SIST EN 50173-5:2008/A1:2011

SLOVENSKI STANDARD
SIST EN 50173-5:2008/A1:2011
01-september-2011
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Information technology - Generic cabling systems - Part 5: Data centres
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 5:
Rechenzentren
Technologies de l'information - Systèmes de câblage générique - Partie 5: Centres de
données
Ta slovenski standard je istoveten z: EN 50173-5:2007/A1:2010
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
SIST EN 50173-5:2008/A1:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50173-5:2008/A1:2011

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SIST EN 50173-5:2008/A1:2011

EUROPEAN STANDARD
EN 50173-5/A1

NORME EUROPÉENNE
December 2010
EUROPÄISCHE NORM

ICS 33.040.50


English version


Information technology -
Generic cabling systems -
Part 5: Data centres



Technologies de l'information -  Informationstechnik -
Systèmes de câblage générique - Anwendungsneutrale
Partie 5: Centres de données Kommunikationskabelanlagen -
Teil 5: Rechenzentren





This amendment A1 modifies the European Standard EN 50173-5:2007; it was approved by CENELEC on
2010-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment 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 amendment 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, Bulgaria, Croatia,
Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50173-5:2007/A1:2010 E

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SIST EN 50173-5:2008/A1:2011
EN 50173-5:2007/A1:2010 – 2 –
Foreword
This amendment was prepared by the Technical Committee CENELEC TC 215, Electrotechnical aspects of
telecommunication equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as amendment A1 to
EN 50173-5:2007 on 2010-12-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.
The following dates were fixed:
– latest date by which the amendment has to be implemented

at national level by publication of an identical

national standard or by endorsement
(dop) 2011-12-01

– latest date by which the national standards conflicting

with the amendment have to be withdrawn
(dow) 2013-12-01
This standard introduces several changes in order to align the standard with the changes resulting from the
introduction of new Channel classes and component Categories in EN 50173-1:201X. Furthermore it
introduces a new normative annex on the use of high density optical fibre connecting hardware.
For the convenience of the reader of this standard, the pertinent tables are reproduced in total, with grey
shading of new table cells. Where modifications to text apply to single expressions or a few words only, this
is indicated by underlining.

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SIST EN 50173-5:2008/A1:2011
- 3 - EN 50173-5:2007/A1:2010
Text of A1 to EN 50173-5:2007
General change
Replace all occurrences of “EN 50173-1:2007” with “EN 50173-1:201X” (in addition to the changes
indicated below).
Introduction
Replace Figure 1 with:
In addition, a number of Technical Reports have been developed to support or extend the application of
these standards, including
- CLC/TR 50173-99-1, Cabling guidelines in support of 10 GBASE-T,
- CLC/TR 50173-99-2, Information technology – Implementation of BCT applications using cabling in
accordance with EN 50173-4.

EENN 50098-50098-1:1: C Cuussttoommerer p prreemmiisseess EENN 501 50173-73-2:2: I Innffoormrmaattiioonn t teecchnolhnologogyy::
ccablabliinng fg foorr i innffoormrmatatiion ton teecchhnonollogyogy - - GGenereneriicc c cablabliing -ng - OOffffiiccee prpreemmiisseess
IISSDDNN b baassiicc a acceccessss
EENN 5017 50173-3-3:3: I Innffoorrmmatatiion ton teecchhnnoollogyogy::
EENN 50 50098-098-2:2: C Cuussttoommeerr pr preemmiisseses GGeenerneriicc c cablabliinng -g - IIndusndusttrriiaall pr prememiisseess
EENN 50173 50173--11:: IInnffoorrmmatatiion ton teecchhnnoollogyogy::
ccablabliing ng ffoorr i innffoorrmmatatiion ton teecchhnolnologyogy - -
EENN 50173- 50173-4:4: I Innffoorrmmatatiion ton teecchnolhnologyogy:: GGeenerneriicc c cablabliinngg - - GGeenerneralal r requiequirreemmententss
2048 2048 kkbbiitt//ss IISSDDNN p prriimmararyy a acccceessss and and
GGeneenerriicc c cablabliing ng -- HHomomeses
lleeasased led liine nne neettwwoorrkk i inntteerrffacacee
EENN 5 50173-0173-5:5: I Innffoorrmmatatiion ton teecchnolhnologogyy::
GGenereneriicc c cablabliing -ng - DDaatta ca cententrreess
EENN 5017 50174-4-11:: I Innffoorrmmatatiion ton teecchhnnoollooggyy – – EENN 50310 50310:: A Applppliiccatatiion ofon of e equiquipotpotententiiaall
CCablabliing ing innssttalalllaattiion –on – IInsnsttaallllaattiioonn bbondionding and eng and eaarrtthhiingng iinn b buuiillddiingsngs w wiitthh
ssppececiiffiiccatatiion anon and qd qualualiittyy as asssuurrancancee iinnffoorrmmatatiion ton teecchhnolnologogyy equiequipmpmentent
EENN 501 50174-74-2:2: I Innffoormrmaattiioonn t teecchnolhnologogyy - -
CCablabliing ing innssttalalllaattiionon - - IInnssttaallllaattiion on
plplananniningng and pr and pracacttiicceess i innssiide bde buuiilldidinnggss
EENN 501 50174-74-3:3: I Innffoormrmaattiioonn t teecchnolhnologogyy - -
CCablabliing ing innssttalalllaattiionon - - IInnssttaallllaattiion on
plplananniningng and pr and pracacttiicceess out outssiide bde buuiillddiingsngs
EENN 50 50346:346: I Innffoorrmmatatiion ton teecchhnolnologogyy --
CCaabblliing ing innssttalalllaattiionon - -
TTeessttiing ng ofof i innssttalallled ced cablabliinngg

