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 +A2:2012BS EN 60947-8:2003This British Standard waspublished under the authorityof the Standards 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, inc
3、orporating amendment A1:2006. It is identical withIEC 60947-8:2003, incorporating amendment 1:2006.The start 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
4、 IEC amendment 1 isindicated in the text by !“.The UK participation in its preparation was entrusted by Technical 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 o
5、btained on request toits secretary.This publication does not purport to include all the necessary provisionsof acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity fromlegal obligations.Amendments issued since publicationAmd. No. Date
6、 Comments16835 31 January 2007 See national forewordBS EN 60947-8:2003+A2:2012ISBN 978 0 580 67208 8Amendments/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. Ne
7、wAnnexes ZA and ZZ inserted.This British Standard waspublished under the authorityof the Standards Policy andStrategy 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 isident
8、ical to IEC 60947-8:2003, incorporating amendments 1:2006 and 2:2011. Itsupersedes BS EN 60947-8:2003, which will be withdrawn on 22 June 2014.l r ent is i dicated in theext by tags.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
9、is indicated in the textby .this subcommittee c n be obtained onrequest o its secretary.EUROPEAN STANDARD EN 60947-8NORME EUROPENNE EUROPISCHE NORMJuly 2003 CENELEC European Committee for Electrotechnical StandardizationComit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrote
10、chnische 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 29.130.20 English version Low-voltage switchgear and controlgear Part 8: Control uni
11、ts 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 tournantes (CEI 60947-8:2003)Niedrspanungschaltgerte Teil 8: Auslsegerte fr den eingeb
12、auten 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 Regulations which stipulate the conditions for giving this EuropeanStandard the statu
13、s 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. This European Standard exists in three official versions (English, French, German). A
14、 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 are the national electrotechnical committees of Austria, Belgium, Czech Republic,D
15、enmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. November 2006 +A1EN 60947-8:2003+A2June 2012Foreword The text of document 17B/1276/FDIS, future edition 1 o
16、f IEC 60947-8, 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 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
17、 general rules dealt with in 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 fo
18、llowing 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) 2004-04-01 latest date by which the national standards conflictingwith the EN have to be withdrawn (dow) 2006-07-01 Annexes designate
19、d “normative“ are part of the 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 6094
20、7-8:2003 was approved by CENELEC 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 d
21、ate by which the national standards 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 t
22、o amendment A1 submitted to 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 60947-8:2
23、003, prepared byEN 60947-8:2003/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
24、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 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 h
25、ave to be withdrawn (dow) 2014-06-22 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 S
26、afety Objectives for Electrical 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
27、 the relationship with EU Directive(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 60
28、947-8:2003+A2:2012EN 60947-8:2003/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 b
29、y 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 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
30、 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 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
31、 Safety Objectives for Electrical 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). F
32、or the relationship with EU Directive(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. _ Page 3BS EN 60947-8:2003+A2:2
33、012EN 60947-8:2003+A2:2012Foreword to amendment A2Page 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 Classification115 Characteristics.11 5.1 General.11 5.2 Typ
34、e 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 Nature of information.15 6.2 Marking.15 6.3 Instructions for
35、 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 (EMC)18 8.3.1 General.18 8.3.2 Immunity19 8.3.3 Emissi
36、on19 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 protection systems30 Annex B (normative) Special tests32 Anne
37、x 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.18 Page 3EN 60947-8:2003 CONTENTS INTRODUCTION.4 1 Sco
38、pe5 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 systems. 35.4 Rated electrical v lues characteristic varia
39、tion 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 and transport conditions16 8 Constructional and perform
40、ance 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 requirements.21 3 Compliance wit performance requirements.9.4
41、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 theircorresponding European publications34 Figure A.1 Characteristic c
42、urve 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 (informative) Coverage of Essential Requirements of EU Dir
43、ectives Page 4 EN 60947-8:2003INTRODUCTION Thermal protection 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
44、 faults in the coolingsystem, or excessively high ambient 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 n
45、ot 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 system in accordance with this standard may consist of a characteristicchange thermal detector which has an associat
46、ed control unit to convert a point on the characteristic of the detector to a switching function. A very large number of thermal protection systems are in use and, in all cases, the machine manufacturer will fit the detectorsin the machine. The machine manufacturer will either supply the control uni
47、t with the machine or specify particulars of the control unit to be used. It is also customary for the control units to be considered as part of the control system and not necessarily supplied with the machine. For this reason it is considered necessary to have aninterchangeable system, where the ch
48、aracteristics of association between the detector and the control unit are specified. This particular system is not considered superior in any way to other systems complying with the requirements of this standard, but in some fields the practice is likely to be that this interchangeable system will
49、be used, as indicated bythe designation “Mark A”. Page 5BS EN 60947-8:2003+A2:2012IEC 60947-8:2003+A2:2011Page 5EN 60947-8:2003 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines 1 Scope This part of IEC 60947 specifies ru
