1、BRITISH STANDARDBS EN Incorporating corrigendumAugust 2006 Safety of power transformers, power supplies, reactors and similar products Part 1: General requirements and testsICS 29.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3
2、g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g5861558-1:2005+A1:2009National forewordThis British Standard is the UK implementation of EN 61558-1:2005+A1:2009, incorporating corrigendum August 2006. It is identical with IEC 61558-1:2005 incorporating amendment 1:20
3、09. It supersedes BS EN 61558-1:2005 which is withdrawn.The start and finish of text introduced or altered by corrigendum is indicated in the text by tags . Tags altered by CEN corrigendum August 2006 is indicated in the text by .The start and finish of text introduced or altered by amendment is ind
4、icated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee PEL/96, Small transformers.A list of organizations repre
5、sented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 61558
6、-1:2005+A1:2009This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2009Amendments/corrigenda issued since publicationAmd. No. Date Comments 16909Corrigendum No. 128 February 2007 Implementation of CEN corrigendum August 200631 O
7、ctober 2009 Implementation of IEC amendment 1:2009 with CENELEC endorsement A1:2009ISBN 978 0 580 68982 6EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM March 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr
8、 Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61558-1:2005 E ICS 29.180 Supersedes EN 61558-1:1997 + A1:1998 + A11:2003English version Sa
9、fety of power transformers, power supplies, reactors and similar products Part 1: General requirements and tests (IEC 61558-1:2005) Scurit des transformateurs, alimentations, bobines dinductance et produits analogues Partie 1: Exigences gnrales et essais (CEI 61558-1:2005) Sicherheit von Transformat
10、oren, Netzgerten, Drosseln und dergleichen Teil 1: Allgemeine Anforderungen und Prfungen (IEC 61558-1:2005) This European Standard was approved by CENELEC on 2005-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europ
11、ean 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (Engl
12、ish, 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 Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria,
13、Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Incorporating corrigendum August 2006
14、EN 61558-1:2005+A1 Foreword The text of document 96/224/FDIS, future edition 2 of IEC 61558-1, prepared by IEC TC 96, Small power transformers, reactors, power supply units and similar products, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-1 on 2005-10-01. T
15、his European Standard supersedes EN 61558-1:1997 + corrigendum April 2003 + A1:1998 + A11:2003. The changes with respect to EN 61558-1:1997 were necessitated by the introduction of new technology and implementation of requirements from equipment committees. The following dates were fixed: latest dat
16、e by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) However, individual countries may wish to consider its applicat
17、ion, to the extent reasonable, to transformers not mentioned in the parts 2, and to transformers designed on new principles. NOTE Annex U contains the optional twsystem (marking, requirements and tests). In this standard, the following print types are used: requirements proper: in roman type; test s
18、pecifications: in italic type; explanatory matter: in smaller roman type. In the text of the standard, the words in bold are defined in Clause 3. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61558-1:2005 was approved by CENELEC as a European Sta
19、ndard without any modification. _ EN 61558-1:2005 This European Standard replaces EN 61558-1:1997 and its amendments. However, EN 61558-1:1997 remains valid until all the parts 2 that are used in conjunction with it have been withdrawn. No date of withdrawal of conflicting national standards (dow) h
20、as therefore been fixed. However, when Part 1 is used for products not covered by a part 2, EN 61558-1:1997 is not to be used after 2008-10-01. BS EN 61558-1:2005+A1:2009 2 Foreword to amendment A1 The text of document 96/314/FDIS, future amendment 1 to IEC 61558-1:2005, prepared by IEC TC 96, Trans
21、formers, reactors, power supply units and similar products for low voltage up to 1 100 V, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 61558-1:2005 on 2009-03-01. The following dates were fixed: latest date by which the amendment has to be implemen
22、ted at national level by publication of an identical national standard or by endorsement (dop) 2009-12-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2012-03-01 _ Endorsement notice The text of amendment 1:2009 to the International Standard I
23、EC 61558-1:2005 was approved by CENELEC as an amendment to the European Standard without any modification. _ BS EN 61558-1:2005+A1:2009 3 EN 61558-1:2005 This page deliberately set blankBS EN 61558-1:2005+A1:2009 4 EN 61558-1:2005 EN 61558-1:2005 CONTENTS INTRODUCTION 8 1 Scope 11 2 Normative refere
24、nces .13 3 4 5 6 7 Classification31 8 Marking and other information 33 9 Protection against electric shock 38 10 Change of input voltage setting 41 11 Output voltage and output current under load .42 12 No-load output voltage .42 13 Short-circuit voltage .43 14 Heating 43 15 Short circuit and overlo
25、ad protection.48 16 Mechanical strength .52 17 Protection against harmful ingress of dust, solid objects and moisture.55 18 Insulation resistance, dielectric strength and leakage current59 19 Construction.63 20 Components.70 21 Internal wiring 76 22 Supply connection and other external flexible cabl
26、es or cords .76 23 Terminals for external conductors.82 24 Provisions for protective earthing84 25 Screws and connections.85 26 Creepage distances, clearances and distances through insulation 88 27 Resistance to heat, fire and tracking.97 28 Resistance to rusting101 Annex A (normative) Measurement o
27、f creepage distances and clearances .109 Annex B (normative) Testing a series of transformers 113 Annex C (normative) Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group II (400 CTI 600) 115 Annex D (normative) Creepage distances (cr), clearances (cl) and d
28、istances through insulation (dti) Material group I (CTI 600) 118 Annex E (normative) Glow-wire test .121 Annex F (normative) Requirements for manually operated switches which are parts of transformers assembly .122 Annex G (normative) Tracking test.125 Annex H (normative) Electronic circuits126 Anne
