1、PUBLISHED DOCUMENTPD CLC/TR 50450:2006Resistibility requirements for equipment having (a) telecommunication port(s)ICS 33.040.40; 33.100.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g
2、3g38g50g51g60g53g44g42g43g55g3g47g36g58PD CLC/TR 50450:2006This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 May 2006 BSI 2006ISBN 0 580 48426 2National forewordThis Published Document is the official English language version of CLC/TR 504
3、50:2006.The UK participation in its preparation was entrusted to Technical Committee TCT/7, Telecommunications Installation requirements, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Sta
4、ndards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.Thi
5、s publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a Published Document does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible in
6、ternational/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the CEN/TR
7、title page, pages 2 to 10, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsTECHNICAL REPORT CLC/TR 50450 RAPPORT TECHNIQUE TECHNISCHER BERICHT March 2006 CEN
8、ELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved wor
9、ldwide for CENELEC members. Ref. No. CLC/TR 50450:2006 E ICS 33.040.40; 33.100.01 Supersedes R0BT-003:2000English version Resistibility requirements for equipment having (a) telecommunication port(s) Exigences de tenue aux chocs des quipements possdant un (des) port(s) de tlcommunication Anforderung
10、en zur Zerstrfestigkeit von Einrichtungen mit (einem Telekommunikationsanschluss) Telekommunikationsanschlssen This Technical Report was approved by CENELEC on 2005-12-09. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia,
11、Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword CENELEC Report R0BT-003:2000 had been established by a joint a
12、d hoc working group, which was set up between CENELEC and ETSI in order to analyze the status quo in the field of standardization concerning resistibility. The group was composed by experts from the following Technical Bodies within CENELEC and ETSI: CENELEC/SC 210A, CENELEC/TC 215, CENELEC/TC 81X,
13、CENELEC/TC 74 and ETSI/TC ERM (EMC-WG). NOTE CENELEC/TC 74 has been transferred into CENELEC/TC 108 “Safety of electronic equipment within the fields of audio/video, information technology and communication technology” in 2002. CENELEC/SC 210A has been disbanded in 2003 and its work items were taken
14、 over by the parent committee TC 210. Through BT decision D122/066 R0BT-003:2000 was assigned to TC 215 for re-publication as a CLC/TR. The technical contents has not been changed, however, editorial improvements have been made to update references to (draft) standards as well as to reflect changes
15、in Technical (Sub-) Committee structure. The text of the draft was submitted to the formal vote and was approved by CENELEC as CLC/TR 50450 on 2005-12-09. _ CLC/TR 50450:2006 2 Contents Introduction4 1 Scope4 2 References .4 3 Definitions and abbreviations .4 3.1 Definitions.4 3.2 Abbreviations 5 4
16、Clarification of the term resistibility .5 5 Recommendations .7 6 Conclusions .7 Annex A (informative) Electromagnetic phenomena with respect to physical ports .8 Annex B (informative) Bibliography .10 CLC/TR 50450:2006 3 Introduction As defined in the CENELEC/ETSI Report R0BT-001/ETR 238:1995 1), r
17、esistibility of equipment shall be treated in the context of electromagnetic phenomena. In general resistibility is considered as a quality issue. Quality aspects are not explicitly addressed by the essential requirements of New Approach Directives of the European Union. Resistibility should be view
18、ed as a consideration to be taken when designing a product for its intended installation or environment. Therefore, these aspects should be the object of specific standards. 1 Scope This document is intended to act as guidance for technical committees with respect to: a) producing resistibility stan
