1、BSI Standards PublicationBS EN 50288-3-2:2013Multi-element metallic cables used in analogue and digital communication and controlPart 3-2: Sectional specification for unscreened cables characterised up to 100 MHz Work area and patch cord cablesBS EN 50288-3-2:2013 BRITISH STANDARDNational forewordTh
2、is British Standard is the UK implementation of EN 50288-3-2:2013. It supersedes BS EN 50288-3-2:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/46, Cables, wires and waveguides, radio frequency connectors and accessories for communication and
3、 signalling.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013.Published b
4、y BSI Standards Limited 2013ISBN 978 0 580 77097 5 ICS 33.120.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2013.Amendments/corrigenda issued si
5、nce publicationDate T e x t a f f e c t e dBS EN 50288-3-2:2013EUROPEAN STANDARD EN 50288-3-2 NORME EUROPENNE EUROPISCHE NORM May 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Mana
6、gement Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50288-3-2:2013 E ICS 33.120.20 Supersedes EN 50288-3-2:2003 English version Multi-element metallic cables used in analogue and
7、 digital communication and control - Part 3-2: Sectional specification for unscreened cables characterised up to 100 MHz - Work area and patch cord cables Cbles mtalliques lments multiples utiliss pour les transmissions et les commandes analogiques et numriques - Partie 3-2: Spcification intermdiair
8、e pour les cbles non blinds pour applications jusqu 100 MHz - Cbles de zone de travail et de brassage Mehradrige metallische Daten- und Kontrollkabel fr analoge und digitale bertragung - Teil 3-2: Rahmenspezifikation fr ungeschirmte Kabel bis 100 MHz - Gerteanschlusskabel und Schaltkabel This Europe
9、an Standard was approved by CENELEC on 2013-03-18. CENELEC members are bound to comply with the CEN/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
10、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 versions (English, French, German). A version in any other language made by translation under the responsibility of a CENEL
11、EC 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 committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav
12、Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 50288-3-2:2013EN 50288-3-2:2013 - 2 - Conte
13、nts Page Foreword 3 1 Scope 4 2 Normative references . 4 3 Terms, definitions, symbols and abbreviations 4 3.1 Terms and definitions 4 3.2 Symbols and abbreviations 4 4 Cable construction . 5 4.1 Conductor . 5 4.2 Insulation 5 4.3 Cabling elements 5 4.4 Identification of cabling elements 5 4.5 Scree
14、ning of cabling elements . 5 4.6 Cable make-up . 5 4.7 Filling compound . 5 4.8 Interstitial fillers 5 4.9 Screening of the cable core . 5 4.10 Moisture barriers . 5 4.11 Wrapping layers 5 4.12 Sheath 6 5 Tests and requirements for completed cables . 6 5.1 Electrical tests 6 5.2 Mechanical tests . 9
15、 5.3 Environmental tests 10 5.4 Fire performance tests 10 Annex A (informative) Maximum voltage, current and temperature rating for cables used for POE applications 11 Annex B (informative) Blank Detail Specification 12 BS EN 50288-3-2:2013- 3 - EN 50288-3-2:2013 Foreword This document EN 50288-3-2:
16、2013 has been prepared by CLC/SC 46XC “Multicore, Multipair and Quad Data communication cables,“ of CLC/TC 46X, “Communication cables“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by end
17、orsement (dop) 2014-03-18 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-03-18 This document supersedes EN 50288-3-2:2003. EN 50288-3-2:2013 includes the following significant technical changes with respect to EN 50288-3-2:2003: the additio
18、n of the Blank Detail Specification Annex; a number minor corrections and updating of references; the re-classification of ELFEXT to ACR-F. This Part 3-2 is to be read in conjunction to EN 50288-1. Attention is drawn to the possibility that some of the elements of this document may be the subject of
19、 patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). BS EN 50288-3-2:2013EN 5028
20、8-3-2:2013 - 4 - 1 Scope EN 50288-3-2 is a sectional specification for unscreened cables, characterised from 1 MHz up to 100 MHz, to be used as work area cables to connect a telecommunications outlet to the terminal equipment and for patch cord cables to establish connections on a patch panel as def
