BS EN 60255-27-2014 Measuring relays and protection equipment Product safety requirements《测量继电器和保护设备 产品安全要求》.pdf

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1、BSI Standards PublicationMeasuring relays and protection equipmentPart 27: Product safety requirementsBS EN 60255-27:2014BS EN 60255-27:2014Incorporating corrigendum June 2014BS EN 60255-27:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60255-27:2014. It i

2、s identical to IEC 60255-27:2013. It supersedes BS EN 60255-5:2001 and BS EN 60255-27:2005 which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee PEL/95, Measuring relays and protection systems.A list of organizations represented on this committee can be obt

3、ained 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. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 86793 4ICS 29.120.70Compliance w

4、ith a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2014.Amendments/corrigenda issued since publicationDate Text affected30 June 2014 Implementation of CENELEC correcti

5、on notice 16 April 2014: supersession information in national foreword and CENELEC foreword correctedEUROPEAN STANDARD EN 60255-27 NORME EUROPENNE EUROPISCHE NORM March 2014 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Ko

6、mitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60255-27:2014 E ICS 29.120.70 Supersedes EN 60255-5:2001, EN 60255-27:2005

7、English version Measuring relays and protection equipment - Part 27: Product safety requirements (IEC 60255-27:2013) Relais de mesure et dispositifs de protection - Partie 27: Exigences de scurit (CEI 60255-27:2013) Messrelais und Schutzeinrichtungen - Teil 27: Anforderungen an die Produktsicherheit

8、 (IEC 60255-27:2013) This European Standard was approved by CENELEC on 2013-11-19. 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

9、 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 other language made by translation und

10、er 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, Cyprus, the Czech Republic, Denmark, Es

11、tonia, Finland, Former Yugoslav Republic of Macedonia, 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. EN 60255-27:2014

12、- 2 - Foreword The text of document 95/316/FDIS, future edition 2 of IEC 60255-27, prepared by IEC/TC 95 “Measuring relays and protection equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60255-27:2014. The following dates are fixed: latest date by which the doc

13、ument has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-09-28 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-11-19 This document supersedes EN 60255-5:2001 and EN 60255-27:2

14、005. EN 60255-27:2014 includes the following significant technical changes with respect to EN 60255-27:2005: a) The removal of tables and diagrams which are from other standards and referring instead directly to the source standard. b) All aspects of EN 60255-5 have been covered and this standard ca

15、n be withdrawn. c) Ambiguity within the standard has been removed. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This standard cover

16、s the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 60255-27:2013 was approved by CENELEC as a European Standard without any modification. In the of

17、ficial version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60068-3-4:2001 NOTE Harmonized in EN 60068-3-4:2001 (not modified) IEC 60112:2003 NOTE Harmonized in EN 60112:2003 (not modified) IEC 60127-1 NOTE Harmonized in EN 60127-1 IEC 60255-5:2000 NOTE Ha

18、rmonized in EN 60255-5:2000 (not modified) IEC 60384-14:2013 NOTE Harmonized in EN 60384-14:2013 (not modified) IEC 60695-2-12 NOTE Harmonized in EN 60695-2-12 IEC 60695-2-13:2010 NOTE Harmonized in EN 60695-2-13:2010 (not modified) IEC 61558 (series) NOTE Harmonized in EN 61558 (series) IEC 61810-1

19、:2008 NOTE Harmonized in EN 61810-1:2008 (not modified) BS EN 60255-27:2014EN 60255-27:2014 - 2 - Foreword The text of document 95/316/FDIS, future edition 2 of IEC 60255-27, prepared by IEC/TC 95 “Measuring relays and protection equipment“ was submitted to the IEC-CENELEC parallel vote and approved

20、 by CENELEC as EN 60255-27:2014. The following 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) 2014-09-28 latest date by which the national standards conflicting with the document have

21、 to be withdrawn (dow) 2016-11-19 This document supersedes EN 60255-5:2001 and EN 60255-27:2005. EN 60255-27:2014 includes the following significant technical changes with respect to EN 60255-27:2005: a) The removal of tables and diagrams which are from other standards and referring instead directly

