from overheating 10 Annex A (informative) Relevant safety standards for the application of this document 11 Annex B (informative) ICT network voltages and signals 12 B.1 General . 12 B.2 Contact with operating voltages on ICT netw
26、orks 13 Annex C (informative) Comparison of terms and definitions introduced in this document 15 C.1 General . 15 C.2 Comparison of terms and definitions . 15 Annex D (informative) Overview of networks 22 Bibliography 23 Figure B.1 Current limit curves . 13 Figure D.1 Overview of network . 22 IEC 62
27、949:2017 IEC 2017 3 Table C.1 Comparison of terms and definitions in IEC 60950-1:2005 and IEC 62368-1:2014 . 16 Table C.2 Comparison of terms and definitions in IEC 62151:2000 and IEC 62368- 1:2014 19 4 IEC 62949:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ PARTICULAR SAFETY REQUIREMENT
28、S FOR EQUIPMENT TO BE CONNECTED TO INFORMATION AND COMMUNICATION NETWORKS 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 int
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38、rect 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 62949 has been prepared by
39、 IEC technical committee 108: Safety of electronic equipment within the field of audio/video, information technology and communication technology. The text of this standard is based on the following documents: FDIS Report on voting 108/664/FDIS 108/676/RVD Full information on the voting for the appr
40、oval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. In this standard, the following print types are used: requirements proper and normative annexes: in roman type; IEC
41、 62949:2017 IEC 2017 5 compliance statements and test specifications: in italic type; notes and other informative matter: in smaller roman type; normative conditions within tables: in smaller roman type; Terms that are defined in Clause 3: bold. The committee has decided that the contents of this do
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43、 cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 IEC 62949:2017 IEC 2017 INTRODUCTION This document is applicable for products inten
44、ded to be connected as communication terminal to an ICT network not covered by the scope of IEC 62368-1. It is to be used in conjunction with other product safety standards, examples of which are listed in Annex A. This document, in accordance with the principles of safety given in the introduction
45、of IEC 62368-1, covers the requirements and compliance criteria under three headings. Protection of equipment users from hazards in the equipment. The users are considered to be protected from hazards in the equipment if the equipment complies with a relevant safety standard, for example one of thos
46、e listed in Annex A, but compliance with those standards is not part of this document. NOTE An equipment user could be an ordinary person or an instructed person. Protection of skilled persons or instructed persons working on an ICT network and other users of an ICT network, from hazardous condition
47、s on an ICT network resulting from the connection of the equipment. Protection of equipment users from voltages on an ICT network. Upper limits for ICT networks signals have been defined. They include also telephone ringing signals which have been defined taking into account voltages commonly used i
48、n the different networks. The electrical hazard criteria have been chosen to be in accordance with IEC TS 60479 (all parts). Test levels used for the equipment take account of the possibility that overvoltages may occur on ICT networks. Special consideration has been given to equipment parts expecte
49、d to be held or touched during normal use, e.g. telephone handsets. It is recognised that in high overvoltages risk areas, requirements of this document may not be sufficient. Additional protective devices, not covered by this document, may be installed in the ICT networks to better meet extreme conditions. A comparison of terms introduced in this document with existing IEC standards is given in Annex C.
