1、 ETSI EN 300 132-2 V2.4.6 (2011-12) Environmental Engineering (EE); Power supply interface at the input to telecommunications and datacom (ICT) equipment; Part 2: Operated by -48 V direct current (dc) European Standard ETSI ETSI EN 300 132-2 V2.4.6 (2011-12) 2Reference REN/EE-02016 Keywords interfac
2、e, power supply 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 Individual copies of the presen
3、t 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 Format (PDF). In case of
4、 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 current status of this and ot
5、her 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 reproduced except as authorized b
6、y written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2011. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and
7、 LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 300 132-2 V2.4.6 (2011-12) 3Contents Intellectual Property Rights 5g3Foreword . 5g31 Scope 6g
8、32 References 6g32.1 Normative references . 7g32.2 Informative references 7g33 Definitions, symbols and abbreviations . 7g33.1 Definitions 7g33.2 Symbols 8g33.3 Abbreviations . 8g34 Requirements 9g34.1 Nominal voltage . 9g34.2 Normal service voltage range at interface “A“ . 9g34.3 Abnormal service v
9、oltage range at interface “A“ . 10g34.3.1 Abnormal service voltage range under steady state conditions 10g34.3.2 Abnormal conditions: voltage variations, dips and short interruptions . 10g34.3.3 Voltage transients . 11g34.3.3.1 Voltage transient due to short-circuit and protective device clearance .
10、 11g34.3.3.2 Short voltage transient due to switching and lightning . 11g34.3.4 Recovery from voltage transients . 11g34.4 Voltage changes due to the regulation of the power supply . 12g34.5 Power supply protection at interface “A“ . 12g34.6 Maximum current drain 12g34.7 Inrush Current on connection
11、 of interface “A“ . 13g34.7.1 Limits 13g34.7.2 Measurements . 14g34.8 Conducted immunity requirements of the telecommunications equipment at interface “A“: narrowband noise . 15g34.9 Conducted emissions requirements of the telecommunications and datacom (ICT) equipment at interface “A“ . 17g35 Earth
12、ing and bonding . 18g3Annex A (normative): Identification of interface “A“ 19g3Annex B (informative): -60 VDCsystems 20g3Annex C (informative): Guide for measuring inrush current and for transferring the recorded pulses onto the limit chart . 21g3C.1 Measurement 21g3C.2 Pulse waveform transformation
13、 21g3C.3 Measurement of inrush current with filter capacitor current pulses . 24g3Annex D (informative): Test arrangements for the injection of electrical noise at interface “A“ 27g3Annex E (informative): Wideband noise 28g3E.1 Emission of wideband noise . 28g3E.1.1 Assessment of wideband noise . 28
14、g3E.2 How to calculate wideband emission . 28g3Annex F (informative): Protection dimensioning 32g3ETSI ETSI EN 300 132-2 V2.4.6 (2011-12) 4Annex G (informative): Effects of protective device operation transients in the power distribution . 33g3Annex H (informative): Bibliography . 34g3History 35g3ET
15、SI ETSI EN 300 132-2 V2.4.6 (2011-12) 5Intellectual 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 available for ETSI members and non-members, and can be found in
16、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 (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no
17、 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, or may become, essential to the present document. Foreword This European S
18、tandard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE). The present document concerns the requirements for the interface between telecommunications and datacom (ICT) equipment and its power supply, and includes requirements relating to its stability and measurement
19、. Various other references and detailed measurement and test arrangements are contained in informative annexes. The present document is part 2 of a multi-part deliverable covering Environmental Engineering (EE); Power supply interface at the input to telecommunications and datacom (ICT) equipment, a
20、s identified below: Part 1: “Operated by alternating current (ac) derived from direct current (dc) sources“; Part 2: “Operated by -48 V direct current (dc)“; Part 3-0: “Operated by rectified current source, alternating current source or direct current source up to 400 V, Sub-part 0: Overview“; Part
21、3-1: “Operated by rectified current source, alternating current source or direct current source up to 400 V; Sub-part 1: Direct current source up to 400 V“; Part 3-2: “Operated by rectified current source, alternating current source or direct current source up to 400 V; Sub-part 2: Alternating up to
22、 400 V solution“; Part 3-3: “Operated by rectified current source, alternating current source or direct current source up to 400 V; Sub-part 3: Rectified current up to 400 V solution“. National transposition dates Date of adoption of this EN: 9 December 2011 Date of latest announcement of this EN (d
23、oa): 31 March 2012 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 30 September 2012 Date of withdrawal of any conflicting National Standard (dow): 30 September 2012 ETSI ETSI EN 300 132-2 V2.4.6 (2011-12) 61 Scope The present document contains requirements and
24、 measurements methods for the physical interface that is situated between the power supply system(s) and the power consuming telecommunications and datacom (ICT) equipment; this point is called interface “A“ as defined in clause 4. The purpose of the present document is to use a power supply system
25、with the same characteristics for all telecommunications and datacom (ICT) equipment defined in the area of application: - to facilitate inter working of different (types of) load units; - to facilitate the standardization of telecommunications and datacom (ICT) equipment; - to facilitate the instal
26、lation, operation and maintenance in the same network of telecommunications and datacom (ICT) equipment and systems from different origins. The present document aims at providing electrical compatibility between the power supply equipment and the power consuming telecommunications and datacom (ICT)
27、equipment, and also between different system blocks connected to the same power supply. The requirements are defined for: - the output of the power supply equipment or power supply installation of telecommunications centres providing power at the interface “A“; - the power supply input of any type o
