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BS en 50288-6!1!03 Mult-Element Metallic Cables Used for Analogue and Digital Communication and Control Part 6-1 | Cable | Electrical Conductor
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Part 6-1: Sectional specification for unscreened cables characterised up to 250 MHz Horizontal and building backbone cables
The European Standard EN 50288-6-1:2003 has the status of a British Standard
This British Standard is the official English language version of EN 50288-6-1:2003. The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.
A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled International Standards Correspondence Index, or by using the Search facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
This British Standard was published under the authority of the Standards Policy and Strategy Committee on 2 February 2004
BSI 2 February 2004
ISBN 0 580 43345 5
Multi-element metallic cables used in analogue and digital communication and control Part 6-1: Sectional specification for unscreened cables characterised up to 250 MHz Horizontal and building backbone cables
Cbles mtalliques lments multiples utiliss pour les transmissions et les commandes analogiques et numriques Partie 6-1: Spcification intermdiaire pour les cbles non blinds pour applications jusqu' 250 MHz Cbles horizontaux et verticaux de btiment Mehradrige metallische Datenund Kontrollkabel fr analoge und digitale bertragung Teil 6-1: Rahmenspezifikation fr ungeschirmte Kabel bis 250 MHz Kabel fr den Horizontal- und Steigbereich
This European Standard was approved by CENELEC on 2003-10-01. 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 obtained on application to the Central Secretariat 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 to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50288-6-1:2003 E
Foreword This European Standard was prepared by SC 46XC, Multicore, Multipair and Quad Data communication cables, of Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50288-6-1 on 2003-10-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement - latest date by which the national standards conflicting with the EN have to be withdrawn This Part 6-1 is to be read in conjunction with EN 50288-1.
(dop) (dow)
2004-10-01 2006-10-01
Contents Page 1 2 3 4 Scope.............................................................................................................................. 4 Normative references .................................................................................................... 4 Definitions...................................................................................................................... 4 Cable construction ........................................................................................................ 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Conductor............................................................................................................... 4 Insulation................................................................................................................ 4 Cabling elements.................................................................................................... 4 Identification of cabling elements............................................................................ 5 Screening of cabling elements................................................................................ 5 Cable make-up ....................................................................................................... 5 Filling compound .................................................................................................... 5 Interstitial fillers....................................................................................................... 5 Screening of the cable core.................................................................................... 5
4.10 Moisture barriers .................................................................................................... 5 4.11 Wrapping layers ..................................................................................................... 5 4.12 Sheath.................................................................................................................... 5 5 Tests and requirements for completed cables............................................................ 6 5.1 5.2 5.3 5.4 Electrical tests ........................................................................................................ 6 Mechanical tests..................................................................................................... 8 Environmental tests ................................................................................................ 9 Fire performance tests ........................................................................................... 9
1 Scope This sectional specification covers unscreened cables, characterised up to 250 MHz, to be used in horizontal floor and building backbone wiring as defined in EN 50173. The electrical, mechanical, transmission and environmental performance characteristics of the unscreened cables, related to their reference test methods, are detailed. This sectional specification is to be read in conjunction with EN 50288-1 which contains the essential provisions for its application. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the cited publications are listed hereafter. For dated references, subsequent amendments to or revisions of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. EN 50173 EN 50288-1 EN 50289 EN 50290 IEC 60189-2 Series Series Information technology - Generic cabling systems Generic specification for multi-element metallic cables used in analogue and digital communication and control Communication cables - Specifications for test methods Communication cables Low-frequency cables and wires with PVC insulation and PVC sheath - Part 2: Cables in pairs, triples, quads and quintuples for inside installations
