1、BSI Standards PublicationBS EN 50288-5-2:2013Multi-element metallic cables used in analogue and digital communication and controlPart 5-2: Sectional specification for screened cables characterized up to 250 MHz Work area and patch cord cablesBS EN 50288-5-2:2013 BRITISH STANDARDNational forewordThis
2、 British Standard is the UK implementation of EN50288-5-2:2013. It supersedes BS EN 50288-5-2:2003 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 signa
3、lling.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 St
4、andardsLimited 2014ISBN 978 0 580 77101 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
5、 affectedBS EN 50288-5-2:2013EUROPEAN STANDARD EN 50288-5-2 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 50288-5-2:2013 E ICS 33.120.20 Supersedes EN 50288-5-2:2003 English version Multi-element metallic cables used in analogue and digital communication and control
7、 - Part 5-2: Sectional specification for screened cables characterized up to 250 MHz - Work area and patch cord cables Cbles mtalliques lments multiples utiliss pour les transmissions et les commandes analogiques et numriques - Partie 5-2: Spcification intermdiaire pour les cbles blinds pour applica
8、tions jusqu 250 MHz - Cbles de zone de travail et de brassage Mehradrige metallische Daten- und Kontrollkabel fr analoge und digitale bertragung - Teil 5-2: Rahmenspezifikation fr geschirmte Kabel bis 250 MHz - Gerteanschlusskabel und Schaltkabel This European Standard was approved by CENELEC on 201
9、3-03-18. 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 concerning such national standards may be
10、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 CENELEC member into its own language and notifi
11、ed 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 Republic of Macedonia, France, Germany, Gr
12、eece, 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 50288-5-2:2013EN 50288-5-2:2013 - 2 - Contents Page Foreword . 3 1 Scope . 4 2 Normat
13、ive 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 Cab
14、le 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 . 6 5.2 Mechanical tests 10 5.3 Environmental tests . 11 5.4 F
15、ire performance 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 50288-5-2:2013- 3 - EN 50288-5-2:2013 Foreword This document EN 50288-5-2:2013 has been prepared by CLC
16、/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 endorsement (dop) 2014-03-18 lat
17、est date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-03-18 This document supersedes EN 50288-5-2:2003. EN 50288-5-2:2013 includes the following significant technical changes with respect to EN 50288-5-2:2003: - the addition of the Blank Detail Speci
18、fication Annex; - a number minor corrections and updating of references; - the re-classification of ELFEXT to ACR-F. This Part 5-2 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
19、 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 50288-5-2:2013EN 50288-5-2:2013 - 4 - 1 Scop
20、e EN 50288-5-2 is a sectional specification for screened cables, characterised from 1 MHz up to 250 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 ar
21、ea and 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 perform
22、ance 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 specification are intended to o
23、perate 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,
24、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 technology - Generic cabl
25、ing 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 optical fibre cables -
26、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 and definitions For the
27、 purposes of this document the terms and definitions given in EN 50288-1 and the following apply. BS EN 50288-5-2:2013- 5 - EN 50288-5-2:2013 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 grou
28、nding 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 constr
29、uction 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
30、 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 pair or a quad. 4.4 Identification of
31、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 Where appropriate, screening of the cabling elements shall be applied in accordance with 4.5 of EN 5
32、0288-1. 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 50
33、288-5-2:2013EN 50288-5-2:2013 - 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 ac
34、cordance 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 complianc
35、e 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 Requirement 5.1.1.1 Conductor loop resistance (D1) 28,0 /100 m (D2) 34,0 /100 m 5.1.1.2 Conductor resistance u
36、nbalance 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 Mutual capacitance No requirement specified 5.1.
37、1.6 Capacitance unbalance to earth 1 200 pF/km BS EN 50288-5-2:2013- 7 - EN 50288-5-2:2013 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 250 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)5.1.2.3.2 D2 Longitudinal attenuation2) 3) 4) 7) 8)1 4 10 16 20 31,25 62,5 100 155 200 250 MHz 3,6 6.7 10.6 13,5 15,2 19,1 27,6 35.6 45,4 52.3
39、59,3 dB/100m 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 250 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 62,5 100 155 200 250 MHz 66,0 58,0 50 45,9 44 40,1
40、34,1 30 26,2 24,0 22,0 dB 70-20log(f), 1 MHz f 250 MHz (maximum 66 dB), values referenced to 100 m 5.1.2.7.1 Power sum near-end crosstalk 2) (PSNEXT) 1 4 10 16 20 31,25 62,5 100 155 200 250 MHz 3,1 5,8 9,0 11,4 12,8 16,1 23,2 29,9 38,0 43,7 49,5 dB/100m 1,5(1,82f+0,0169f+0,25/f), 1 MHz f 250 MHz 1 4
41、 10 16 20 31,25 62,5 100 155 200 250 MHz 75,4,0 66,3 60,3 57,2 55,8 52,9 48,4 45,3 42,4 40,8 39,3 dB 75,3-15log(f), 1 MHz f 250 MHz 1 4 10 16 20 31,25 62,5 100 155 200 250 MHz 72,3 63,3 57,3 54,2 52,8 49,9 45,4 42,3 39,4 37,8 36,3 dB 72,3-15log(f), 1 MHz f 250 MHz BS EN 50288-5-2:2013EN 50288-5-2:20
42、13 - 8 - 5.1.2.7.2 Power Sum Attenuation to crosstalk ratio at the far end 2) 6) (PSACR-F) 5.1.2.8 Mean characteristic impedance 100 5 , 120 5 , at 100 MHz 5.1.2.9 Return loss2) 5)5.1.2.10 Coupling attenuation Type I 85dB , 30 MHz f 100 MHz 85 - 20 log f/100 dB 100 MHz f 1000 MHz Type Ib 70dB , 30 M
43、Hz f 100 MHz 70 - 20 log f/100 dB 100 MHz f 1000 MHz Type II 55dB, 30 MHz f 100 MHz 55 - 20 log f/100 dB 100 MHz f 1000 MHz 5.1.2.11 Transfer impedance Grade 1 15 m/m at 1MHz; 10 m/m at 10 MHz; 30 m/m at 30 MHz or Grade 2 50 m/m at 1MHz; 100 m/m at 10 MHz; 200 m/m at 30 MHz 1 4 10 16 20 31,25 62,5 1
44、00 155 200 250 MHz 64,0 55,0 47,0 43,0 41,0 37,1 31,1 27,0 23,2 21,0 19,0 dB 67-20log(f), 1 MHz f 250 MHz (maximum 64 dB), values referenced to 100 m 4 8 10 16 20 31,25 62,5 100 155 200 250 MHz 23,1 24,5 25,0 25,0 25,0 23,6 21,5 20,1 18,8 18,0 17,3 dB 20+5log(f), 4 MHz f 10 MHz; 25dB, 10 MHz f 20 MH
45、z; 25,8-6log(f/20), 20 MHz f 250 MHz; BS EN 50288-5-2:2013- 9 - EN 50288-5-2:2013 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 i
46、nformation 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 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 onl
47、y. 5)For the measurement of return loss a test sample having a round trip loss 40 dB at any measured 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 explanation 7)bundled cables have a greater attenuation, Maximu
48、m 10 % increase 8)D2 is intended for data centres but not restricted to.BS EN 50288-5-2:2013EN 50288-5-2:2013 - 10 - 5.2 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