28、f telecommunications and datacom (ICT) equipment installed at telecommunication centres that are connected to interface “A“ powered by DC; - any type of telecommunications and datacom (ICT) equipment, installed in access networks and customers premises, the DC interface “A“ of which is also used by
29、equipment requiring a supply to the present document. - any type of telecommunication and datacom (ICT) equipment powered by DC, used in the fixed and mobile networks installed in different locations as building, shelter, street cabinet. Disturbances on the power supply interface “A“ relating to the
30、 continuous wave phenomena below 20 kHz are covered within the present document. The present document does not cover safety requirements, they are covered by relevant safety standards. The present document does not cover EMC requirements, they are covered by relevant EMC standards. NOTE 1: The prese
31、nt document is applicable only to -48 VDCpower supply interfaces. However, during a transitional period, other DC voltages may be used in existing installations. Annex B gives guidance on working in conjunction with existing -60 VDCsupply systems. NOTE 2: The DC voltage at interface “A“ may be deriv
32、ed from the AC primary supply. The DC supply may incorporate a backup battery 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references,
33、 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/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of
34、 publication, ETSI cannot guarantee their long term validity. ETSI ETSI EN 300 132-2 V2.4.6 (2011-12) 72.1 Normative references The following referenced documents are necessary for the application of the present document. 1 CENELEC EN 60269-1: “Low-voltage fuses - Part 1: General requirements“. 2 CE
35、NELEC EN 60934: “Circuit-breakers for equipment (CBE)“. 3 ETSI EN 300 253: “Environmental Engineering (EE); Earthing and bonding of telecommunication equipment in telecommunication centres“. 4 ITU-T Recommendation O.41: “Psophometer for use on telephone-type circuits“. 5 CENELEC EN 61000-4-5: “Elect
36、romagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test“. 6 IEC 60050-601: “International Electrotechnical Vocabulary. Chapter 601: Generation, transmission and distribution of electricity - General“ (Area 826 “Electrical installations“, section 826-11 “Vo
37、ltages and currents“). 7 CENELEC EN 61000-4-29: “Electromagnetic compatibility (EMC) -Part 4-29: Testing and measurement techniques -Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests“. 2.2 Informative references The following referenced documents are no
38、t necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 ITU-T Recommendation Q.551: “Transmission characteristics of digital exchanges“. i.2 ITU-T Recommendation Q.552: “Transmission characteristics at 2-wire analogue interfaces
39、of digital exchanges“. i.3 ITU-T Recommendation Q.553: “Transmission characteristics at 4-wire analogue interfaces of digital exchanges“. i.4 ITU-T Recommendation Q.554: “Transmission characteristics at digital interfaces of digital exchanges“. i.5 ETSI TR 100 283: “Environmental Engineering (EE); T
40、ransient voltages at Interface “A“ on telecommunications direct current (dc) power distributions“. i.6 US Department of Defence MIL-STD-461E: “Requirements for the control of electromagnetic interference characteristics of subsystems and equipment“. 3 Definitions, symbols and abbreviations 3.1 Defin
41、itions For the purposes of the present document, the following terms and definitions apply: abnormal service voltage range: range of steady-state voltage over which the equipment will not be expected to maintain normal service but will survive undamaged customer premises: any location which is the s
42、ole responsibility of the customer fully equipped equipment: configuration that corresponds to the maximum power consumption measured at -48 VDCwith the equipment in operating conditions (e.g. not in standby mode) ETSI ETSI EN 300 132-2 V2.4.6 (2011-12) 8NOTE: When there are several fully equipped c
43、onfigurations because of different combinations of possible boards, the configuration with the boards that gives the highest power consumption shall be considered. interface “A“: terminals at which the power supply is connected to the system block NOTE 1: See also figure 1 and annex A. NOTE 2: This
44、is a functional definition and not an exact depiction of the physical location. malfunction: termination of the normal service maximum steady state input current (Im): maximum steady state input current, stated by the manufacturer, for a fully equipped equipment under test connected to interface “A“
45、 at nominal voltage nominal voltage: value of the voltage by which the electrical installation or part of the electrical installation is designated and identified 6 normal operating voltage range: voltage range at interface “A“ where the system operates most of the time, e.g. in general linked to ba
46、ttery floating voltage normal service: service mode where telecommunications and datacom (ICT) equipment operates within its specification which includes a defined restart time after malfunction or full interruption normal service voltage range: range of steady-state voltages over which the equipmen
47、t will maintain normal service operating voltage: value of the voltage under normal conditions, at a given instant and a given point of the system 6 power supply: power source to which telecommunications equipment is intended to be connected system block: functional group of equipment depending for
48、its operation and performance on its connection to the same power supply NOTE: A system block may consist of equipment or a functional group of equipment. Different examples of configurations at interface “A“ are given in annex A. telecommunication centre: location where telecommunications and datac
49、om (ICT) equipment is installed and which is the sole responsibility of the operator telecommunications and datacom equipment: Information and Communication Technology equipment (ICT) 3.2 Symbols For the purposes of the present document, the following symbols apply: Itinstantaneous inrush current Immaximum steady state input current L inductance of inductive element of LISN R resistance of resistive element of LISN t time Zccapacitive impedance of immunity measurement circuit Zmresistive impedance of immunity measurement circuit s microsecond 3
