1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Components for low-voltage surge protectionPart 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs) (IEC 61643-352:2018)BS EN IEC 61643-352:2018EUR
2、OPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 61643-352 March 2018 ICS 33.040.99 English Version Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs) (IEC 61643-352:2018)
3、 Composants pour protection par parafoudres basse tension - Partie 352: Principes de choix et dapplication pour les transformateurs disolement contre les surtensions (SIT) dans les rseaux de signalisation et de tlcommunications (IEC 61643-352:2018) Bauelemente fr berspannungsschutzgerte fr Niederspa
4、nnung - Teil 352: Auswahl- und Anwendungsprinzipien fr berspannungstrenntransformatoren (SIT) fr den Einsatz in Telekommunikations- und signalverarbeitenden Netzwerken (IEC 61643-352:2018) This European Standard was approved by CENELEC on 2018-02-14. CENELEC members are bound to comply with the CEN/
5、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 and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Cent
6、re 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 under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same statu
7、s as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
8、 Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnis
9、che Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 61643-352:2018 E National forewordThis British Standard is the UK implementation of EN IEC 616
10、43352:2018. It is identical to IEC 61643352:2018.The UK participation in its preparation was entrusted to Technical Committee PEL/37/1, Surge Arresters Low Voltage.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to i
11、nclude all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 90998 6ICS 33.040.99Compliance with a British Standard cannot confer immunity from legal obligations.This
12、 British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN IEC 61643352:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 61643-352 March 2018 ICS
13、 33.040.99 English Version Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs) (IEC 61643-352:2018) Composants pour protection par parafoudres basse tension - Partie 352: Princi
14、pes de choix et dapplication pour les transformateurs disolement contre les surtensions (SIT) dans les rseaux de signalisation et de tlcommunications (IEC 61643-352:2018) Bauelemente fr berspannungsschutzgerte fr Niederspannung - Teil 352: Auswahl- und Anwendungsprinzipien fr berspannungstrenntransf
15、ormatoren (SIT) fr den Einsatz in Telekommunikations- und signalverarbeitenden Netzwerken (IEC 61643-352:2018) This European Standard was approved by CENELEC on 2018-02-14. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu
16、ropean Standard the status of a national standard without 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 v
17、ersions (English, French, German). A version in any 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
18、committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia
19、, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brusse
20、ls 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 61643-352:2018 E BS EN IEC 61643352:2018EN IEC 61643-352:2018 (E) 2 European foreword The text of document 37B/161/FDIS, future edition 1 of IEC 61643-352, prepared by IEC/
21、SC 37B, “Components for low-voltage surge protection“ of IEC/TC 37 “Surge arresters“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61643-352:2018. The following dates are fixed: latest date by which the document has to be implemented at national level by publicatio
22、n of an identical national standard or by endorsement (dop) 2018-11-14 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2021-02-14 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
23、 CENELEC shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61643-352:2018 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes h
24、ave to be added for the standards indicated: IEC 60065:2001 NOTE Harmonized as EN 60065:2002 (modified). IEC 60068-2-1:2007 NOTE Harmonized as EN 60068-2-1:2007 (not modified). IEC 60068-2-2:2007 NOTE Harmonized as EN 60068-2-2:2007 (not modified). IEC 60076-1:2011 NOTE Harmonized as EN 60076-1:2011
25、 (not modified). IEC 60064-1 NOTE Harmonized as EN 60064-1. IEC 60721-3-9:1993 NOTE Harmonized as EN 60721-3-9:1993 (not modified). IEC 61340-4-8:2014 NOTE Harmonized as EN 61340-4-8:2015 (not modified). IEC 61558-1 NOTE Harmonized as EN 61558-1. IEC 61558-2-4:2009 NOTE Harmonized as EN 61558-2-4:20
26、09 (not modified). IEC 61558-2-6:2009 NOTE Harmonized as EN 61558-2-6:2009 (not modified). IEC 61643-21 NOTE Harmonized as EN 61643-21. BS EN IEC 61643352:2018EN IEC 61643-352:2018 (E) 3 Annex ZA (normative) Normative references to international publications with their corresponding European publica
27、tions The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)
