1、BSI Standards PublicationBS EN 50288-4-2:2013Multi-element metallic cablesused in analogue and digitalcommunication and control -Part 4-2: Sectional specification forscreened cables characterised up to 600MHz Work area and patch cord cablesBS EN 50288-4-2:2013 BRITISH STANDARDNational forewordThis B
2、ritish Standard is the UK implementation of EN50288-4-2:2013. It supersedes BS EN 50288-4-2:2003 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/46, Cables, wires and waveguides, radio frequencyconnectors and accessories for communication and signall
3、ing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI Stan
4、dardsLimited 2014ISBN 978 0 580 77099 9ICS 33.120.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text a
5、ffectedBS EN 50288-4-2:2013EUROPEAN STANDARD EN 50288-4-2 NORME EUROPENNE EUROPISCHE NORM May 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B -
6、 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50288-4-2:2013 E ICS 33.120.20 Supersedes EN 50288-4-2:2003 English version Multi-element metallic cables used in analogue and digital communication and control -
7、 Part 4-2: Sectional specification for screened cables characterised up to 600 MHz - Work area and patch cord cables Cbles mtalliques lments multiples utiliss pour les transmissions et les commandes analogiques et numriques - Partie 4-2: Spcification intermdiaire pour les cbles blinds pour applicati
8、ons jusqu 600 MHz - Cbles de zone de travail et de brassage Mehradrige metallische Daten- und Kontrollkabel fr analoge und digitale bertragung - Teil 4-2: Rahmenspezifikation fr geschirmte Kabel bis 600 MHz - Gerteanschlukabel und Schaltkabel This European Standard was approved by CENELEC on 2013-03
9、-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 concerning such national standards may be obta
10、ined 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 CENELEC member into its own language and notified t
11、o 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 Republic of Macedonia, France, Germany, Greece
12、, 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 50288-4-2:2013EN 50288-4-2:2013 - 2 - Contents Page Foreword . 3 1 Scope . 4 2 Normative
13、references 4 3 Terms, definitions, symbols and abbreviations . 4 3.1 Terms and definitions . 4 3.2 Symbols and abbreviations . 5 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 Screening of cabling elements 5 4.6 Cable
14、 make-up 5 4.7 Filling compound 5 4.8 Interstitial fillers . 5 4.9 Screening of the cable core 6 4.10 Moisture barriers 6 4.11 Wrapping layers . 6 4.12 Sheath . 6 5 Tests and requirements for completed cables 6 5.1 Electrical tests . 7 5.2 Mechanical tests 10 5.3 Environmental tests . 11 5.4 Fire pe
15、rformance tests . 11 Annex A (informative) Maximum voltage, current and temperature rating for cables used for POE applications 12 Annex B (informative) Blank Detail Specification . 13 BS EN 50288-4-2:2013- 3 - EN 50288-4-2:2013 3 Foreword This document (EN 50288-4-2:2013) has been prepared by CLC/S
16、C 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 endorsement (dop) 2014-03-18 lates
17、t date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-03-18 This document supersedes EN 50288-4-2:2003. EN 50288-4-2:2013 includes the following significant technical changes with respect to EN 50288-4-2:2003: the addition of the Blank Detail Specifica
18、tion Annex; a number minor corrections and updating of references; the re-classification of ELFEXT to ACR-F. This Part 4-2 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 patent rights. CENELEC and/or
19、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 50288-4-2:2013EN 50288-4-2:2013 - 4 - 4 1 Scope EN
20、 50288-4-2 is a sectional specification for screened cables, characterised from 1 MHz up to 600 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 defined in EN 50173. Work area a
21、nd data centres 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 and environmental performance
22、 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 that contains the essential provisions for its application. The cables covered in this sectional specification are intended to operate
23、 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, in whole or in part, are no
24、rmatively 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 technology - Generic cabling sy
25、stems 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 optical fibre cables - Test m
26、ethods 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 and definitions For the purpo
27、ses of this document the terms and definitions given in EN 50288-1 and the following apply. BS EN 50288-4-2:2013- 5 - EN 50288-4-2:2013 5 3.1.1 screening of cable a cable is considered screened when the cable core is covered by a continuous conductive layer forming part of the shielding and groundin
28、g system Note 1 to entry: D.C. continuity has to be given and minimum shielding requirements have to be met. 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 4 Cable constructi
29、on 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. The solid conductor nominal diameter sha
