BRITISH STANDARD
Multi-element metallic cables used in analogue and digital communication and control — Part 6-1: Sectional specification for unscreened cables characterised up to 250 250 MHz MHz — Hori Horizo zont ntal al and and bui build ldin ing g backbone cables
The European Standard EN 50288-6-1:2003 has the status of a Britis British h Standar Standard d
ICS 33.120.10
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BS EN 50288-6-1:2003
BS EN 50288-6-1:2003
National foreword This British Standard is the official English language version of EN 50288-6-1:2003. The UK participation in its preparation was entrusted by T echnical 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 obta ined 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
Summary of pages This document comprises a front cover, an in side front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.
Amendments issued since publication Amd. No. © BSI 2 February 2004
ISBN 0 580 43345 5
Date
Comments
EN 50288-6-1
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
December 2003
ICS 33.120.10
English version
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
Câbles métalliques à éléments multiples utilisés pour les transmissions et les commandes analogiques et numériques Partie 6-1: Spécification intermédiaire pour les câbles non blindés pour applications jusqu'à 250 MHz Câbles horizontaux et verticaux de bâtiment
Mehradrige metallische Datenund Kontrollkabel für analoge und digitale Übertragung Teil 6-1: Rahmenspezifikation für ungeschirmte Kabel bis 250 MHz Kabel für 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.
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 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
EN 50288-6-1:2003
–2– 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
(dop)
2004-10-01
- latest date by which the national standards conflicting with the EN have to be withdrawn
(dow)
2006-10-01
This Part 6-1 is to be read in conjunction with EN 50288-1. _____________
–3–
EN 50288-6-1:2003
Contents
Page 1
Scope.............................................................................................................................. 4
2
Normative references .................................................................................................... 4
3
Definitions...................................................................................................................... 4
4
Cable construction ........................................................................................................ 4
4.1
Conductor............................................................................................................... 4
4.2
Insulation................................................................................................................ 4
4.3
Cabling elements.................................................................................................... 4
4.4
Identification of cabling elements............................................................................5
4.5
Screening 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.................................................................................................................... 5 5
Tests and requirements for completed cables............................................................ 6
5.1
Electrical tests ........................................................................................................6
5.2
Mechanical tests..................................................................................................... 8
5.3
Environmental tests................................................................................................ 9
5.4
Fire performance tests ........................................................................................... 9
EN 50288-6-1:2003
–4–
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
Information technology - Generic cabling systems
EN 50288-1
Generic specification for multi-element metallic cables used in analogue and digital communication and control
EN 50289
Series
Communication cables - Specifications for test methods
EN 50290
Series
Communication cables
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 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.
–5–
EN 50288-6-1:2003
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.
EN 50288-6-1:2003
–6–
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.
Parameter
Requirement
5.1.1.1
Conductor loop resistance
≤ 19,0 Ω/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
≥ 500 MΩ km using 100 V - 500 V test voltage
5.1.1.5
Mutual capacitance
No requirement specified
5.1.1.6
Capacitance unbalance to earth
≤ 1 600 pF/km
5.1.2 High-frequency electrical and transmission measurements EN 50288-1 Subclause no.
Parameter
Requirement
5.1.2.1
Velocity of propagation
Phase delay ≤ 534+36/√f ns/100 m, 1 MHz ≤ f ≤ 250 MHz
5.1.2.2
Propagation delay difference (skew)
≤ 40 ns/100 m at 100 MHz
5.1.2.3
Longitudinal attenuation 2) 3)
4)
1
4
10
16
20
31,25 62,5
2, 1
3 ,8
6, 0
7 ,6
8, 5
1 0, 7 15 ,5 19 ,9 25, 3 2 9, 1 3 3, 0 dB /10 0m
α ≤ 1,82√ f+0,0169f+0,25/√ f,
5.1.2.5
Near-end crosstalk (NEXT) 1) 2)
1
4
10
16
20
100
155
200
250 MHz
1 MHz ≤ f ≤ 250 MHz
3 1, 25 6 2, 5
1 00
1 55
2 00
2 50 MHz
66,0 65,3 59,3 56,2 54,8 51,9 47,4 44,3 41,4 39,8 38,3 dB
≥ 74,3-15log(f), 1 MHz ≤ f ≤ 250 MHz (maximum 66 dB)
–7– EN 50288-1 Subclause no.
EN 50288-6-1:2003
Parameter
5.1.2.7.1
Power sum nearend crosstalk 2) (PSNEXT)
Requirement
1
4
10
16
20
31,25 62,5
100
155
200
250 MHz
64,0 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 (maximum 64 dB)
5.1.2.6
Equal level far-end crosstalk 2) (ELFEXT)
1
4
10
16
20
31,25 62,5
100
155
200
250 MHz
66,0 58,0 50,0 45,9 44,0 40,1 34,1 30,0 26,2 24,0 22,0 dB
1 MHz ≤ f ≤ 250 MHz (maximum 66 dB), values referenced to 100 m ≥ 70-20log(f),
5.1.2.7.2
Power sum equal level far-end crosstalk 2) (PSELFEXT)
1
4
10
16
20
31,25 62,5
100
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 5.1.2.8
Mean characteristic Impedance
5.1.2.9
Return loss 5)
100 Ω ± 5 Ω, 120 Ω ± 5 Ω, at 100 MHz 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; 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
≥ 40-10log(f) dB, 1 MHz ≤ f ≤ 250 MHz
5.1.2.10
Coupling attenuation
≥ 40 dB, 30 MHz ≤ f ≤ 100 MHz f.f.s ≥ 40-20log(f/100) dB, 100 MHz < f ≤ 1 000 MHz
f.f.s
f.f.s
1)
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. 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)
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. û
û
û
4) 5)
û
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.
EN 50288-6-1:2003
–8–
5.2 Mechanical tests EN 50288-1 Subclause no
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 % for 1 h at 100 °C ± 2 °C
5.2.3
Crush resistance of the cable EN 50289-3-5
1 000 N / 1 min / 100 mm Near-end crosstalk, return 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
Abrasion resistance of the sheath markings EN 50289-3-8
5.2.6
Simulated installation testing of the cable
5.2.6.1
Simulated installation testing of the cable
Markings shall remain legible
Single bend 4 × dia / 4 cycles
Single bend EN 50289-3-9, Clause 4, procedure 2 5.2.6.2
Simulated installation testing of the cable
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
“S” bend
5.2.7
EN 50289-3-9, Clause 8
Near-end crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits
Tensile performance
Load shall be 25 N per pair (i.e.100 N for 4 pairs)
EN 50289-3-16 combined with 5.2.6 of this standard
Near-end crosstalk, return loss, characteristic impedance and coupling attenuation (u/c) shall remain within the specified limits
–9–
EN 50288-6-1:2003
5.3 Environmental tests EN 50288-1 Subclause no
5.3.1
Parameter
Cold bend performance of the cable EN 50289-3-9
Requirement
Mandrel diameter 8 × OD, no. of turns 4, temp -20 C ± 2 C û
û
No cracks when examined visually without magnification 5.3.2
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 û
û
5.4 Fire performance tests
Fire performance tests shall be in accordance with 5.4 of EN 50288-1 .
BS EN 50288-6-1:2003
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