Figure 1 – Schematic relationship between the EN 50173 series and other relevant standards

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SIST EN 50173-5:2008/A1:2011
EN 50173-5:2007/A1:2010 – 4 –
Replace Table 1 with:
Table 1 – Contextual relationship between EN 50173 series and other relevant standards
Building design Generic cabling Specification phase Installation phase Operation phase
phase design phase
EN 50310 EN 50173 series EN 50174-1 EN 50174-1
except
EN 50173-4
6: Bonding networks 4: Structure 4: Requirements for 4: Requirements for
specifying installations specifying installations
5: Channel
of information of information
performance
technology cabling technology cabling
7: Cable requirements
5: Requirements for
installers of infor-
8: Connecting
mation technology
hardware
cabling
requirements
9: Requirements for
cords and jumpers
A: Link performance
limits
 Planning phase
and
EN 50173-4 EN 50174-2 EN 50174-2
4 and 5: Structure 4: Requirements for 5: Requirements for
planning installations the installation of
6: Channel
of information information
performance
technology cabling technology cabling
8: Cable requirements
6: Segregation of 6: Segregation of
metallic information metallic information
9: Connecting
technology cabling technology cabling
hardware
and power supply and power supply
requirements
cabling cabling
10: Requirements for
7: Electricity 8: Office (commercial)
cords and jumpers
distribution systems premises
A: Link performance and lightning
9: Industrial premises
limits protection
10: Homes

11: Data centres
 and and
EN 50174-3 EN 50174-3
 and and
(for equipotential (for equipotential
bonding) bonding)
EN 50310 EN 50310
  and
EN 50346
  4: General
requirements
5: Test parameters for
balanced cabling
6: Test parameters for
optical fibre cabling

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SIST EN 50173-5:2008/A1:2011
- 5 - EN 50173-5:2007/A1:2010
1.2 Conformance
In the English version, replace bullet c), second sub-bullet, with:
attachment of appropriate components to a link design meeting the prescribed performance Class of
Annex A. Channel performance shall be ensured where a channel is created by adding more than one cord
to either end of a link meeting the requirements of Annex A;
In all versions, replace text starting from “In addition the following requirements” up to and including bullet g)
by:
In addition the requirements of the EN 50174 series of standards shall be met.
The test parameters to be measured and the sampling levels to be applied for a particular installation shall
be defined in the installation specification and quality plans for that installation prepared in accordance with
EN 50174-1.
The treatment of measured results that fail to meet the requirements of this clause, or lie within the relevant
measurement accuracy, shall be clearly documented within a quality plan as described in EN 50174-1.
Delete the sentence “Neither this standard nor EN 50174-1 specify the test and sampling levels to be
adopted”.
Delete the last paragraph, which starts with “Specifications marked “ffs” (for further study) …”.
2 Normative references
Update the reference to EN 50173-1:2007 to read “EN 50173-1:201X”.
Update the title of EN 50174-1 to read “Information technology – Cabling installation – Part 1: Installation
specification and quality assurance”
Replace the reference to EN 61754-7 with:
EN 61754-7, Fibre optic connector interfaces - Part 7: Type MPO connector family (IEC 61754-7)
Add the following references:
EN 61754-20:201X, Fibre optic interconnecting devices and passive components – Fibre optic connector
interfaces – Part 20: Type LC connector family (IEC 61754-20:201X)
Delete references to EN 50377-7-1, EN 50377-7-2, EN 50377-7-3 and EN 50377-7-4.
4.6.2 Channels and links
st
Delete in the 1 paragraph “between specific test interfaces”.

