1、BRITISH STANDARD BS EN 61558-1:1998 Incorporating Amendments Nos. 1 and 2 and Corrigendum No. 1 Safety of power transformers, power supply units and similar Part 1: General requirements The European Standard EN 61558-1:1997, with the incorporation of amendments A1:1998 and A11:2003, has the status o
2、f a British Standard ICS 29.180 BS EN 61558-1:1998 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 January 1998 BSI 24 May 2004 ISBN 0 580 28518 9 Nation
3、al foreword This British Standard is the official English language version of EN 61558-1:1997, including amendments A1:1998 and A11:2003. It is derived by CENELEC from IEC 61558-1:1997, including amendment 1:1998. Corrigendum April 2003 made changes to the supersession details and withdrawal date in
4、 the EN foreword. The BS EN 61558 series of standards will ultimately supersede BS 3535-1 and BS 3535- 2. Until that time arrives, these latter standards are only to be used for equipment not covered by the BS EN 61558 series. The CENELEC common modifications have been implemented at the appropriate
5、 places in the text. The start and finish of each common modification is indicated in the text by tags . Where a common modification has been introduced by amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC amendment A11 are indicated b
6、y . The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CENELEC text carry the number of the CENELEC amendments. For example, text altered by CENELEC amendment A1 is indicated by !“. The UK participation in its preparation w
7、as entrusted to Technical Committee PEL/96, Small transformers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred t
8、o in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions
9、of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the inte
10、rpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 133 and a back cover. The BSI copyright date dis
11、played in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 10136 August 1998 See national foreword 14659 31 October 2003 See National foreword and implements Corrigendum April 2003 15086 Corrigendum No. 1 24 May 2004 Correction of
12、National foreword wordingEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61558-1 November 1997 + A1 April 1998 + A11 April 2003 ICS 29.180 Partly supersedes EN 60742:1995 English version Safety of power transformers, power supply units and similar Part 1: General requirements and tests (include
13、s amendments A1:2002 and A11:2003) (IEC 61558-1:1997 + A1:1998, modified) Scurit des transformateurs, blocs dalimentation et analogues Partie 1: Rgles gnrales et essais (Inclut les amendements A1:1998 et A11:2003) (CEI 61558-1:1997 + A1:1998, modifie) Sicherheit von Transformatoren, Netzgerten und d
14、ergleichen Teil1:AllgemeineAnforderungenundPrfungen (Enthlt nderungen A1:1998 und A11:2003) (IEC 61558-1:1997 + A1:1998, modifiziert) This European Standard was approved by CENELEC on 1997-07-01. Amendment A1 was approved by CENELEC on 1998-04-01, Amendment A11 was approved by CENELEC on 2002-11-01.
15、 CENELEC members are bound to comply 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
16、 on application to the Central Secretariat 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 Central
17、Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain,
18、Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in
19、 any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61558-1:1997 + A1:1998 + A11:2003 EEN 61558-1:1997 ISB 13 Octoreb 3002 2 Foreword The text of document 96/47/FDIS, future edition 1 of IEC 61558-1, prepared by IEC TC 96, small power transformers, reactors and power suppl
20、y units and special transformers, reactors and power supply units: safety requirements, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-1 on 1997-07-01, together with common modifications prepared by the CENELEC BTTF 64-1, Isolating and safety isolating transfo
21、rmers. This European Standard Together with the parts 2-4, 2-5, 2-6, 2-7, 2-8 and 2-9 of EN 61558 supersedes EN 60742:1995. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this st
22、andard, Annex A to K, Annex ZA and ZB are normative and annexes L to V are informative. Annex ZA and ZB have been added by CENELEC. This part 1 is to be used in conjunction with the appropriate part 2, which contains clauses that supplement or modify the corresponding clauses in this part 1, to prov
23、ide the relevant particular requirements for each type of product. Foreword to amendment A1 The text of document 96/106/FDIS, future amendment 1 to IEC 61558-1:1997, prepared by IEC TC 96, Small power transformers, reactors and power supply units and special transformers, reactors and power supply u
24、nits: safety requirements, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 61558-1:1997 on 1998-04-01. The following dates were fixed: Foreword to amendment A11 This amendment was prepared by the Technical Committee CENELEC TC 96, Small power transfor
25、mers, reactors and power supply units: Safety requirements. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1998-02-01 latest date by which the national standards conflicting
26、with the EN have to be withdrawn (dow) 2005-12-01 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 200
27、1-01-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-11-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2005-12-01-855168991:1.A+7991:C
28、EI 1 3 CONTENTS Page INTRODUCTION5 Clause 1 Scope6 2 Normative references.7 3 Definitions .10 4 General requirements 17 5 General notes on tests.18 6 Ratings20 7 Classification.20 8 Marking and other information21 9 Protection against accessibility to hazardous live parts.26 10 Change of input volta
29、ge setting27 11 Output voltage and output current under load.27 12 No-load output voltage.28 13 Short-circuit voltage.28 14 Heating28 15 Short circuit and overload protection 34 16 Mechanical strength.38 17 Protection against harmful ingress of dust, solid objects and moisture39 18 Insulation resist