3 Definitions For the purposes of this European Standard the definitions of EN 50288-1 apply. 4 Cable construction 4.1 Conductor The conductor shall be solid copper and meet the requirements of 4.1 of EN 50288-1. The conductor shall be plain or metal coated. The nominal conductor diameter shall be 0,5 mm and 0,8 mm. 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 cabling elements Unless otherwise specified, the colour coding for identification is given in IEC 60189-2. The colours shall meet the requirements of 4.4 of EN 50288-1. 4.5 Screening of cabling elements Not applicable. 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 4.8 of EN 50288-1. 4.9 Screening of the cable core Not applicable. 4.10 Moisture barriers Not applicable. 4.11 Wrapping layers Where wrapping layers are used they shall be in accordance with 4.11 of EN 50288-1. 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 with this specification. 5.1 Electrical tests 5.1.1 Low-frequency and d.c. electrical measurements
EN 50288-1 Subclause no. 5.1.1.1 5.1.1.2 5.1.1.3 Parameter Requirement
Conductor loop resistance Conductor resistance unbalance Dielectric strength conductor/conductor Insulation resistance Mutual capacitance Capacitance unbalance to earth
19,0 /100 m 2,0% 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 500 M km using 100 V - 500 V test voltage No requirement specified 1 600 pF/km
5.1.2 High-frequency electrical and transmission measurements
EN 50288-1 Subclause no. 5.1.2.1 5.1.2.2 5.1.2.3 Parameter Requirement
Velocity of propagation Propagation delay difference (skew) Longitudinal 2) 3) attenuation
Phase delay 534+36/f ns/100 m, 1 MHz f 250 MHz 40 ns/100 m at 100 MHz
31,25 62,5 10,7 15,5
100 19,9
155 25,3
200 29,1
250 MHz 33,0 dB/100m
1,82 f+0,0169f+0,25/ f, 1 MHz f 250 MHz 5.1.2.5 Near-end crosstalk 1) 2) (NEXT)
1 66,0 4 65,3 10 59,3 16 56,2 20 54,8 31,25 62,5 51,9 47,4 100 44,3 155 41,4 200 39,8 250 MHz 38,3 dB
74,3-15log(f), 1 MHz f 250 MHz (maximum 66 dB)
7 EN 50288-1 Subclause no. 5.1.2.7.1 Parameter Requirement
Power sum near2) end crosstalk (PSNEXT)
31,25 62,5 49,9 45,4
155 39,4
250 MHz 36,3 dB
72,3-15log(f) 1 MHz f 250 MHz (maximum 64 dB) 5.1.2.6 Equal level far-end 2) crosstalk (ELFEXT)
1 66,0 4 58,0 10 50,0 16 45,9 20 44,0 31,25 62,5 40,1 34,1 100 30,0 155 26,2 200 24,0 250 MHz 22,0 dB
70-20log(f), 1 MHz f 250 MHz (maximum 66 dB), values referenced to 100 m 5.1.2.7.2 Power sum equal level far-end 2) crosstalk (PSELFEXT)
1 64,0 4 55,0 10 47,0 16 43,0 20 41,0 31,25 62,5 37,1 31,1 100 27,0 155 23,2 200 21,0 250 MHz 19,0 dB
67-20log(f), 1 MHz f 250 MHz (maximum 64 dB), values referenced to 100 m 5.1.2.8 5.1.2.9 Mean characteristic Impedance Return loss
100 5 , 120 5 , at 100 MHz
31,25 62,5 23,6 21,5
155 18,8
250 MHz 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; f.f.s. 5.1.2.4 Near-end unbalance attenuation Coupling attenuation 40-10log(f) dB, 1 MHz f 250 MHz f.f.s
40 dB, 30 MHz f 100 MHz f.f.s 40-20log(f/100) dB, 100 MHz < f 1 000 MHz
For hybrid and multi-unit cables and 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.
The values in the table are for information only. The formula given shall be used to determine compliance, rounded to one decimal place. Above 20 C the attenuation shall meet values adjusted for temperature. Up to 40 C the temperature coefficient of 0,4 % per degree rise shall be used and for temperatures from 40 C to 60 C the temperature coefficient shall be 0,6 % per degree.
Values between 1 MHz and 4 MHz are for information only.
For the measurement of return loss, a test sample having a round trip loss 40 dB at any measured frequency should be used.
5.2 Mechanical tests
EN 50288-1 Subclause no 5.2.1 5.2.2 5.2.3 Parameter Requirement
Conductor elongation at break EN 50289-3-2 Shrinkage of insulation EN 50289-3-4 Crush resistance of the cable EN 50289-3-5
10 % 5 % for 1 h at 100 C 2 C 1 000 N / 1 min / 100 mm Near-end crosstalk, return loss and characteristic impedance shall remain within the specified limits
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
Abrasion resistance of the sheath markings EN 50289-3-8 Simulated installation testing of the cable Simulated installation testing of the cable Single bend EN 50289-3-9, Clause 4, procedure 2
Markings shall remain legible
Single bend 4 dia / 4 cycles Near-end crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits S bend 8 dia / 100 m / 1 cycle / 120 deg / 1 m/s
Simulated installation testing of the cable S bend EN 50289-3-9, Clause 8
Near-end crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits Load shall be 25 N per pair (i.e.100 N for 4 pairs) Near-end crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits
Tensile performance EN 50289-3-16 combined with 5.2.6 of this standard
5.3 Environmental tests
EN 50288-1 Subclause no 5.3.1 Parameter Requirement
Cold bend performance of the cable EN 50289-3-9
Mandrel diameter 8 OD, no. of turns 4, temp -20 C 2 C No cracks when examined visually without magnification
Temperature cycling EN 50289-4-6
The attenuation shall meet the adjusted values according to note 3 in Table 5.1.2 when subjected to 2 temperature cycles between 20 C and 60 C
5.4 Fire performance tests Fire performance tests shall be in accordance with 5.4 of EN 50288-1.
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