22、 to the source standard. b) All aspects of EN 60255-5 have been covered and this standard can be withdrawn. c) Ambiguity within the standard has been removed. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shal

23、l not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 6025

24、5-27:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60068-3-4:2001 NOTE Harmonized in EN 60068-3-4:2001 (not modified) IEC 60112:2003 NOTE Harmonized in EN

25、60112:2003 (not modified) IEC 60127-1 NOTE Harmonized in EN 60127-1 IEC 60255-5:2000 NOTE Harmonized in EN 60255-5:2000 (not modified) IEC 60384-14:2013 NOTE Harmonized in EN 60384-14:2013 (not modified) IEC 60695-2-12 NOTE Harmonized in EN 60695-2-12 IEC 60695-2-13:2010 NOTE Harmonized in EN 60695-

26、2-13:2010 (not modified) IEC 61558 (series) NOTE Harmonized in EN 61558 (series) IEC 61810-1:2008 NOTE Harmonized in EN 61810-1:2008 (not modified) - 3 - EN 60255-27:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The follow

27、ing 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 inte

28、rnational publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60050 (series) International Electrotechnical Vocabulary - Part 103: Mathematics - Functions - IEC 60085 Electrical insulation - Thermal evaluation a

29、nd designation EN 60085 IEC 60255-1 Measuring relays and protection equipment - Part 1: Common requirements EN 60255-1 IEC 60255-21-1 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 1: Vibration tests (sinusoidal) EN 60255-

30、21-1 IEC 60255-21-2 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 2: Shock and bump tests EN 60255-21-2 IEC 60255-21-3 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protecti

31、on equipment - Section 3: Seismic tests EN 60255-21-3 IEC 60255-26 2013 Measuring relays and protection equipment - Part 26: Electromagnetic compatibility requirements EN 60255-26 + AC:2013 2013 IEC 60352-1 Solderless connections - Part 1: Wrapped connections - General requirements, test methods and

32、 practical guidance EN 60352-1 IEC 60352-2 Solderless connections - Part 2: Crimped connections - General requirements, test methods and practical guidance EN 60352-2 IEC 60417 Data-base Graphical symbols for use on equipment IEC 60529 +A1 1989 1999 Degrees of protection provided by enclosures (IP C

33、ode) EN 60529 + corr. May +A1 1991 1993 2000 IEC 60664-1 2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests EN 60664-1 2007 IEC 60664-3 2003 Insulation coordination for equipment within low-voltage systems - Part 3: Use of coating, pott

34、ing or moulding for protection against pollution EN 60664-3 2003 BS EN 60255-27:2014 2 60255-27 IEC:2013 CONTENTS INTRODUCTION . 8 1 Scope . 9 2 Normative references . 10 3 Terms and definitions . 11 4 General safety requirements . 19 4.1 General . 19 4.2 Earthing requirements . 20 5 Protection agai

35、nst electric shock 20 5.1 General . 20 Introductory remark . 20 5.1.1Protection from contact with hazardous live parts 20 5.1.2Discharge of capacitors . 21 5.1.3Protective impedance 22 5.1.4Accessible parts 22 5.1.5Bonding to the protective conductor . 25 5.1.6Protective conductor connection 26 5.1.

36、7High leakage current . 26 5.1.8Solid insulation 26 5.1.9Clearances and creepage distances 27 5.1.10Functional earthing 29 5.1.115.2 Single-fault conditions . 29 Testing in single-fault condition . 29 5.2.1Application of single-fault condition . 30 5.2.2Duration of tests 31 5.2.3Compliance . 32 5.2.

