1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSafety of transformers, reactors,power supply units and similarproducts for supply voltages upto 1 100 V Part 2-6: Particular requirements and tests for safety isolating transfor
2、mers and power supply units incorporating safety isolating transformersBS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSINational forewordThis British Standard is the UK implementation of EN 61558-2-6:2009. It isidentical to IEC 61
3、558-2-6:2009. It supersedes BS EN 61558-2-6:1998 whichis withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePEL/96, Small transformers.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport
4、 to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 57894 6ICS 29.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPo
5、licy and Strategy Committee on 31 January 2010Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 61558-2-6 NORME EUROPENNE EUROPISCHE
6、 NORM August 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any
7、 means reserved worldwide for CENELEC members. Ref. No. EN 61558-2-6:2009 E ICS 29.180 Supersedes EN 61558-2-6:1997English version Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isol
8、ating transformers and power supply units incorporating safety isolating transformers (IEC 61558-2-6:2009) Scurit des transformateurs, bobines dinductance, blocs dalimentation et produits analogues pour des tensions dalimentation jusqu 1 100 V - Partie 2-6: Rgles particulires et essais pour les tran
9、sformateurs de scurit et les blocs dalimentation incorporant des transformateurs de scurit (CEI 61558-2-6:2009) Sicherheit von Transformatoren, Drosseln, Netzgerten und dergleichen fr Versorgungsspannungen bis 1 100 V - Teil 2-6: Besondere Anforderungen und Prfungen an Sicherheitstransformatoren und
10、 Netzgerte, die Sicherheitstransformatoren enthalten (IEC 61558-2-6:2009) This European Standard was approved by CENELEC on 2009-07-01. 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 natio
11、nal 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 (English, French, German). A version in
12、 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, Belgium, Bulgaria, Cyprus, the Cze
13、ch Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61558-2-6:2009Licensed Copy: Wang
14、Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSIEN 61558-2-6:2009 2 Foreword The text of document 96/317/FDIS, future edition 2 of IEC 61558-2-6, prepared by IEC TC 96, Transformers, reactors, power supply units and similar products for low voltage up to 1 100 V, was s
15、ubmitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-2-6 on 2009-07-01. This European Standard supersedes EN 61558-2-6:1997. The main changes consist of updating EN 61558-2-6:1997, in accordance with EN 61558-1:2005, and increasing the supply voltages up to 1 100 V to be
16、 in line with the standards of TC 14. 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) 2009-10-01 latest date by which the national standards conflicting with the EN have to be
17、 withdrawn (dow) 2012-07-01 This standard is to be used in conjunction with EN 61558-1 and its amendments. It is based on EN 61558-1:2005. This Part 2-6 supplements or modifies the corresponding clauses in EN 61558-1, so as to convert that publication into the European Standard: Particular requireme
18、nts and tests for safety isolating transformers and power supply units incorporating safety isolating transformers. When a particular subclause of Part 1 is not mentioned in this part, that subclause applies as far as is reasonable. Where this standard states “addition“, “modification“ or “replaceme
19、nt“, 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; explanatory matter: in smaller roman type. In the text of this standard, the words in bold are defined in Clause 3
20、. Subclauses, notes, figures and tables additional to those in Part 1 are numbered starting from 101; supplementary annexes are entitled AA, BB, etc. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61558-2-6:2009 was approved by CENELEC as a Europe
21、an Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 61558-2-16 NOTE Harmonized as EN 61558-2-16:200X (not modified). _ BS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010
22、 02:36, Uncontrolled Copy, (c) BSI 3 EN 61558-2-6:2009 Annex ZA (normative) Normative references to international publications with their corresponding European publications Addition to Annex ZA of EN 61558-1: Publication Year Title EN/HD Year IEC 61558-1 2005 Safety of power transformers, power sup
23、plies, reactors and similar products - Part 1: General requirements and tests EN 61558-1 + corr. August 2005 2006 BS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSI 2 61558-2-6 IEC:2009 CONTENTS 1 Scope.5 2 Normative references .6
24、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 voltage .7 1
25、3 Short-circuit voltage .8 14 Heating 8 15 Short-circuit and overload protection 8 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 21 Internal
26、 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.11 26 Creepage distances, clearances and distances through insulation12 27 Resistance to heat, fire and tracking.1
27、2 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 Explanation
28、s 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 BS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSI61558-2-6 IEC:2009 5 SAFETY OF TRANSFORMERS,
