BS EN 61558-2-15-2012 Safety of transformers reactors power supply units and combinations thereof Particular requirements and tests for isolating transformers for the supply of med.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSafety of transformers, reactors, power supply units and combinations thereofPart 2-15: Particular requirements and tests for isolating transformers for the supply of medical loc

2、ationsBS EN 61558-2-15:2012National forewordThis British Standard is the UK implementation of EN 61558-2-15:2012. It isidentical to IEC 61558-2-15:2011. It supersedes BS EN 61558-2-15:2001,which will be withdrawn on 27 December 2014.The UK participation in its preparation was entrusted to Technical

3、CommitteePEL/96, Small transformers.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Instit

4、ution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 61758 4ICS 29.180 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 April 2012.Amendments issued s

5、ince publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61558-2-15:2012EUROPEAN STANDARD EN 61558-2-15 NORME EUROPENNE EUROPISCHE NORM February 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektro

6、technische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61558-2-15:2012 E ICS 29.180 Supersedes EN 61558-2-15:2001 + corr. Apr.2004English version Safety of tr

7、ansformers, reactors, power supply units and combinations thereof - Part 2-15: Particular requirements and tests for isolating transformers for the supply of medical locations (IEC 61558-2-15:2011) Scurit des transformateurs, bobines dinductance, blocs dalimentation et des combinaisons de ces lments

8、 - Partie 2-15: Rgles particulires et essais pour les transformateurs de sparation de circuits pour locaux usages mdicaux (CEI 61558-2-15:2011) Sicherheit von Transformatoren, Drosseln, Netzgerten und entsprechenden Kombinationen - Teil 2-15: Besondere Anforderungen und Prfungen an Trenntransformato

9、ren zur Versorgung medizinischer Rume (IEC 61558-2-15:2011) This European Standard was approved by CENELEC on 2011-12-27. 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 w

10、ithout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any

11、 other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia,

12、Cyprus, the Czech 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, Turkey and the United Kingdom. BS EN 61558-2-15:

13、2012EN 61558-2-15:2012 - 2 - Foreword The text of document 96/384/FDIS, future edition 2 of IEC 61558-2-15, prepared by IEC/TC 96, “Transformers, reactors, power supply units and combinations thereof“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61558-2-15:2012. The f

14、ollowing dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-09-27 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2014-12-27 This

15、 document supersedes EN 61558-2-15:2001 + corrigendum April 2004. The main changes consist of updating EN 61558-2-15:2012 in accordance with EN 61558-1:2005. This standard is to be used in conjunction with EN 61558-1:2005. This part supplements or modifies the corresponding clauses in EN 61558-1, so

16、 as to convert that publication into the European standard: “Particular requirements and tests for isolating transformers for the supply of medical locations“. 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

17、 “addition“, “modification“ or “replacement“, 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 part, the

18、words in bold are defined in Clause 3. Subclauses, notes, figures and tables additional to those in Part 1 are numbered starting from 101; supplementary annexes are entitled AA, BB, etc. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rig

19、hts. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61558-2-15:2011 was approved by CENELEC as a European Standard without any modification. Addition to Bibliography of EN 61558-1:2005: In

20、the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60364-1:2005 NOTE Harmonized as HD 60364-1:2008 (modified). IEC 60364-4-41:2005 NOTE Harmonized as HD 60364-4-41:2007 (modified). BS EN 61558-2-15:2012- 3 - EN 61558-2-15:2012 IEC 60364-7-71

21、0:2002 NOTE Harmonized as HD 60364-7-710:2012 (modified). IEC 61557-8:2007 NOTE Harmonized as EN 61557-8:2007 (not modified). BS EN 61558-2-15:2012EN 61558-2-15:2012 - 4 - Annex ZA (normative) Normative references to international publications with their corresponding European publications The follo

22、wing documents, in whole or in part, 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 int

23、ernational publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Addition to Annex ZA of EN 61558-1:2005: Publication Year Title EN/HD Year IEC 61558-1 + corr. March + corr. March 2005 2010 2008 Safety of power transformers, power supplies, reactors a

24、nd similar products - Part 1: General requirements and tests EN 61558-1 + corr. August 2005 2006 BS EN 61558-2-15:2012 2 61558-2-15 IEC:2011 CONTENTS 1 Scope . 5 2 Normative references 6 3 Terms and definitions . 6 4 General requirements . 6 5 General notes on tests 7 6 Ratings . 7 7 Classification

25、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 voltage 8 13 Short-circuit voltage and inrush currents . 9 14 Heating . 10 15 Short-circuit and overload protection

26、 . 10 16 Mechanical strength 10 17 Protection against harmful ingress of dust, solid objects and moisture . 10 18 Insulation resistance, dielectric strength and leakage current 10 19 Construction . 12 20 Components . 14 21 Internal wiring . 14 22 Supply connection and other external flexible cables

27、or cords 14 23 Terminals for external conductors . 14 24 Provisions for protective earthing 15 25 Screws and connections . 15 26 Creepage distances, clearances and distances through insulation . 15 27 Resistance to heat, fire and tracking . 15 28 Resistance to rusting 15 Annexes 16 Annex H Electroni

