1、BRITISH STANDARDBS EN 60947-8:2003Incorporating amendment no. 1Low-voltage switchgear and controlgear Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machinesThe European Standard EN 60947-8:2003, incorporating amendmentA1:2006, has the status of a British Standar
2、dICS 29.130.20 BS EN +A2:2012Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 60947-8:2003This British Standard waspublished under the authorityof the S
3、tandards Policy andStrategy Committee on 1 August 2003 BSI 2007ISBN 0 580 42357 3National forewordThis British Standard was published byBSI. It is the UK implementation ofEN 60947-8:2003, incorporating amendment A1:2006. It is identical withIEC 60947-8:2003, incorporating amendment 1:2006.The start
4、and finish of textintroduced or altered by amendment is indicated inthe text by tags !“. Tags indicating changes to IEC text carry the numberof the IEC amendment. For example, text altered by IEC amendment 1 isindicated in the text by !“.The UK participation in its preparation was entrusted by Techn
5、ical CommitteePEL/17, Switchgear, controlgear and HV-LV co-ordination, to SubcommitteePEL/17/2, Low voltage switchgear and controlgear.A list of organizations represented on PEL/17/2 can be obtained on request toits secretary.This publication does not purport to include all the necessary provisionso
6、f acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity fromlegal obligations.Amendments issued since publicationAmd. No. Date Comments16835 31 January 2007 See national forewordBS EN 60947-8:2003+A2:2012ISBN 978 0 580 67208 8Amendment
7、s/corrigenda issued since publicationAmd. No. Date Comments16835 31 January 2007 See national foreword31 August 2012 Imple enta ion of IEC amendment 2:2011with CENELEC endorsement A2:2012. NewAnnexes ZA and ZZ inserted.This British Standard waspublished under the authorityof the Standards Policy and
8、Strategy Committee on 1 August 2003 The British Standards Institution 2012. Published by BSI StandardsLimited 2012itish Standard is the UK mplementation of EN 60947-8:2003+A2:2012. It isidentical to IEC 60947-8:2003, incorporating amendments 1:2006 and 2:2011. Itsupersedes BS EN 60947-8:2003, which
9、will be withdrawn on 22 June 2014.l r ent is i dicated in theext by tags. Tags indicatin changes to IEC text carry the number of the IECamendment. For example, text lter d by IEC amendment 1 is indicated in the textby .this subcommittee c n be obtained onrequest o its secretary.Copyright European Co
10、mmittee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD EN 60947-8NORME EUROPENNE EUROPISCHE NORMJuly 2003 CENELEC European Committee for Electrotechnical Standardizati
11、onComit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 60947-8:2003 EICS 29
12、.130.20 English version Low-voltage switchgear and controlgear Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines (IEC 60947-8:2003)Appareillage basse tension Partie 8: Units de commande pour laprotection thermique incorpore (CTP)aux machines lectriques tour
13、nantes (CEI 60947-8:2003)Niedrspanungschaltgerte Teil 8: Auslsegerte fr den eingebauten thermischen Schutz (PTC) von rotierenden elektrischen Maschinen (IEC 60947-8:2003)This European Standard was approved by CENELEC on 2003-07-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Reg
14、ulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member. Thi
15、s European Standard exists in three official versions (English, French, German). A version in any otherlanguage made by translation under the responsibility of a CENELEC member into its own language andnotified to the Central Secretariat has the same status as the official versions. CENELEC members
16、are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. November 2006 +A1EN 60947
17、-8:2003+A2June 2012Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Foreword The text of document 17B/1276/FDIS, future edition 1 of IEC 60947-8, prepared by
18、SC 17B, Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60947-8 on 2003-07-01. This Part 8 shall be used in conjunction with EN 60947-1. The provisions of the general rules dealt with i
19、n EN 60947-1 are applicable to this standard, where specifically called for. Clauses and subclauses, tables, figures and annexes thus applicable are identified by reference to “IEC 60947-1“, e.g. 1.2.3 ofIEC 60947-1, Table 4 of IEC 60947-1 or Annex A of IEC 60947-1. The following dates were fixed: l
20、atest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-04-01 latest date by which the national standards conflictingwith the EN have to be withdrawn (dow) 2006-07-01 Annexes designated “normative“ are part of t
21、he body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes A, B and ZA are normative and annex C is informative. Annex ZA has been added by CENELEC. _ Endorsement noticeThe text of the International Standard IEC 60947-8:2003 was approved by CE
22、NELEC as a EuropeanStandard without any modification. _ Page 2EN 609478:2003The following dates were fixed: latest date by which the amendment has to beimplemented at national level by publication ofan identical national standard or by endorsement (dop) 2007-07-01 latest date by which the national s
23、tandards conflictingwith the amendment have to be withdrawn (dow) 2009-10-01 _ Endorsement noticeThe text of amendment 1:2006 to the International Standard IEC60947-8:2003 was approved byCENELEC as an amendment to the European Standard without any modification._ Foreword to amendment A1 submitted to
24、 the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60947-8:2003 on 2006-10-01. SC 17B, Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, wasThe text of document 17B/1477/FDIS, future amendment 1 to IEC 60947-8:2003, prepared byEN 60947-8:
25、2003/A2:2012 - 2 - Foreword The text of document 17B/1732/FDIS, future edition 1 of IEC 60947-8:2003/A2, prepared by SC 17B, “Low-voltage switchgear and controlgear“, of IEC TC 17, “Switchgear and controlgear“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60947-8:2003/
