1、 IEC 61558-2-4Edition 2.0 2009-02INTERNATIONAL STANDARD NORME INTERNATIONALESafety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolatin
2、g transformers Scurit des transformateurs, bobines dinductance, blocs dalimentation et produits analogues pour des tensions dalimentation jusqu 1 100 V Partie 2-4: Rgles particulires et essais pour les transformateurs de sparation des circuits et les blocs dalimentation incorporant des transformateu
3、rs de sparation des circuits IEC61558-2-4:2009 GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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17、 des commentaires sur cette publication ou si vous avez 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 61558-2-4Edition 2.0 2009-02INTERNATIONAL STANDARD NORME INTERNATIONALESafety of transformers, reactors, power
18、supply units and similar products for supply voltages up to 1 100 V Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers Scurit des transformateurs, bobines dinductance, blocs dalimentation et produits analogues pour des t
19、ensions dalimentation jusqu 1 100 V Partie 2-4: Rgles particulires et essais pour les transformateurs de sparation des circuits et les blocs dalimentation incorporant des transformateurs de sparation des circuits INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE NI
20、CS 29.180 PRICE CODECODE PRIXISBN 2-8318-1028-7GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61558-2-4 IEC:2009 CONTENTS FOREWORD.3 1 Scope.5 2 Normative refe
21、rences .6 3 Terms and definitions .6 4 General requirements.6 5 General notes on tests .6 6 Ratings.6 7 Classification7 8 Marking and other information 7 9 Protection against electric shock 7 10 Change of input voltage setting 7 11 Output voltage and output current under load .7 12 No-load output vo
22、ltage .8 13 Short-circuit voltage .8 14 Heating 9 15 Short-circuit and overload protection 9 16 Mechanical strength .9 17 Protection against harmful ingress of dust, solid objects and moisture9 18 Insulation resistance, dielectric strength and leakage current .9 19 Construction.9 20 Components .11 2
23、1 Internal wiring.11 22 Supply connection and other external flexible cable or cords 11 23 Terminals for external conductors.11 24 Provisions for protective earthing .11 25 Screws and connections.12 26 Creepage distances, clearances and distances through insulation12 27 Resistance to heat, fire and
24、tracking.12 28 Resistance to rusting12 Annexes .13 Annex C Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group II (400 CTI 600) 13 Annex D Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group I (CTI 600)13 Annex R E
25、xplanations of the application of 4.2 of IEC 60664-1:2007 (see IEC 61558-1 Subclause 26.2)13 Bibliography14 Table 101 Output voltage difference 8 61558-2-4 IEC:2009 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND SIMILAR PRODUCTS FOR SUPPLY VOLT
26、AGES UP TO 1 100 V Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnic
27、al 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, T
28、echnical 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, gover
29、nmental 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 o
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31、l 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
32、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 i
33、ndicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall att
34、ach 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 fee
35、s) 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 publicati
36、on. 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 61558-2-4 has been prepared by IEC technical committee 96: T
37、ransformers, reactors, power supply units and similar products for low voltages up to 1 100 V. This second edition cancels and replaces the first edition published in 1997. It constitutes a technical revision. The main changes consist of updating this part in accordance with Part 1 (2005), and incre
38、asing the supply voltages up to 1 100 V to be in line with the standards of TC 14. This part has the status of a group safety publication in accordance with IEC Guide 104 (1997): The preparation of safety publications and the use of basic safety publications and group safety publications. 4 61558-2-
39、4 IEC:2009 The text of this standard is based on the following documents: FDIS Report on voting 96/316/FDIS 96/321/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance w
40、ith the ISO/IEC Directives, Part 2. This part is intended to be used in conjunction with the latest edition of IEC 61558-1 and its amendments. It is based on the second edition (2005) of that standard. This part supplements or modifies the corresponding clauses in IEC 61558-1, so as to convert that
41、publication into the IEC standard: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers. A list of all parts of the IEC 61558 series can be found on the IEC website under the title: Safety of transformers, reactors, power supply uni
42、ts and similar products for supply voltages up to 1 100 V. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. Where a particular subclause of Part 1 is not mentioned in this par
43、t, that subclause applies as far as is reasonable. Where this part states “addition“, “modification“ or “replacement“, the relevant text of Part 1 is to be adapted accordingly. In this part, the following print types are used: requirements proper: in roman type; test specifications: in italic type;
44、explanatory matter: in smaller roman type: In the text of this part, the words in bold are defined in Clause 3. Subclauses, notes, figures and tables additional to those in Part 1 are numbered starting from 101; supplementary annexes are entitled AA, BB, etc. The committee has decided that the conte
45、nts of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. NOTE T
46、he attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves
47、for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months from the date of publication. 61558-2-4 IEC:2009 5 SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND SIMILAR
48、PRODUCTS FOR SUPPLY VOLTAGES UP TO 1 100 V Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers 1 Scope Replacement: This part of IEC 61558 deals with the safety of isolating transformers for general applications and power
49、 supply units incorporating isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal and mechanical aspects. Unless otherwise specified, from here onward, the term transformer covers isolating transformers for general applications and power supply units incorporating isolating transformers