28、applies. NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title
29、EN/HD Year IEC 61643-351 - Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT) EN 61643-351 - BS EN IEC 61643352:2018This page deliberately left blank 2 IEC 61643-35
30、2:2018 IEC 2018 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms, definitions, symbols and abbreviated terms 7 3.1 Terms and definitions 7 3.2 Symbols 8 3.3 Abbreviated terms . 9 4 Service conditions . 10 4.1 Temperature range . 10 4.2 Humidity . 10 4.3 Altitude . 10
31、 4.4 Microclimate . 10 5 SIT surge conditions 11 5.1 SIT surge mitigation 11 5.2 Common-mode surges 12 5.3 Differential-mode surges . 13 5.3.1 General . 13 5.3.2 Ethernet transformer differential surge action 13 6 Selection . 13 6.1 General . 13 6.2 Impulse withstand voltage . 13 6.3 Rated values of
32、 SIT 14 7 Applications . 14 7.1 General . 14 7.2 Example of surge protection using SITs with ES for control and terminal equipment installed in two different buildings respectively . 14 7.3 Example of surge protection using SITs for telecommunication equipment in substation . 14 7.4 Example of surge
33、 protection using SITs for transmission and switching equipment installed in different floors in a communication building 16 7.5 Example of surge protection using SITs for computer network equipment in a data centre . 17 7.6 Example of surge protection using SITs for a Power over Ethernet (PoE) syst
34、em 17 7.7 Example of surge protection using SITs for LAN . 18 Annex A (informative) Lightning overvoltages of telecommunication line 19 Bibliography 20 Figure 1 Symbol for a two-winding SIT . 8 Figure 2 Symbol for a two-winding SIT with polarity indication . 9 Figure 3 Symbol for a two-winding SIT w
35、ith electric screen 9 Figure 4 SIT with centre tapped windings . 9 Figure 5 Common-mode surge conditions for SIT . 11 Figure 6 Common-mode surge conditions for SIT with an electric screen . 12 Figure 7 Transformer differential surge truncation 13 2 IEC 61643-352:2018 IEC 2018 CONTENTS FOREWORD . 4 I
36、NTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms, definitions, symbols and abbreviated terms 7 3.1 Terms and definitions 7 3.2 Symbols 8 3.3 Abbreviated terms . 9 4 Service conditions . 10 4.1 Temperature range . 10 4.2 Humidity . 10 4.3 Altitude . 10 4.4 Microclimate . 10 5 SIT surge cond
37、itions 11 5.1 SIT surge mitigation 11 5.2 Common-mode surges 12 5.3 Differential-mode surges . 13 5.3.1 General . 13 5.3.2 Ethernet transformer differential surge action 13 6 Selection . 13 6.1 General . 13 6.2 Impulse withstand voltage . 13 6.3 Rated values of SIT 14 7 Applications . 14 7.1 General
38、 . 14 7.2 Example of surge protection using SITs with ES for control and terminal equipment installed in two different buildings respectively . 14 7.3 Example of surge protection using SITs for telecommunication equipment in substation . 14 7.4 Example of surge protection using SITs for transmission
39、 and switching equipment installed in different floors in a communication building 16 7.5 Example of surge protection using SITs for computer network equipment in a data centre . 17 7.6 Example of surge protection using SITs for a Power over Ethernet (PoE) system 17 7.7 Example of surge protection u
40、sing SITs for LAN . 18 Annex A (informative) Lightning overvoltages of telecommunication line 19 Bibliography 20 Figure 1 Symbol for a two-winding SIT . 8 Figure 2 Symbol for a two-winding SIT with polarity indication . 9 Figure 3 Symbol for a two-winding SIT with electric screen 9 Figure 4 SIT with
41、 centre tapped windings . 9 Figure 5 Common-mode surge conditions for SIT . 11 Figure 6 Common-mode surge conditions for SIT with an electric screen . 12 Figure 7 Transformer differential surge truncation 13 BS EN IEC 61643352:2018IEC 61643-352:2018 IEC 2018 3 Figure 8 Example of surge protection us
42、ing SITs in order to isolate two different buildings . 14 Figure 9 Example of surge protection using SITs in substation . 15 Figure 10 Example of surge protection using SITs in a communication building . 16 Figure 11 Example of surge protection using SITs in a data centre 17 Figure 12 Example of sur
43、ge protection using SITs for a Power over Ethernet (PoE) system 17 Figure 13 Example of surge protection using SITs for LAN . 18 Figure A.1 Lightning overvoltages of telecommunication line 19 Table 1 List of abbreviated terms used in this document 10 Table 2 Classification of microclimate condition
44、. 10 BS EN IEC 61643352:2018 4 IEC 61643-352:2018 IEC 2018 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTION Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs) FOREWORD 1) The Internat
45、ional Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electron
46、ic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees;
47、any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standa
48、rdization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has rep
49、resentation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international unifor