30、ll 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 pair or a quad. 4.4 Identification of ca
31、bling 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 Where appropriate, screening of the cabling elements shall be applied in accordance with 4.5 of EN 502
32、88-1. Coverage is defined in EN 50290-2-1. 4.6 Cable make-up The cable elements shall be laid 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 BS EN 5028
33、8-4-2:2013EN 50288-4-2:2013 - 6 - 6 4.9 Screening of the cable core The screening of the cable core shall be applied in accordance with EN 50288-1, 4.9 Coverage is defined in EN 50290-2-1. 4.10 Moisture barriers Not applicable. 4.11 Wrapping layers Where wrapping layers are used they shall be in acc
34、ordance with EN 50288-1, 4.11 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 tables give the tests to be applied, together with the respective limits, in order to demonstrate compliance
35、with this specification. BS EN 50288-4-2:2013- 7 - EN 50288-4-2:2013 7 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 Requirement 5.1.1.1 Conductor loop resistance (D1) 28,0 /100 m (D2
36、) 34,0 /100 m 5.1.1.2 Conductor resistance unbalance 2,0 % 5.1.1.3 Dielectric strength conductor/conductor and conductor/screen 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 accordance with EN 50289-1-4 5.1.1.5 Mutu
37、al capacitance No requirement specified 5.1.1.6 Capacitance unbalance to earth 1 200 pF/km 5.1.2 High-frequency electrical and transmission measurements Table 2 - High-frequency electrical and transmission requirements EN 50288-1 sub-clause Parameter Requirement 5.1.2.1 Velocity of propagation Phase
38、 delay 534+36/f ns/100 m, 1 MHz f 600 MHz 5.1.2.2 Propagation delay difference (skew) 25 ns/100 m at 100 MHz 5.1.2.3.1 D1 Longitudinal attenuation 2) 3) 4) 8)5.1.2.3.2 D2 Longitudinal attenuation2) 3) 4) 8) 9)1 4 10 16 20 31,25 62,5 100 155 200 300 600 MHz 3.6 6.7 10.7 13.5 15.2 19.1 27,6 35,6 45.4
39、59.3 65.9 98.9 dB/100 m 3.225f+0,0333f+0,3/f), 1 MHz f 100 MHz 1 4 10 16 20 31,25 62,5 100 155 200 300 600 MHz 2,9 5,5 8,5 10,8 12,1 15,2 21,7 27,8 35,0 40,1 50,0 73,3 dB/100 m 1,5 (1,75f+0,01f+0,2/f), 1 MHz f 600 MHz BS EN 50288-4-2:2013EN 50288-4-2:2013 - 8 - 8 5.1.2.4 Near-end unbalance attenuati
40、on 40-10log(f) dB, 1 MHz f 600 MHz; 5.1.2.5 Near-end crosstalk (NEXT)2) 3) 4)5.1.2.6 Attenuation to crosstalk ratio at the far end 2) 6) 7)(ACR-F) 1 4 10 16 20 31,25 62,5 100 155 200 300 600 MHz 80,0 80,0 74,0 69,9 68,0 64,1 58,1 54,0 50,2 48,0 44,5 38,4 dB 94-20log(f), 1 MHz f 600 MHz; (Maximum 80
41、dB), values referenced to 100 m 5.1.2.7.1 Power sum near-end crosstalk 2 ) (PSNEXT) 5.1.2.7.2 Power Sum Attenuation to crosstalk ratio at the far end 2) 6) 7) (PSACR-F) 5.1.2.8 Mean characteristic impedance 100 5 , 120 5 , at 100 MHz 5.1.2.9 Return loss 5) 6) 5.1.2.10 Coupling attenuation 80 dB, 30
42、MHz f 100 MHz 80-20log(f/100) dB, 100 MHz f 1 000 MHz 5.1.2.11 Transfer impedance 15 m/m at 1 MHz; 10 m/m at 10 MHz; 30 m/m at 30 MHz 100 m/m at 100 MHz 1 4 10 16 20 31,25 62,5 100 155 200 300 600 MHz 80,0 80,0 80,0 80,0 80,0 80,0 75,1 72,4 69,6 67,9 65,3 60,8 dB 80,0 1 MHzf31,25 MHz; 80-15log(f/31,
43、25) 31,25 MHz f600 MHz 1 4 10 16 20 31,25 62,5 100 155 200 300 600 MHz 77,0 77,0 77,0 77,0 77,0 77,0 72,5 69,4 66,6 64,9 62,3 57,8 dB 77,0 1 MHzf31,25 MHz; 77-15log(f/31,25) 31,25 MHzf600 MHz 1 4 10 16 20 31,25 62,5 100 155 200 300 600 MHz 77,0 77,0 71,0 66,9 65,0 61,1 55,1 51,0 47,2 45,0 41,5 35,4
44、dB 91-20log(f), 1 MHz f 600 MHz; (Maximum 77 dB), values referenced to 100 m 4 8 10 16 20 31,25 62,5 100 155 250 350 600 MHz 23,1 24,5 25,0 25,0 25,0 23,6 21,5 20,1 18,8 17,3 17,3 17,3 dB 20+5log(f), 4 MHz f 10 MHz; 25,0 dB, 10 MHz f 20 MHz; 25-7log(f/20), 20 MHz f 250 MHz; 17,3dB 250 MHz f 600 MHz;
45、 BS EN 50288-4-2:2013- 9 - EN 50288-4-2:2013 9 1)For hybrid cables and multi-unit cables, PSNEXT between all non fibre recognised cable units shall 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
46、shall be used to determine compliance, rounded to one decimal place. 3)The attenuation shall meet values adjusted for temperature up to 60 C with a temperature coefficient of 0,2 % per degree rise above 20 C. 4)Values between 1 MHz and 4 MHz are for information only. 5)For the measurement of return
47、loss a test sample having a round trip loss 40 dB at any measured frequency should be used. 6)For cables complying with the requirements of this standard for attenuation and NEXT, ELFEXT and PSELFEXT need not be measured and are for information only. 7)ELFEXT is now re-classified as ACR-F, PSELFEXT
48、is now re-classified PSACR-F, see Annex A of EN 50288-1 for an explanation 8) bundled cables have a greater attenuation, Maximum 10 % increase 9) D2 is intended for data centres but not restricted to. BS EN 50288-4-2:2013EN 50288-4-2:2013 - 10 - 10 5.2 Mechanical tests Table 3 - Mechanical test requ
49、irements 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 minute / 100 mm Near-end crosstalk, return loss and characteristic impedance shall remain within the specified limits 5.2.4 Impact resistance of