19、dards; b) identifying the relevant committees for preparing European resistibility standards. Safety (electrical etc.) and EMC are excluded from the scope of this report. 2 References This document makes reference to the following documents. IEC 60050-161, International Electrotechnical Vocabulary C
20、hapter 161: Electromagnetic compatibility IEC 60050-701, International Electrotechnical Vocabulary Chapter 701: Telecommunications, channels and networks CENELEC/ETSI R0BT-001/ETR 238 1), CENELEC/ETSI standardization programme for the development of Harmonized Standards related to Electro-Magnetic C
21、ompatibility (EMC) in the field of telecommunications Directive 89/336/EEC, Council Directive of 3 May 1989 on the approximation of the laws of the Member States relating to Electromagnetic Compatibility Directive 99/5/EC, Directive 99/5/EC of the European Parliament and of the Council relating Radi
22、o Equipment and Telecommunications Terminal Equipment and the Mutual Recognition of their Conformity Directive 98/13/EC, Directive 98/13/EC of the European Parliament and of the Council of 12 February 1998 relating to telecommunications terminal equipment and satellite earth station equipment, inclu
23、ding the mutual recognition of their conformity 3 Definitions and abbreviations 3.1 Definitions For the purposes of this report the following definitions apply. 3.1.1 immunity (to a disturbance) the ability of a device, equipment or system to perform without degradation in the presence of an electro
24、magnetic disturbance IEC 60050-161:1990, 161-01-20 3.1.2 resistibility the ability of telecommunication equipment or a network to withstand, in general without damage, the effects of certain electrical, magnetic and electromagnetic phenomena up to a certain, specified extent, and in accordance with
25、a specified criterion 1)The future designation of this document is presently being discussed by CLC/TC 210. CLC/TR 50450:2006 4 3.1.3 telecommunication any transmission, emission or reception of signs, signals, writing, images and sounds or intelligence of any nature by wire, radio, optical or other
26、 electromagnetic systems IEC 60050-701:1988, 701-01-05 3.1.4 telecommunication network a transmission medium intended for communication between equipments that may be located in separate buildings. NOTE 1 The term telecommunication network is defined in terms of its functionality, not its electrical
27、 characteristics. NOTE 2 A telecommunication network may be - publicly or privately owned; - subject to transient overvoltages due to atmospheric discharges and faults in power distribution systems; - subject to permanent longitudinal (common mode) voltages induced from nearby power lines or electri
28、c traction lines. NOTE 3 Examples of telecommunication networks are: - a public switched telephone network; - a public data network; - an ISDN network; - a private network with electrical interface characteristics similar to the above. 3.1.5 telecommunication port port which is intended to be connec
29、ted to telecommunication networks, Local Area Networks (e.g. Ethernet, Token Ring) and similar networks, either through physical connection (cable optical fibre) or radio connection NOTE In the latter case the antenna port is the telecommunication port. 3.2 Abbreviations EMC Electromagnetic compatib
30、ility ESD Electrostatic discharge LEMP Lightning electromagnetic pulse HEMP High altitude electromagnetic pulse RF Radio frequency TTE Telecommunication terminal equipment PSTTN Public Switching and Transmission Telecommunication Network 4 Clarification of the term resistibility This report consider
31、s resistibility (i.e. ability to withstand specified levels of electrical stress without being damaged in general) addressed to the needs of the whole of the telecommunication network, i.e. all types of networks, public and private, as well as any equipment installed in or connected to this network.
