1、 ETSI ES 202 999 V1.1.1 (2010-11)ETSI Standard SAFETY;Remote Power Feeding Installations;Safety requirements for the erection and operationof information technology installationswith remote power feedingETSI ETSI ES 202 999 V1.1.1 (2010-11) 2Reference DES/SAFETY-00007 Keywords control, interface, ma
2、nagement, power, remote, safety, system ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individ
3、ual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document
4、Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the curre
5、nt status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduce
6、d except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2010. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI r
7、egistered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM l
8、ogo are Trade Marks registered and owned by the GSM Association. ETSI ETSI ES 202 999 V1.1.1 (2010-11) 3Contents Intellectual Property Rights 4g3Foreword . 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 6g33.1 Definitions 6
9、g33.2 Abbreviations . 7g34 Limits . 7g34.1 Permitted limit values in maintenance range 7g34.2 Equipment with which limit values are exceeded according to clause 4.1 . 7g35 General requirements . 7g36 Requirements on equipment and lines 8g37 Requirements on operating instructions . 9g38 Recommendatio
10、n of operating instructions (informative) 9g3History 11g3ETSI ETSI ES 202 999 V1.1.1 (2010-11) 4Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly availab
11、le for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server
12、(http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, o
13、r may become, essential to the present document. Foreword This ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications Equipment Safety (Safety). ETSI ETSI ES 202 999 V1.1.1 (2010-11) 51 Scope The present document contains safety requirements for the erection of informati
14、on technology installations with remote power feeding at an operating a.c. voltage exceeding 50 V (rms value) or an operating d.c. voltage exceeding 120 V, conductor to conductor and/or conductor to earth. It applies in addition to EN 60950-1 3 and EN 60950-21 4 and contains terms, requirements and
15、tests. If special standards are applicable for installations and parts of installations these shall take precedence; for example EN 60950-1 3 and EN 60950-21 4. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. Fo
16、r specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Refe
17、rence. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. 1 CENELEC EN 60417-1 (1999): “Graphic
18、al symbols for use on equipment. Overview and application“. 2 CENELEC EN 60900 (2004): “Live working. Hand tools for use up to 1 000 V a.c. and 1 500 V d.c“. 3 CENELEC EN 60950-1: “Information technology equipment - Safety - Part 1: General requirements“. 4 CENELEC EN 60950-21: “Information technolo
19、gy equipment - Safety - Part 21: Remote power feeding“. 5 ITU-T Directives concerning the protection of telecommunication lines against harmful effects from electric power and electrified railway lines (volume IV). 6 ITU-T Recommendation K.10: “Low frequency interference due to unbalance about earth
20、 of telecommunication equipment“. 2.2 Informative references The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. Not applicable. ETSI ETSI ES 202 999 V1.1.1 (2010-11) 63 Definitions and ab
21、breviations 3.1 Definitions For the purposes of the present document, the following terms and definitions given in EN 60950-1 3, EN 60950-21 4 and the following apply: load power-fed point: load power-fed point extracts electric power from the remote power feeding circuits via its remote power feedi
22、ng equipment remote power feeding: supply of electric power in the form of direct or alternating current to information technology installations through cables of the associated telecommunication line remote power feeding cables: cables of a telecommunication line which are used for remote power fee
23、ding and may at the same time be telecommunication cables NOTE: They are components of the information technology installation. remote power feeding circuit: circuit which is established by interconnecting remote power feeding devices and cables to form a functional entity NOTE: See also RFT circuit
24、 (remote feeding telecommunication circuit), RFT-C circuits and RFT-V circuits according to EN 60950-21 4. remote power feeding devices: devices used for remote power feeding, e.g. to supply or extract electric power remote power feeding equipment: equipment from which the electric power necessary f
25、or the remote power feeding of information technology installations is extracted NOTE 1: It is a component of the information technology installation. NOTE 2: For information technology equipment see EN 60950-1 3. remote power feeding point: remote power feeding point supplies remote power feeding c
26、ircuits with electrical current via its remote power feeding equipment remote power feeding section: part of remote power feeding circuits located between a remote power feeding point and the immediately following power-fed point, or between two adjacent power-fed points RFT-C circuit: RFT circuit w
27、hich is so designed and protected that under normal operating conditions and single fault conditions, the currents in the circuit do not exceed defined values NOTE: See EN 60950-21 4. RFT-V circuit: RFT circuit which is so designed and protected that under normal operating conditions and single faul
28、t conditions, the voltages are limited and the accessible area of contact is limited NOTE: See EN 60950-21 4. type of remote power feeding: electrical operating mode of the remote power feed in a remote power feeding circuit. It is specified by particular characteristics of the circuit configuration
29、 and power feeding method. A distinctions is made in particular between the following ones: a.c. remote power feeding: power-fed points receive an a.c. supply; d.c. remote power feeding: power-fed points receive a d.c. supply; double-ended remote power feeding: remote power feeding circuit has two r
30、emote power feeding points; external remote power feeding: different cables are used for the remote power feeding and telecommunications connections; internal remote power feeding: same cables are used for the remote power feeding and telecommunications connections; ETSI ETSI ES 202 999 V1.1.1 (2010
31、-11) 7 parallel remote power feeding: power-fed points within a remote power feeding circuit are connected in parallel; series remote power feeding: power-fed points within a remote power feeding circuit are connected in series; single-ended remote power feeding: the remote power feeding circuit has
32、 only one remote power feeding point. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: a.c. alternating current d.c. direct currentRFT circuit Remote Feeding Telecommunication circuit RFT-C circuit Remote Feeding Telecommunication-Current circuit RFT-V c
33、ircuit Remote Feeding Telecommunication-Voltage circuit 4 Limits 4.1 Permitted limit values in maintenance range For limit values during normal operation and during single fault conditions see EN 60950-21 4, clause 6. 4.2 Equipment with which limit values are exceeded according to clause 4.1 For equ
34、ipment with which the limit values according to clause 4.1 are exceeded, EN 60950-1 3 shall be valid along with clauses 5 to 7 of the present document. 5 General requirements 5.1 Remote power supply equipment shall be operated in restricted access locations according to EN 60950-1 3, see clause 1.2.
