1、 IEC 61558-2-8Edition 2.0 2010-06INTERNATIONAL STANDARD NORME INTERNATIONALESafety of transformers, reactors, power supply units and combinations thereof Part 2-8: Particular requirements and tests for transformers and power supply units for bells and chimes Scurit des transformateurs, bobines dindu
2、ctance, blocs dalimentation et des combinaisons de ces lments Partie 2-8: Rgles particulires et essais pour les transformateurs et blocs dalimentation pour sonneries et carillons IEC61558-2-8:2010 GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURITTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright
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17、2 919 02 11 Fax: +41 22 919 03 00 IEC 61558-2-8Edition 2.0 2010-06INTERNATIONAL STANDARD NORME INTERNATIONALESafety of transformers, reactors, power supply units and combinations thereof Part 2-8: Particular requirements and tests for transformers and power supply units for bells and chimes Scurit d
18、es transformateurs, bobines dinductance, blocs dalimentation et des combinaisons de ces lments Partie 2-8: Rgles particulires et essais pour les transformateurs et blocs dalimentation pour sonneries et carillons INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE NIC
19、S 29.180 PRICE CODECODE PRIXISBN 978-2-88912-036-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT 2 61558-2-8 IEC:2010 CONTENTS FOREWORD.3 1 Scope.5 2 Normative
20、references6 3 Terms and definitions .6 4 General requirements .6 5 General notes on tests6 6 Ratings.6 7 Classification 7 8 Marking and other information.7 9 Protection against electric shock.8 10 Change of input voltage setting .8 11 Output voltage and output current under load 8 12 No-load output
21、voltage9 13 Short-circuit voltage9 14 Heatingss .9 15 Short-circuit and overload protection .10 16 Mechanical strength10 17 Protection against harmful ingress of dust, solid objects and moisture.10 18 Insulation resistance, dielectric strength and leakage current 10 19 Construction .10 20 Components
22、 .12 21 Internal wiring.12 22 Supply connection and other external flexible cables or cords12 23 Terminals for external conductors .12 24 Provisions for protective earthing 12 25 Screws and connections .13 26 Creepage distances, clearances and distances through insulation .13 27 Resistance to heat,
23、fire and tracking .13 28 Resistance to rusting 13 Annexes14 Annex F Requirements for manually operated switches which are parts of transformer assemblies14 Bibliography14 61558-2-8 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINA
24、TIONS THEREOF Part 2-8: Particular requirements and tests for transformers and power supply units for bells and chimes FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Com
25、mittees). 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 Avai
26、lable 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 or
27、ganizations 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 technica
28、l 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 N
29、ational 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 uniformit
30、y, 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
31、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 th
32、at 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 na
33、ture 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 referenc
34、ed 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. Internati
35、onal standard IEC 61558-2-8 has been prepared by IEC technical committee 96: Transformers, reactors, power supply units and combinations thereof. This second edition cancels and replaces the first edition published in 1998. It constitutes a technical revision. The main changes consist of updating th
36、is part in accordance with IEC 61558-1:2005. 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 61558-2-8 IEC:2010 The text of this standard is
37、 based on the following documents: FDIS Report on voting 96/354/FDIS 96/361/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 with the ISO/IEC Directives, Part 2. Thi
38、s 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 publication into the IEC standard: Part
39、icular requirements and tests for transformers and power supply units for bell and chime. A list of all parts of the IEC 61558 series, under the general title: Safety of transformers, reactors, power supply units and combinations thereof, can be found on the IEC website. Future standards in this ser
40、ies 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 part, that subclause applies as far as is reasonable. Where this part states “addition“, “
41、modification“ or “replacement“, the relevant text of Part 1 is to be adopted accordingly. In this part, the following print types are used: requirements proper: in roman type; test specifications: in italic type; explanatory matters: in smaller roman type. In the text of this part, the words in bold
42、 are defined in Clause 3. Subclauses additional to those 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:
43、/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 The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a
44、 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 for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be ado
45、pted for implementation nationally not earlier than 12 months from the date of publication. 61558-2-8 IEC:2010 5 SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINATIONS THEREOF Part 2-8: Particular requirements and tests for transformers and power supply units for bells and chimes 1 Sc
46、ope Replacement: This part of IEC 61558 deals with the safety of bell and chime transformers and power supply units incorporating bell and chime transformers. Transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal and mechanical a
47、spects. Unless otherwise specified, from here onward, the term transformer covers bell and chime transformers and power supply units incorporating bell and chime transformers. This part is applicable to stationary, single-phase, air-cooled (natural or forced) independent or associated dry-type trans
48、formers. The windings may be encapsulated or non-encapsulated. This standard is applicable to transformers and power supply (linear). This standard used in combination with part 2-16 for switch mode power supply (SMPS) units is also applicable to power supplies with internal operating frequencies hi
49、gher than 500 Hz. Where the two requirements are in conflict, the most severe takes precedence. The rated supply voltage does not exceed 250 V a.c., and the rated supply frequency and does not exceed 500 Hz. This standard is applicable to transformers and linear power supply units with internal operating frequency not exceeding 500 Hz. The rated output shall not exceed 100 VA. The no-load output voltage does not e