32、 The resistibility requirements are based on the following electromagnetic phenomena: lightning, power induction, earth potential rise, low-voltage power contact and electrostatic discharge. It should be noted that the EMC Directive 89/336/EEC (and its successor, Directive 2004/108/EC, which will co
33、me into force in January 2007) does not contain resistibility requirements (but immunity and emission requirements). Therefore, resistibility should not be subject to regulation under the EMC Directive 89/336/EEC, the Codified Terminal Directive 98/13/EC or the Radio Equipment and Telecommunications
34、 Terminal Equipment (R 2) intended application; 3) the mitigation methods in installations; 4) continuity of the service; 5) serviceability of the equipment (equipment installed in difficult to reach places, e.g. high mountains). Due to these aspects it can be useful that the European resistibility
35、standards recommend only one level of resistibility, whereas higher levels could be selected on the basis of aspects listed above by the manufacturer or the user of the equipment. It is considered that resistibility standards have to be used in engineering practice together with standards offering s
36、ystem approaches, mitigation methods etc., in a consistent manner. Table 1 summarizes, how resistibility and mitigation methods can be managed with such a system approach. In general, two different types of electromagnetic environments can be identified, which obviously require different measures de
37、pending on the kind and/or complexity of the telecommunication equipment attached or the installations concerned. Table 1 - Management of resistibility and mitigation methods Environment Equipment and system Managed by Unexposed and/or controlled environment (Urban area in general) Equipment: minimu
38、m resistibility required User may decide by himself on additional protective measures (risk assessment etc.) Manufacturers Users Exposed and/or uncontrolled environment (Rural area in general) Equipment: minimum resistibility required Recommended mitigation techniques installed in the installation o
39、r network User may decide by himself on additional protective measures (risk assessment etc.) Manufacturers Operators or owners of the installation or the network Users CLC/TR 50450:2006 6 5 Recommendations The resistibility requirements of telecommunication equipment should be given in dedicated st
40、andards separated from the EMC (emission and immunity) standards. The resistibility standards should be prepared on the basis of the relevant ITU-T K Recommendations and, if necessary, a liaison to ITU-T Study Group 5 should be established. ETSI, in particular WG EMC“ of Technical Committee ERM“, sh
41、ould take the responsibility in preparing resistibility standards for public switching and transmission network telecommunication (PSTTN) equipment, whereas CENELEC, in particular WG 3 of TC 210 in collaboration with WG 1 of TC 81X, should prepare resistibility standards for telecommunication termin
42、al equipment (TTE). Table 2 contains a summary of the recommendations that are addressed to the relevant Technical (Sub-) Committees of both CENELEC and ETSI, being in charge of standardization of telecommunications equipment and lines. Table 2 - Summary of recommendations to Technical (Sub-)Committ
43、ees of CENELEC and ETSI CENELEC ETSI TC 210 (WG 3) TC 210 TC 215 TC 81X (WG 1) TC ERM (WG EMC) Resistibility standard for PSTTN equipment X Resistibility standard for telecommunication terminal equipment X X 1)X Protection of telecommunication lines against lightning X 2)Protection of telecommunicat
44、ion lines against induction from power and traction lines X Description of both the controlled and uncontrolled environment X X X 1)For this aspect TC 210 should have the responsibility to prepare the resistibility standards in collaboration with TC 81X. 2)EN 50468 “Resistibility requirements to ove
45、rvoltages and overcurrents due to lightning for equipment having telecommunication port” is under preparation. 6 Conclusions Table 2 summarizes the more general conclusions outlined in this report. In addition, the following advice should be considered: 1) As resistibility is a quality issue, it sho
46、uld not be considered in the context of regulation; therefore, resistibility standards are not intended to be notified in the Official Journal of the European Commission. 2) ETSI and CENELEC are invited to define resistibility requirements into separate resistibility standards for PSTTN (public swit
47、ching and transmission telecommunication network) equipment and TTE (telecommunication terminal equipment) equipment respectively, taking due account of the ITU-T K-series Recommendations on this subject. If necessary, CENELEC and ETSI may send a liaison statement to ITU for collaboration in this fi
48、eld. 3) Resistibility requirements should be excluded from harmonized standards dealing with electrical safety and EMC (emission and immunity) requirements. Product committees should be instructed to remove resistibility requirements from both harmonized safety and EMC standards. For all other stand
49、ards, product committees should refer to dedicated resistibility standards. 4) Resistibility standards should be used in engineering practice together with standards offering system approaches in a consistent manner; therefore mitigation methods as detailed by CENELEC/TC 81X and other relevant European Standards provided by CENELEC or ETSI should be considered. CLC/TR 50450:2006 7 Annex A (informative) Electromagnetic phenomena with respect to physical ports Table A.1 has been developed to identify protection needs a