29、x I (void) .130 Annex J (normative) Measuring network for touch-currents 131 Terms and definitions .16 General requirements.29 General notes on tests .29 Ratings 3111 BS EN 61558-1:2005+A1:2009 5 EN 61558-1:2005 Annex K (normative) Insulated winding wires for use as multiple layer insulation 132 Ann
30、ex L (normative) Routine tests (production tests) .134 Annex M (informative) Examples to be used as a guide for 19.1 .136 Annex N (informative) Examples of points of application of test voltages 139 Annex O (void) .141 Annex P (informative) Examples of points of measurement of creepage distances and
31、 clearances .142 Annex Q (informative) Explanation of IP numbers for degrees of protection 144 Annex R (normative) Explanations of the application of 4.1.1.2.1 of IEC 60664-1 (see 26.2) 146 Annex S (void)147 Annex T (void)148 Annex U (informative) Optional twmarking of transformers 149 Annex V (info
32、rmative) Symbols to be used for thermal cut-outs 158 Annex W (normative) Coated printed circuit boards 159 Annex ZA (normative) Normative references to international publications with their corresponding European publications .162 Figure 0 IEC 61558 principle9 Figure 1 Mounting box for flush-type tr
33、ansformer (see 5.10) .102 Figure 2 Standard test finger (see 9.1.2, 15.5.2 and IEC 61032, test probe B) 103 Figure 3 Test pin (see 9.2 and IEC 61032, test probe 13).104 Figure 4 Abrasion resistance test for insulating coated layers.104 Figure 5 Ball-pressure apparatus (see 27.1).105 Figure 6 Test ar
34、rangement for checking mechanical withstanding of insulating materials in thin sheet layers (see 26.3)106 Figure 7 Flexing test apparatus (see 22.9.4) 107 Figure 8 Test configuration: single-phase equipment on star TN or TT system108 Figure H.1 Example of an electronic circuit with low-power points
35、(see H.2.2) 129 Figure J.1 Measuring network for touch-current131 Figure U.1 Relation between winding temperature and endurance test duration156 Figure U.2 Assessment of claimed value of S.157 BS EN 61558-1:2005+A1:2009 6 EN 61558-1:2005 Table 1 Values of maximum temperatures in normal use 45 Table
36、2 Test temperature and testing time (in days) per cycle 47 Table 3 Maximum values of temperatures under short-circuit or overload conditions.49 Table 4 Values of T and k for fuses50 Table 5 Pull force on pins 54 Table 6 Solid-object-proof transformer test.56 Table 7 Values of insulation resistance 5
37、9 Table 8a Table of dielectric strength test voltages 60 Table 8b Limits for currents .63 Table 9 Nominal cross-sectional areas of external flexible cables or cords .78 Table 10 Pull and torque to be applied to external flexible cables or cords fixed to stationary and portable transformers.81 Table
38、11 Torque to be applied to screws and connections 86 Table 12 Torque test on glands88 Table 13 Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group IIIa (175 CTI 400).94 Table C.1 Creepage distances (cr), clearances (cl) and distances through insulation (dti
39、) Material group II (400 CTI 600) .115 Table D.1 Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group I (CTI 600) .118 Table F.1 Peak surge current of the additional load123 Table Q.1 Degrees of protection indicated by the first characteristic numeral144 Tab
40、le Q.2 Degrees of protection indicated by the second characteristic numeral 145 Table R.1 Impulse test voltage according to 4.1.1.2.1 of IEC 60664-1.146 Table U.1 Example of maximum temperatures of windings under short circuit or overload conditions and at 110 % of rated voltage for transformers sub
41、jected to an endurance test duration of 30 days and a life expectance of 10 years151 Table U.2 Theoretical test temperatures for transformers subjected to an endurance test duration of 30 days and a life expectancy of 10 years.153 BS EN 61558-1:2005+A1:2009 7 EN 61558-1:2005 INTRODUCTION This Intern
42、ational Standard covers safety requirements for transformers. Where the term transformer is used, it covers transformers, reactors and power supplies where applicable. During the development of this standard, to the extent possible, the requirements of IEC 60364 were taken into consideration, so tha
43、t a transformer may be installed in accordance with the wiring rules contained in that standard. However, national wiring rules may differ. This standard recognizes the internationally accepted levels of protection against the possible electrical, mechanical, and fire hazards caused by transformers
44、operating under normal conditions in accordance with the manufacturers instructions. It, also, covers abnormal conditions which may occur in practice. A transformer complying with this standard will not necessarily be judged to comply with the safety principles of this standard if when examined and
45、tested, it is found to have other features that impair the level of safety covered by these requirements. A transformer employing materials or having forms of construction differing from those detailed in this standard may be examined and tested according to the intent of the requirements, and if fo
46、und to be substantially equivalent, may be judged to comply with the safety principles of this standard. The standard dealing with non-safety aspects of electromagnetic compatibility (EMC) of transformers is IEC 62041: Power transformers, power supply units, reactors and similar products EMC require
47、ments. However, that standard also includes tests which may subject the transformer to conditions involving the safety aspects. The objective of Part 1 of IEC 61558 is to provide a set of requirements and tests considered to be generally applicable to most types of transformers, and which can be cal
48、led up as required by the relevant part 2 of IEC 61558. Part 1 is thus not to 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. Part 1 of IEC 61558 also contains
49、normative routine tests. Each part 2 in conjunction with Part 1 contains all the necessary requirements for the transformer being covered and does not contain references to other parts 2. For transformers with a protection index IP00 and associated transformers, it is possible to have circuits corresponding to different parts 2 within the same construction (e.g. SELV output circuit according to Part 2-6 and 230 V outpu