28、c circuits . 16 Annex L Routine tests (production tests) 16 Bibliography 17 Index of defined terms . 18 Figure 101 The required circuit for measuring the leakage current from the output winding to earth. 11 Figure 102 The required circuit for measuring the leakage current at the protective earth con

29、ductor . 12 BS EN 61558-2-15:201261558-2-15 IEC:2011 5 SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINATIONS THEREOF Part 2-15: Particular requirements and tests for isolating transformers for the supply of medical locations 1 Scope Replacement: This part of IEC 61558 deals with safe

30、ty aspects of isolating transformers for the supply of medical locations. NOTE 1 Safety includes electrical, thermal and mechanical aspects. Unless otherwise specified, from here onward, the term transformer covers isolating transformers for the supply of medical locations. This part is applicable t

31、o stationary, single-phase or three-phase, air-cooled (natural or forced) independent dry-type isolating transformers for the supply of medical IT systems for group 2 medical locations, designed to be permanently connected to the fixed wiring and intended to form the IT power system on the secondary

32、 side. The windings may be encapsulated or non-encapsulated. NOTE 2 IT power systems are defined in IEC 60364-1. NOTE 3 The installation rules for medical IT systems for group 2 medical locations are covered by IEC 60364-7-710. NOTE 4 Transformers covered by this standard are intended for the supply

33、 of medical locations. All other transformers or equipments connected downstream from the transformer are not covered by this Part 2. The rated supply voltage does not exceed 1 000 V a.c. The rated supply frequency and internal operational frequency do not exceed 500 Hz. The rated output does not be

34、 less than 0,5 kVA and does not exceed 10 kVA for single-phase and three-phase transformers. This part is applicable to transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. NOTE 5 Transformers intended to supply power to distribution

35、 networks are not covered by this standard. The no-load output voltage and the rated output voltage does not exceed 250 V a.c. for single-phase or three-phase transformer (phase-to-phase voltage). This standard do not cover power supply unit. This part is not applicable to external circuits and thei

36、r 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 by the appliance specification. NOTE 6 Att

37、ention is drawn to the following: BS EN 61558-2-15:2012 6 61558-2-15 IEC:2011 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; measures to protect the enclosure and the co

38、mponents inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered; the different conditions for transportation, storage, and operation of the transformers should also be considered; additional requirements in accordance w

39、ith other appropriate standards and national rules may be applicable to transformers intended for use in special environments. 2 Normative references This clause of Part 1 is applicable, except as follows: Addition: IEC 61558-1:2005, Safety of power transformers, power supplies, reactors and similar

40、 products Part 1: General requirements and tests 3 Terms and definitions This clause of Part 1 is applicable, except as follows: Addition: 3.1.101 isolating transformer for the supply of medical locations isolating transformer used for the supply of medical IT systems for group 2 medical locations,

41、designed to be permanently connected and with double or reinforced insulation between each part of the transformer (body, screen, circuits, thermal sensitive device) except between the core and the body 3.4.101 functional screening separation between two windings or between a winding and the core or

42、 shielding of a part or of the whole transformer, by means of a conductive material for functional reasons 3.5.101 rated input current unput current, when the transformer is loaded with rated output 3.6.101 no-load input current input current when the transformer is connected to the rated supply vol

43、tage, at the rated frequency, with no-load on the output 3.6.102 inrush current the maximum instantaneous value of the no-load input current of the transformer (peak value) when is switched on at rated supply voltage 4 General requirements This clause of Part 1 is applicable. BS EN 61558-2-15:201261

44、558-2-15 IEC:2011 7 5 General notes on tests This clause of Part 1 is applicable. 6 Ratings This clause of Part 1 is applicable, except as follows: Replacement: 6.1 The rated output voltage (phase-to-phase voltage) shall not exceed 250 V a.c. for single-phase or three-phase transformers. 6.2 The rat

45、ed output shall not be less than 0,5 kVA and it shall not exceed 10 kVA. Transformers without limitation of the rated output shall be subject to agreement between the purchaser and the manufacturer. 6.3 The rated frequency shall not exceed 500 Hz. 6.4 The rated supply voltage shall not exceed 1 000

46、V a.c. Compliance with the requirements of 6.1 to 6.4 shall be verified by inspection of the marking. 7 Classification This clause of Part 1 is applicable, except as follows: 7.2 Replacement: According to short-circuit protection or protection against abnormal conditions: non-short-circuit proof tra

47、nsformer. 8 Marking and other information This clause of Part 1 is applicable, except as follows: 8.1 h) Replacement: Replace the first sentence by the following: Relevant graphical symbols shown in 8.11 indicating the type of transformer; t) Addition: Transformers shall be marked with the measured

48、short-circuit voltage expressed as a percentage of the rated supply voltage. 8.1.101 When the inrush current exceeds 8 times the peak value of the rated input current, the resulting value shall be marked on the transformer. BS EN 61558-2-15:2012 8 61558-2-15 IEC:2011 8.11 Addition: Symbol or graphic

49、al symbol Explanation or title Identification non-short-circuit proof isolating transformer for the supply of medical locations IEC 60417-5972 (DB 2010-08) 8.14 Addition: The instruction sheet shall state: “Screens whose connection to earth is necessary for compliance with the leakage current requirements of Clause 18 shall be connected to earth.” The instruction sheet shall qualify the type of temperature sensor built in the transformer, if any. The instruction sheet shall give the require