30、ance and dielectric strength .42 19 Construction 44 20 Components 51 21 Internal wiring56 22 Supply connection and other external flexible cables or cords.57 23 Terminals for external conductors 63 24 Provision for protective earthing.65 25 Screws and connections 66 26 Creepage distances, clearances
31、 and distances through insulation69 27 Resistance to heat, abnormal heat, fire and tracking 76 28 Resistance to rusting .78 Page3 EN615581:1997-855168991:1.A+7991:CEI 1 4 Clause Page Figures 1 to 7 79-84 Annexes A Measurement of creepage distances and clearances . 85 B Testing of a series of transfo
32、rmers 91 C Creepage distances and clearances Material group II . 93 D Creepage distances and clearances Material group I 96 E Glow-wire test. 99 F Requirements for switches complying with IEC 61058 100 G Tracking test. 102 H Electronic circuits 103 J Measuring network for touch-currents 108 K Insula
33、ted winding wires for use as multiple layer insulation 109 L Routine tests (production tests) . 111 M Examples to be used as a guide for 19.1 . 113 N Examples of points of application of test voltages 116 P Examples of points of measurement of creepage distances and clearances . 118 Q Explanation of
34、 IP numbers for degrees of protection . 120 R Explanations of the application of 4.1.1.2.1 of IEC 60664-1 122 S Bibliography 123 T Index of definitions 124 U List of parts 2 (forthcoming publications). 125 V Symbols to be used for thermal cut-outs 126 ZA Special national conditions 127 ZB Normative
35、references to international publications with their corresponding European publications 129 Page4 EN615581:1997-855168991:1.A+7991:CEI 1 5 IINTRODUCTION In general, this International Standard covers safety requirements for transformers. When elaborating this standard, the requirements of IEC 60364
36、were taken into account as far as possible, so that a transformer may be installed in accordance with these wiring rules. However, national wiring rules may differ. This standard recognizes the internationally accepted level of protection against hazards such as electrical, mechanical and fire of tr
37、ansformers when operated as in normal use, taking into account the manufacturers instructions. It also covers abnormal situations which can be expected in practice. A transformer which complies with this standard will not necessarily be judged to comply with the safety principles of the standard if
38、when examined and tested, it is found to have other features which impair the level of safety covered by these requirements. A transformer employing materials or having forms of construction differing from those detailed in the requirements of this standard may be examined and tested according to th
39、e intent of the requirement, and if found to be substantially equivalent, may be judged to comply with the safety principles of this standard. Standards dealing with non-safety aspects of transformers are: CISPR 11 and CISPR 14 concerning radio interference suppression; IEC 61000-3-2 and IEC 61000-3
40、-3 concerning electromagnetic compatibility. The object of part 1 of IEC 61558 is to provide a set of requirements and tests which are considered to be generally applicable to most types of transformers, and which can be called up as required by the relevant part 2 of IEC 61558. Part 1 is thus not t
41、o be regarded as a specification by itself for any type of transformer, and its provisions apply only to particular types of transformers to the extent determined by the appropriate part 2. The part 2 series, in referring to any of the clauses of part 1, specify the extent to which that part 2 is ap
42、plicable and the order in which the tests are to be performed; they also include additional requirements as necessary. Each part 2 is self-contained and therefore does not contain references to other part 2. Where the requirements of any of the clauses of part 1 are referred to in a part 2 by the ph
43、rase “This clause of part 1 is applicable“, this phrase is to be interpreted as meaning that all requirements of that clause of part 1 apply, except any which are clearly inapplicable to the particular type of transformer covered by that part 2. Each part 2 of IEC 61558 (containing requirements for
44、a particular type of transformer) is published separately for ease of revision, and additional parts 2 will be added as and when a need for them is recognized. Page5 EN615581:1997-855168991:1.A+7991:CEI 1 6 SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR Part 1: General requirements and
45、 tests 1 Scope 1.1 This International Standard deals with all aspects of safety (such as electrical, thermal and mechanical) of: a) Stationary or portable, single-phase or polyphase, air-cooled (natural or forced) isolating and safety isolating transformers, associated or otherwise, having a rated s
46、upply voltage not exceeding 1 000 V a.c. and rated frequency not exceeding 1 MHz, the rated output not exceeding the following values. NOTE 1 For higher frequencies, this standard may be used as a guidance document. For isolating transformers: 25 kVA for single-phase transformers; 40 kVA for polypha
47、se transformers. For safety isolating transformers: 10 kVA for single-phase transformers; 16 kVA for polyphase transformers. The no-load output voltage and rated output voltage do not exceed: for isolating transformers 500 V a.c. or 708 V ripple free d.c. NOTE 2 For isolating transformers, the no-lo
48、ad rated output voltage may be up to 1 000 V a.c. or 1 415 V ripple free d.c. to be in accordance with the national wiring rules or for special purposes. for safety isolating transformers 50 V a.c. r.m.s. and/or 120 V ripple free d.c. between conductors or between any conductor and earth. NOTE 3 Iso
49、lating and safety isolating transformers are used where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification (for example toys, bells, portable tools, handlamps). Rated values for each type of transformer are indicated in the relevant part 2. b) Stationary or portable, single-phase or polyphase, air-cooled (natural or forced) separating transf