37、46 Mechanical aspects 33 6.1 Protection against mechanical hazards 33 Stability . 33 6.1.1Moving parts 33 6.1.2Edges and corners 33 6.1.36.2 Mechanical requirements . 33 6.3 Mechanical security of terminations . 33 7 Flammability and resistance to fire . 33 7.1 General . 33 7.2 Rationale . 34 7.3 Ge

38、neral hazards from overheating and fire 36 Equipment temperature limits 36 7.3.1Hazardous gases and chemicals 36 7.3.27.4 Minimization of fire risk 37 General . 37 7.4.1Eliminating or reducing the sources of ignition within the equipment 37 7.4.27.5 Cabling and fusing. 37 7.6 Flammability of materia

39、ls and components 38 General . 38 7.6.1Materials for components and other parts inside fire enclosures 38 7.6.2BS EN 60255-27:2014EN 60255-27:2014 - 4 - Publication Year Title EN/HD Year IEC/TS 60695-2-20 Fire hazard testing - Part 2-20: Glowing/hot wire based test methods - Hot-wire coil ignitabili

40、ty - Apparatus, test method and guidance - - IEC 60695-11-10 Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods EN 60695-11-10 IEC 60825-1 Safety of laser products - Part 1: Equipment classification and requirements EN 60825-1 IEC 60990 1999 Methods of me

41、asurement of touch current and protective conductor current EN 60990 1999 IEC 61010-1 2010 Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1: General requirements EN 61010-1 2010 IEC 61032 Protection of persons and equipment by enclosures - Probes for

42、verification EN 61032 IEC 61140 Protection against electric shock - Common aspects for installation and equipment EN 61140 IEC 61180-1 1992 High-voltage test techniques for low-voltage equipment - Part 1: Definitions, test and procedure requirements EN 61180-1 1994 IEC 61180-2 High-voltage test tech

43、niques for low-voltage equipment - Part 2: Test equipment EN 61180-2 IEC 62151 Safety of equipment electrically connected to a telecommunication network - - ISO 7000 Graphical symbols for use on equipment - Registered symbols - - BS EN 60255-27:2014 2 60255-27 IEC:2013 CONTENTS INTRODUCTION . 8 1 Sc

44、ope . 9 2 Normative references . 10 3 Terms and definitions . 11 4 General safety requirements . 19 4.1 General . 19 4.2 Earthing requirements . 20 5 Protection against electric shock 20 5.1 General . 20 Introductory remark . 20 5.1.1Protection from contact with hazardous live parts 20 5.1.2Discharg

45、e of capacitors . 21 5.1.3Protective impedance 22 5.1.4Accessible parts 22 5.1.5Bonding to the protective conductor . 25 5.1.6Protective conductor connection 26 5.1.7High leakage current . 26 5.1.8Solid insulation 26 5.1.9Clearances and creepage distances 27 5.1.10Functional earthing 29 5.1.115.2 Si

46、ngle-fault conditions . 29 Testing in single-fault condition . 29 5.2.1Application of single-fault condition . 30 5.2.2Duration of tests 31 5.2.3Compliance . 32 5.2.46 Mechanical aspects 33 6.1 Protection against mechanical hazards 33 Stability . 33 6.1.1Moving parts 33 6.1.2Edges and corners 33 6.1

47、.36.2 Mechanical requirements . 33 6.3 Mechanical security of terminations . 33 7 Flammability and resistance to fire . 33 7.1 General . 33 7.2 Rationale . 34 7.3 General hazards from overheating and fire 36 Equipment temperature limits 36 7.3.1Hazardous gases and chemicals 36 7.3.27.4 Minimization

48、of fire risk 37 General . 37 7.4.1Eliminating or reducing the sources of ignition within the equipment 37 7.4.27.5 Cabling and fusing. 37 7.6 Flammability of materials and components 38 General . 38 7.6.1Materials for components and other parts inside fire enclosures 38 7.6.2BS EN 60255-27:2014EN 60

49、255-27:2014 - 4 - Publication Year Title EN/HD Year IEC/TS 60695-2-20 Fire hazard testing - Part 2-20: Glowing/hot wire based test methods - Hot-wire coil ignitability - Apparatus, test method and guidance - - IEC 60695-11-10 Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods EN 60695-11-10 IEC 60825-1 Safety of laser products - Part 1: Equipment classification and requirements EN 60825-1 IEC 60990 1999 Methods of measurement of touch current and protective conductor current EN 60990 1999 IEC 6101

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