35、7.3. Remotely fed equipment e.g. a repeater, shall also be accommodated in locations with limited access. For example, joint boxes and chambers in cable systems which can be opened only with the aid of tools shall comply with the requirements for restricted limited access locations. 5.2 Voltage sour
36、ces where the output current is limited according to clause 4.1 shall always switch themselves off reliably when exceeding these limit values by +10 %. Test: Check the current control circuits switch-off level. 5.3 Remote power circuits according to clause 4.2 shall have a monitoring system for dete
37、ction of faults and unbalance. Any deviation from target values shall activate an alarm or be displayed to people in the operator service area or in the restricted access location. Test: Make the monitoring system respond to earth faults or unbalance. 5.4 Remote power devices shall be constructed so
38、 as to provide protection against an electrical shock or power hazard according to EN 60950-1 3. Test: According to EN 60950-1 3. ETSI ETSI ES 202 999 V1.1.1 (2010-11) 85.5 All cables (according to the hazard levels for voltage and/or current of clause 4.2) shall be continuously labelled with the sy
39、mbol for the telephone and the telephone adapter (IEC 60417 1-5090). In addition to this symbol the symbols for hazardous electrical voltage (IEC 60417 1-5036; lightning symbol without triangle) has to be added, also in a longitudinal direction. Table 1 is a guide for the placement of the symbols. T
40、able 1: Guide to placement of symbols on the remote power cable Diameter D over cable sheath or jacketing mm Height h of the symbol mm Spacing k between adjacent symbols mm Spacing l between symbol pairs mm up to 30 12 6 25 over 30 20 10 40 Under certain circumstances, labelling at the ends of the r
41、emote power feeding sections is sufficient. Test: Visual inspection. 5.6 Information referring to the safety requirements in the operating instructions shall be clearly visible at the installation site of the remote power feeding equipment. 5.7 The isolation points of remote power lines at each end
42、of each remote power feeding section shall be labeled - besides usual labelling - such that different remote power circuits cannot be mixed up. 6 Requirements on equipment and lines 6.1 Remote power units or corresponding switching units shall be designed so that the remote power source can be switc
43、hed off at an easily accessible point and reactivation of the remote power source can be prevented e.g. by a lock. Test: Visual inspection. 6.2 Equipment for the detection of disconnected remote power circuits shall be constructed so that they are only effective when the remote power sources are swi
44、tched off. Test: Visual inspection. 6.3 In the case of the feeding of remote a.c. power sources via the central conductors of coaxial pairs, the outer wires of the individual coaxial pairs shall be connected to the ends of the remote power circuit and to the conductive cable jacketing at all remotel
45、y fed points. Test: Visual inspection. 6.4 In the case of influence through power mains installations, the measures according to 6.4 a) and 6.4 b) shall be applied along with safety protection according to ITU-T Recommendation K.10 6 and the ITU-T directives concerning the protection of telecommunic
46、ation lines against harmful effects from electric power and electrified railway lines 5. a) Remote power feeding shall be balanced to earth. Test: Measurements of the partial voltages to earth. b) In the case of d.c. remote power sources via the central conductors of coaxial pairs, operation with no
47、n-earthed outer wires may be used to protect connected units (floating potential). Test: Measurement of the resistance to earth potential (type testing). ETSI ETSI ES 202 999 V1.1.1 (2010-11) 97 Requirements on operating instructions Operating instructions for safety equipment and electrical safety
48、services shall be available. They shall take into account all the particulars of the installation: Operating instructions shall be provided for each telecommunication installation with remote power feeding. The safety requirements in the text shall be highlighted. 8 Recommendation of operating instr
49、uctions (informative) The following proposals for content in an operating instruction are normally covered by national regulation. However, the information below is offered as a reminder on what an operating instruction should contain. The persons that are allowed to carry out work on remote power feeding devices. should be trained electricians or suitably qualified individuals working under the instructions of a responsible person. This can be done by: a person responsible for the work; a person responsib