21、ined in EN 50173. Work area and data centre cables may also be used as patch cord cables in any distributor of a generic building wiring system to interconnect with equipment or to cross-connect between cabling systems. This sectional specification contains the electrical, mechanical, transmission a
22、nd environmental performance characteristics of the cables, when tested in accordance with the referenced test methods. This sectional specification is to be read in conjunction with EN 50288-1 which contains the essential provisions for its application. The cables covered in this sectional specific
23、ation are intended to operate with voltages and currents normally encountered in communication systems. These cables are not intended to be used in conjunction with low impedance sources, for example, the electric power supplies of public utility mains. 2 Normative references The following documents
24、, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50173 Series Information te
25、chnology - Generic cabling systems EN 50288-1 Multi-element metallic cables used in analogue and digital communication and control - Part 1: Generic specification EN 50289 Series Communication cables - Specifications for test methods EN 50290 Series Communication cables EN 60811 Series Electric and
26、optical fibre cables - Test methods for non-metallic materials (IEC 60811 series) IEC 60189-2 Low-frequency cables and wires with PVC insulation and PVC sheath - Part 2: Cables in pairs, triples, quads and quintuples for inside installations 3 Terms, definitions, symbols and abbreviations 3.1 Terms
27、and definitions For the purposes of this document the terms and definitions given in EN 50288-1 apply. 3.2 Symbols and abbreviations For the purposes of this document, the following abbreviations apply. EX Exogenous (derived or originating externally) POE Power Over Ethernet BS EN 50288-3-2:2013- 5
28、- EN 50288-3-2:2013 4 Cable construction 4.1 Conductor The conductor shall be solid or stranded copper and meet the requirements of EN 50288-1, 4.1. The stranded conductor shall consist of seven wires each with a nominal diameter of 0,10 mm to 0,21 mm. The conductor shall be plain or metal coated. T
29、he solid conductor nominal diameter shall be 0,4 mm to 0,8 mm. NOTE Constructions with copper clad conductors do not meet the requirements 4.2 Insulation The insulation shall be of a suitable material according to the relevant part of EN 50290-2. 4.3 Cabling elements The cable element shall be a pai
30、r or a quad. 4.4 Identification of cabling elements Unless otherwise specified, the colour coding for identification is given in IEC 60189-2. The colours shall meet the requirements of EN 50288-1, 4.4. 4.5 Screening of cabling elements Not applicable. 4.6 Cable make-up The cable elements shall be la
31、id up in concentric layer(s) or units to form the cable core. 4.7 Filling compound Not applicable. 4.8 Interstitial fillers Where fillers are used they shall meet the requirements of EN 50288-1, 4.8. 4.9 Screening of the cable core Not applicable. 4.10 Moisture barriers Not applicable. 4.11 Wrapping
32、 layers Where wrapping layers are used they shall be in accordance with EN 50288-1, 4.11. BS EN 50288-3-2:2013EN 50288-3-2:2013 - 6 - 4.12 Sheath The sheath shall be of a suitable material according to the relevant part of EN 50290-2. 5 Tests and requirements for completed cables The following table
33、s give the tests to be applied, together with the respective limits, in order to demonstrate compliance with this specification. 5.1 Electrical tests 5.1.1 Low-frequency and d.c. electrical measurements Table 1 - Low-frequency and d.c. electrical measurements EN 50288-1 sub-clause Parameter Requirem
34、ent 5.1.1.1 Conductor loop resistance (D1) 28,0 /100 m (D2) 34,0 /100 m 5.1.1.2 Conductor resistance unbalance 2,0 % 5.1.1.3 Dielectric strength conductor/conductor 1,0 kV d.c. or 0,7 kV a.c. for 1 min or 2,5 kV d.c. or 1,7 kV a.c. for 2 s 5.1.1.4 Insulation resistance 5 000 M.km when tested in acco
35、rdance with EN 50289-1-4 5.1.1.5 Mutual capacitance No requirement specified 5.1.1.6 Capacitance unbalance to earth 1 200 pF/km BS EN 50288-3-2:2013- 7 - EN 50288-3-2:2013 5.1.2 High-frequency electrical and transmission measurements Table 2 - High-frequency electrical and transmission requirements