26、A2:2012. 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) 2012-12-29 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2
27、014-06-22 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electr
28、ical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC) This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU D
29、irective(s) see informative Annex ZZ, which is an integral part of this document. _ Endorsement notice The text of the International Standard IEC 60947-8:2003/A2:2011 was approved by CENELEC as a European Standard without any modification. _ BS EN 60947-8:2003+A2:2012EN 60947-8:2003+A2:2012Copyright
30、 European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN 60947-8:2003/A2:2012 - 2 - Foreword The text of document 17B/1732/FDIS, future edition 1 of IEC 60947-8:2003/A2, pr
31、epared by SC 17B, “Low-voltage switchgear and controlgear“, of IEC TC 17, “Switchgear and controlgear“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60947-8:2003/A2:2012. The following dates are fixed: latest date by which the document has to be implemented at national
32、 level by publication of an identical national standard or by endorsement (dop) 2012-12-29 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2014-06-22 Attention is drawn to the possibility that some of the elements of this document may be the subje
33、ct of patent rights. CEN and CENELEC shall 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) This document has been pre
34、pared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. _ Endorsement notice The
35、text of the International Standard IEC 60947-8:2003/A2:2011 was approved by CENELEC as a European Standard without any modification. _ Page 3BS EN 60947-8:2003+A2:2012EN 60947-8:2003+A2:2012Foreword to amendment A2Copyright European Committee for Electrotechnical Standardization Provided by IHS unde
36、r license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 3EN 60947-8:2003 CONTENTS INTRODUCTION.4 1 Scope5 2 Normative references.5 3 Terms, definitions, symbols and abbreviations.7 3.1 Terms and definitions7 3.2 Symbols and abbreviations11 4 Clas
37、sification115 Characteristics.11 5.1 General.11 5.2 Type of equipment.11 5.3 Rated electrical values of protection systems.13 5.4 Rated electrical values of characteristic variation thermal detectors14 5.5 Rated voltage of the detector circuit of the control unit.14 6 Product information15 6.1 Natur
38、e of information.15 6.2 Marking.15 6.3 Instructions for installation, operation and maintenance16 7 Normal service, mounting and transport conditions16 8 Constructional and performance requirements.16 8.1 Constructional requirements16 8.2 Performance requirements.16 8.3 Electromagnetic compatibility
39、 (EMC)18 8.3.1 General.18 8.3.2 Immunity19 8.3.3 Emission19 9 Tests20 9.1 Kinds of tests20 9.2 Compliance with constructional requirements.21 9.3 Compliance with performance requirements.21 9.4 EMC tests.27 9.5 Routine and sampling tests28 Annex A (normative) Thermal detectors used in thermal protec
40、tion systems30 Annex B (normative) Special tests32 Annex ZA (normative) Normative references to international publications with theircorresponding European publications34 Figure A.1 Characteristic curve of a typical Mark A detector31 Table 1 Tests for EMC Immunity27 Table 2 Vibration test parameters
41、.18 Page 3EN 60947-8:2003 CONTENTS INTRODUCTION.4 1 Scope5 2 Normative references3 Terms, definitions, symbols and abbreviations.73.1 Terms and definitions.2 Symbols and abbreviations11 4 Classificati n .5 Characteristics 5.1 General. .2 Typ of equipment. .3 Rated electrical values of protection sys
42、tems. 35.4 Rated electrical v lues characteristic variation thermal detectors14 5.5 Rated voltage of the detector circuit of the control unit.14 6 Product information15 6.1 Nature of information.15 .2 Marking. 6.3 Instructions for installation, operation and maintenance16 7 Normal service, mounting
43、and transport conditions16 8 Constructional and performance requirements.16 8.1 Constructional requirements. 16 8.2 Performance requirements.3 Electromagnetic compatibility (EMC)18 8.3.1 General.18.3.2 Immunity 9 .3 Emission19 9 Tests20 9.1 Kinds of tests20 9.2 Compliance with constructional require
44、ments.21 3 Compliance wit performance requirements.9.4 EMC tests.27 9.5 Routine and sampling tests28 Annex A (normative) Thermal detectors used in thermal protection systems30 Annex B (normati ) Special tests32 ne ZA (normative) Normative references to international publications with theircorrespond
45、ing European publications34 Figure A.1 Characteristic curve of a typical Mark A detector31 Table 1 Tests for EMC Immunity27 Table 2 Vibration test parameters.18 Page 4BS EN 60947-8:2003+A2:2012IEC 60947-8:2003+A2:201156688121212121214151516161616171717182020202121212222272931333537322819Annex ZZ (in
46、formative) Coverage of Essential Requirements of EU Directives Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 4 EN 60947-8:2003INTRODUCTION Thermal pro
47、tection systems which are based on the principle of monitoring the temperature ofthe protected parts constitute a simple and effective means of protecting rotating electrical machines against excessive temperature rises, including those caused by faults in the coolingsystem, or excessively high ambi
48、ent temperature, whereas systems of protection based only on monitoring the current absorbed may not ensure this type of protection. Since the operating temperature and response times of thermal protection systems are fixed in advance, they may not be adjusted in relation to the conditions of use of the machine andthey may not be completely effective for all fault conditions or improper use of the machine.A thermal protection s