29、REACTORS, POWER SUPPLY UNITS AND SIMILAR PRODUCTS FOR SUPPLY VOLTAGES UP TO 1 100 V Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers 1 Scope Replacement: This part of IEC 61558 deals with the safety of sa
30、fety isolating transformers for general applications and power supply units incorporating safety isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal and mechanical aspects. Unles
31、s otherwise specified, from here onward, the term transformer covers safety isolating transformers for general applications and power supply units incorporating safety isolating transformers for general applications. NOTE 2 For power supply units (linear) this part is applicable. For switch mode pow
32、er supply units, IEC 61558-2-16 is applicable together with this part. This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent or associated dry- type transformers. The windings may be encapsulated or non-encapsulated. The rated supply
33、 voltage does not exceed 1 100 V a.c., and the rated supply frequency and the internal operating frequencies do not exceed 500 Hz. The rated output does not exceed: 10 kVA for single-phase transformers; 16 kVA for polyphase transformers. This part is applicable to transformers without limitation of
34、the rated output subject to an agreement between the purchaser and the manufacturer. NOTE 3 Transformers intended to supply distribution networks are not included in the scope. The no-load output voltage or the rated output voltage does not exceed 50 V a.c. or 120 V ripple-free d.c. This part is not
35、 applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or b
36、y the end product standard. NOTE 4 Attention is drawn to the following: for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary; BS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/E
37、XCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSI 6 61558-2-6 IEC:2009 measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered; the different condi
38、tions for transportation, storage, and operation of the transformers should also be considered; additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers intended for use in special environments. NOTE 5 Future technological developmen
39、t of transformers may necessitate a need to increase the upper limit of the frequencies, until then this part may be used as a guidance document. 2 Normative references This clause of Part 1 is applicable except as follows. Addition: IEC 61558-1 :2005, Safety of power transformers, power supplies, r
40、eactors and similar products Part 1: General requirements and tests 3 Terms and definitions This clause of Part 1 is applicable. 4 General requirements This clause of Part 1 is applicable. 5 General notes on tests This clause of Part 1 is applicable. 6 Ratings This clause of Part 1 is applicable exc
41、ept as follows. Addition: 6.101 The rated output voltage shall not exceed 50 V a.c. or 120 V ripple-free d.c. 6.102 The rated output shall not exceed: 10 kVA for single-phase transformers; 16 kVA for polyphase transformers. Transformers without limitation of the rated output shall be subject to agre
42、ement between the purchaser and the manufacturer. 6.103 The rated supply frequency and the internal operating frequencies shall not exceed 500 Hz. 6.104 The rated supply voltage shall not exceed 1 100 V a.c. Compliance with the requirements of 6.101 to 6.104 is checked by inspection of the marking.
43、BS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSI61558-2-6 IEC:2009 7 7 Classification This clause of Part 1 is applicable. 8 Marking and other information This clause of Part 1 is applicable except as follows: 8.1 h) Replacement:
44、 Replace the first sentence by the following: Relevant graphical symbols shown in 8.11 indicating the kind of transformer; 8.11 Addition: Symbol or graphical symbol Explanation or title Identification FFail-safe safety isolating transformer 60417-5222 Non-short-circuit-proof safety isolating transfo
45、rmer 60417-5946 Short-circuit-proof safety isolating transformer(inherently or non-inherently) 60417-5947 9 Protection against electric shock This clause of Part 1 is applicable. 10 Change of input voltage setting This clause of Part 1 is applicable. 11 Output voltage and output current under load T
46、his clause of Part 1 is applicable. 12 No-load output voltage This clause of Part 1 is applicable except as follows: Addition: The no-load output voltage is measured when the transformer is connected to the rated supply voltage at the rated supply frequency at ambient temperature. 12.101 The no-load
47、 output voltage shall not exceed 50 V a.c. or 120 V ripple-free d.c. BS EN 61558-2-6:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 02:36, Uncontrolled Copy, (c) BSI 8 61558-2-6 IEC:2009 For independent transformers, this output voltage limitation applies even when output wind
48、ings, not intended for interconnection, are connected in series. NOTE The requirement for series connection does not apply to associated or IP 00 transformers. 12.102 The difference between the no-load output voltage and the output voltage under load shall not be excessive. The difference is express
49、ed as a percentage of the latter voltage calculated according to the following formula: 100loadload-loadnoUUU(%) where Uno-load is the no-load output voltage and Uloadis the output voltage under load. Compliance with the requirements of 12.101 and 12.102 is checked by measuring the no-load output voltage at the ambient temperature when the transformer, is connected to the rated supply voltage at the rated supply frequency. The difference shall not exceed the v
