1、BSI Standards PublicationSafety of transformers, reactors, power supply units and combinations thereofPart 2-26: Particular requirements and tests for transformers and power supply units for saving energy and other purposesBS EN 61558-2-26:2013National forewordThis British Standard is the UK impleme
2、ntation of EN 61558-2-26:2013. It isidentical to IEC 61558-2-26:2013.The UK participation in its preparation was entrusted to TechnicalCommittee PEL/96, Small transformers.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purpo
3、rt to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 79864 1ICS 29.180 Compliance with a British Standard cannot confer immunity fromlegal obligations.Th
4、is British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2013.Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 61558-2-26:2013EUROPEAN STANDARD EN 61558-2-26 NORME EUROPENNE EUROPISCHE NORM September 2013 CENELEC Euro
5、pean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worl
6、dwide for CENELEC members. Ref. No. EN 61558-2-26:2013 E ICS 29.180 English version Safety of transformers, reactors, power supply units and combinations thereof - Part 2-26: Particular requirements and tests for transformers and power supply units for saving energy and other purposes (IEC 61558-2-2
7、6:2013) Scurit des transformateurs, bobines dinductance, blocs dalimentation et des combinaisons de ces lments - Partie 2-26: Rgles particulires et essais pour les transformateurs et les blocs dalimentation entirement destins lconomie dnergie et dautres fins (CEI 61558-2-26:2013) Sicherheit von Tran
8、sformatoren, Drosseln, Netzgerten und deren Kombinationen - Teil 2-26: Besondere Anforderungen und Prfungen fr Transformatoren und Netzgerte zur Energieeinsparung sowie fr andere Zwecke (IEC 61558-2-26:2013) This European Standard was approved by CENELEC on 2013-08-14. CENELEC members are bound to c
9、omply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENE
10、LEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
11、 has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
12、 Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 61558-2-26:2013 - 2 - Foreword The text of document 96/400/FDIS, future edition 1 of IEC 61558-2-26, prepared by IEC TC 96 “Tra
13、nsformers, reactors, power supply units and combinations thereof“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61558-2-26:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical nati
14、onal standard or by endorsement (dop) 2014-05-14 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-08-14 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN sh
15、all not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 61
16、558-2-26:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60076 series NOTE Harmonised in EN 60079 series. IEC 61558-2-1 NOTE Harmonised as EN 61558-2-1. IEC
17、61558-2-4 NOTE Harmonised as EN 61558-2-4. IEC 61558-2-6 NOTE Harmonised as EN 61558-2-6. BS EN 61558-2-26:2013- 3 - EN 61558-2-26:2013 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part,
18、 are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modi
19、fied by common modifications, indicated by (mod), the relevant EN/HD applies. Addition to the Annex ZA of EN 61558-1:2005: Publication Year Title EN/HD Year IEC 61558-1 + corr. March + corr. March + corr. April 2005 2008 2010 2011 Safety of power transformers, power supplies, reactors and similar pr
20、oducts - Part 1: General requirements and tests EN 61558-1 + corr. August 2005 2006 IEC 61558-2-13 - Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-13: Particular requirements and tests for auto transformers and power supply units
21、 incorporating auto transformers EN 61558-2-13 - IEC 61558-2-14 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-14: Particular requirements and test for variable transformers and power supply units incorporating variable transformers EN 61558-2-14 - IEC 61558
22、-2-16 - Safety of transformers, reactors, power supply units and similar products for voltages up to 1 100 V - Part 2-16: Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units EN 61558-2-16 - BS EN 61558-2-26:2013 2 61558-2-26 IEC:20
23、13 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references . 6 3 Terms and definitions . 7 4 General requirements . 8 5 General notes on test . 8 6 Ratings . 9 7 Classification 9 8 Marking and other information 9 9 Protection against electric shock 10 10 Change of input voltage setting 11 11 Output
24、 voltage and output current under load . 11 12 No-load output voltage . 12 13 Short-circuit voltage . 12 14 Heating. 12 15 Short circuit and overload protection 13 16 Mechanical strength . 13 17 Protection against harmful ingress of dust, solid objects and moisture 13 18 Insulation resistance, diele
25、ctric strength and leakage current . 13 19 Construction . 13 20 Components . 15 21 Internal wiring . 15 22 Supply connection and other external flexible cables or cords 15 23 Terminals for external conductors . 15 24 Provisions for protective earthing . 15 25 Screws and connections . 15 26 Creepage
26、distances, clearances and distances through insulation 15 27 Resistance to heat, fire and tracking . 15 28 Resistance to rusting 15 Annexes . 16 Annex B (normative) Testing a series of transformers 16 Annex L (normative) Routine tests (production test) . 16 Annex AA (informative) Saving energy . 17
27、Annex BB (informative) Incorporated transformers . 18 Bibliography 19 Table 101 Output voltage difference 12 BS EN 61558-2-26:201361558-2-26 IEC:2013 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINATIONS THEREOF Part 2-26: Particular requ
28、irements and tests for transformers and power supply units all for saving energy and other purposes FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The objec
29、t 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 Specification
30、s (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 liaisin
31、g 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,
32、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
33、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 Com
34、mittees 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 pro
35、vide 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 la
36、test 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, wh
37、ether 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
38、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 6
39、1558-2-26 has been prepared by IEC technical committee 96: Transformers, reactors, power supply units and combinations thereof. The text of this standard is based on the following documents: FDIS Report on voting 96/400/FDIS 96/404/RVD Full information on the voting for the approval of this standard
40、 can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. BS EN 61558-2-26:2013 4 61558-2-26 IEC:2013 This part is intended to be used in conjunction with the latest edition of IEC 61558-1 and its amendmen
41、ts. 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 publication into the IEC standard: Particular requirements and tests for transformers and power supply units all for saving energy and othe
42、r purposes. A list of all parts of the IEC 61558 series, under the general title: Safety of transformers, reactors, power supply units and combination thereof, can be found on the IEC website. Future standards in this series will carry the new general title as cited above. Titles of existing standar
43、ds 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 part 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 acc
44、ordingly. In this part the following print types are used: requirements proper: in roman type; test specifications: in italic type; 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 thos
45、e in Part 1 are numbered starting from 101; supplementary annexes are entitled AA, BB, etc. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific p
46、ublication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. NOTE The 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, am
47、ended or revised IEC publication in which to make products in accordance with the new requirements and to equip them 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
48、 from the date of publication. BS EN 61558-2-26:201361558-2-26 IEC:2013 5 SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINATIONS THEREOF Part 2-26: Particular requirements and tests for transformers and power supply units all for saving energy and other purposes 1 Scope Replacement: T
49、his part of IEC 61558 deals with the safety of transformers, power supply units and switch mode power supply units all for saving energy and other purposes in electrical installations by adjusting the output voltage and/or other electrical characteristics on the output circuits without interruption affected by the transformers, power supply unit and switch mode power supply unit. NOTE 1 Safety includes electrical, thermal and mechanicals aspects. The saving of energy is obtained by volt