36、EN 50288-1 sub-clause Parameter Requirement 5.1.2.1 Velocity of propagation Phase delay 534+36/f ns/100 m, 1 MHz f 100 MHz 5.1.2.2 Propagation delay difference (skew) 45 ns/100 m at 100 MHz 5.1.2.3.1 D1 Longitudinal attenuation2) 3) 4) 7)1 4 10 16 20 31,25 62,5 100 MHz 3,2 6,0 9,5 12,1 13,6 17,1 24,
37、8 32,0 dB/100 m 1,5 (1,9108f+0,0222f+0,2/f), 1 MHz f 100 MHz 5.1.2.3.3 D2 Longitudinal attenuation2) 3) 4) 7) 8)1 4 10 16 20 31,25 62,5 100 MHz 3,2 6,73 10,67 13,51 15,16 19,12 27,62 35,61 dB/100 m 3,225f+0,0333f+0,3/f), 1 MHz f 100 MHz 5.1.2.4 Near-end unbalance attenuation 40-10log(f) dB, 1 MHz f
38、100 MHz; 5.1.2.5 Near-end crosstalk (NEXT)1) 2)5.1.2.6 Attenuation to crosstalk ratio at the far end 2) 6) (ACR-F) 1 4 10 16 20 31,25 62,5 100 MHz 64 52 44 40 38 34 28 24 dB 64-20log(f), 1 MHz f 100 MHz; values referenced to 100 m 5.1.2.7.1 Power sum near-end crosstalk 2) 4)(PSNEXT)1 4 10 16 20 31,2
39、5 62,5 100 MHz 65,0 56,3 50,3 47,3 45,8 42,9 38,4 35,3 dB 65,0-15log(f) 1 MHz f 100 MHz 1 4 10 16 20 31,25 62,5 100 MHz 62,3 53,3 47,3 44,2 42,8 39,9 35,4 32,3 dB 62,3-15log(f), 1 MHz f 100 MHz BS EN 50288-3-2:2013EN 50288-3-2:2013 - 8 - 5.1.2.7.2 Power Sum Attenuation to crosstalk ratio at the far
40、end 2) 6) (PSACR-F) 5.1.2.8 Mean characteristic impedance 100 5 , 120 5 , at 100 MHz 5.1.2.9 Return loss 5) 5.1.2.10 Coupling attenuation 40 dB, 30 MHz f 100 MHz; 40-20log(f/100) dB, 100 MHz f 1 000MHz 1)For hybrid cables and multi-unit cables, PSNEXT between all non fibre recognised cable units sha
41、ll be 3 dB better than the specified pair to pair NEXT at all specified frequencies. 2) The values in the table are for information only. The formula given shall be used to determine compliance, rounded to one decimal place. 3) The attenuation shall meet values adjusted for temperature up to 40 C wi
42、th a temperature coefficient of 0,4 % per degree rise and for temperatures from 40 C to 60 C with a temperature coefficient of 0,6 %, above 20 C. 4) Values between 1 MHz and 4 MHz are for information only. 5) For the measurement of return loss a test sample having a round trip loss 40 dB at any meas
43、ured frequency should be used. 6) ELFEXT is now re-classified as ACR-F PSELFEXT is now re-classified PSACR-F, see Annex A of EN 50288-1 for an explanation 7)bundled cables have a greater attenuation, Maximum 10% increase 8)D2 is intended for data centres but not restricted to. 1 4 10 16 20 31,25 62,
44、5 100 MHz 61 49 41 37 35 31 25 21 dB 61-20log(f), 1 MHzf100 MHz; values referenced to 100 m 4 8 10 16 20 31,25 62,5 100 MHz 23,1 24,5 25,0 25,0 25,0 23,6 21,5 20,1 dB 20+5log(f), 4 MHz f 10 MHz; 25dB, 10 MHz f 20 MHz; 25-7log (f/20), 20 MHz f 100 MHz; BS EN 50288-3-2:2013- 9 - EN 50288-3-2:2013 5.2
45、Mechanical tests Table 3 - Mechanical test requirements EN 50288-1 sub-clause Parameter Requirement 5.2.1 Conductor elongation at break EN 50289-3-2 10 % 5.2.2 Shrinkage of insulation EN 50289-3-4 5 % 5.2.3 Crush resistance of the cable EN 50289-3-5 1 000 N / 1 min / 100 mm Near-end crosstalk, retur
46、n loss and characteristic impedance shall remain within the specified limits 5.2.4 Impact resistance of the cable EN 50289-3-6 12,5 mm radius / 1 J / 3 impacts at 1 m from the measured end Near-end crosstalk, return loss and characteristic impedance shall remain within the specified limits 5.2.5 Abr
47、asion resistance of the sheath markings EN 50289-3-8 Markings shall remain legible after 10 strokes Force 4 N 5.2.6 Simulated installation testing of the cable 5.2.6.1 Simulated installation testing of the cable Single bend EN 50289-3-9:2001, Clause 4, procedure 2 Single bend 4 dia / 4 cycles Near-e
48、nd crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits 5.2.6.2 Simulated installation testing of the cable “S” bend EN 50289-3-9:2001, Clause 8 “S” bend 8 dia / 100 m / 1 cycle / 120 deg / 1 m/s Near-end crosstalk, return loss, cha
49、racteristic impedance and coupling attenuation (u/c) shall remain within the specified limits 5.2.7 Tensile performance EN 50289-3-16 combined with 5.2.6 of this standard Load shall be 50 N per mm2per conductor Near-end crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits 5.2.8 Flexing performance of the cable (Only applicable for cables with s