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SIST EN 50173-5:2008/A1:2011
EN 50173-5:2007/A1:2010 – 6 –
5.3.2 Balanced cabling
st
Replace 1 paragraph with:
The main distribution and zone distribution cabling shall be designed to provide a channel performance as
required from Class E or higher as specified in EN 50173-1:201X, taking into consideration the
A
requirements for application support over the lifetime of the cabling.
Delete the NOTE.
5.3.3 Optical fibre cabling
Replace existing text with:
Cabling shall be designed using the cabled optical fibre Categories referenced in Clause 7 to provide
channel performance as required from Classes OF-100, OF-300, OF-500, OF-2000, OF-5000 and OF-10000
as specified in EN 50173-1:201X.
Where multimode optical fibre is used, the main distribution and zone distribution cabling shall be designed
to provide a minimum of Class OF-300 channel performance using cabled optical fibres of 7.3.1.1.
6.2.2.1 Component choice
nd
Replace 2 paragraph with:
Using the models of 6.2.2.2:
a) Category 6 components provide Class E balanced cabling performance;
A A
b) Category 7 components provide Class F balanced cabling performance;
c) Category 7 components provide Class F balanced cabling performance.
A A
6.2.2.2 Dimensions
rd
Insert the following NOTE after the 3 indent (which starts “when an LDP is used…”):
NOTE  Channel and permanent link performance requirements are based on assumptions regarding the minimum length and insertion
loss of cords.

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SIST EN 50173-5:2008/A1:2011
- 7 - EN 50173-5:2007/A1:2010
Replace Table 2 with:
Table 2 – Zone distribution channel length equations
Model Figure Implementation equations
Class E Class F Class F
A A
a a a
Interconnect – EO
Z =107 – 3 – F×X Z =107 – 2 – F×X Z =107 – 2 – F×X
10a
a a a
Cross-connect – EO 10b
Z =106 – 3 – F×X Z =106 – 3 – F×X Z =106 – 3 – F×X
a a a
Interconnect – LDP –EO 10c Z =106 – 3 – F×X – L×Y Z =106 – 3 – F×X – L×Y Z =106 – 3 – F×X – L×Y
a a a
Cross-connect – LDP – EO 10d Z =105 – 3 – F×X – L×Y Z =105 – 3 – F×X – L×Y Z =105 – 3 – F×X – L×Y
Z maximum length of the zone distribution cable (m)
F combined length of patch cords, jumpers and equipment cords (m)
L length of the LDP cable (m)
X ratio of flexible cable insertion loss (dB/m) to zone distribution cable insertion loss (dB/m) – see Clause 9
Y ratio of LDP cable insertion loss (dB/m) to zone distribution cable insertion loss (dB/m) – see Clause 9
a
 This length reduction is to provide an allocated margin to accommodate insertion loss deviation.
For operating temperatures above 20 °C, Z should be reduced by 0,2 % per °C for screened cables and 0,4 % per °C (20 °C to
40 °C) and 0,6 % per °C (> 40 °C to 60 °C) for unscreened cables. Manufacturers’/suppliers’ information shall be consulted where
the intended operating temperature exceeds 60 °C.

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SIST EN 50173-5:2008/A1:2011
EN 50173-5:2007/A1:2010 – 8 –
Replace Figure 10 with:
Channel = 100 m max.
Zone distribution
cable
ZD
EO
EQP C C C C EQP
Equipment Equipment
cord cord

a) Interconnect – EO model
Channel = 100 m max.
Zone distribution
cable
ZD
EO
EQP C C C C C EQP
Equipment Patch cord/ Equipment
cord Jumper cord

b) Cross-connect – EO model
Channel = 100 m max.
Zone distribution
cable
ZD
EO
EQP C C C C C EQP
LDP
Equipment LDP cable Equipment
cord cord

c) Interconnect – LDP –EO model
Channel = 100 m max.
Zone distribution
cable
ZD
EO
EQP C C C C C C EQP
LDP
Equipment Patch cord/ Equipment
LDP cable
cord Jumper cord

d) Cross-connect – LDP – EO model
Figure 10 – Zone distribution cabling models

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SIST EN 50173-5:2008/A1:2011
- 9 - EN 50173-5:2007/A1:2010
6.2.3.1 Component choice
nd
Replace 2 paragraph with:
Using the models of 6.2.3.2:
a) Category 6 components provide Class E balanced cabling performance;
A A
b) Category 7 components provide Class F balanced cabling performance;
c) Category 7 components provide Class F balanced cabling performance.
A A
6.2.3.2 Dimensions
Replace Figure 11 with:
Channel
Main distribution cable
MD ZD
EQP C C C C C C EQP
Equipment Patch cord/ Equipment
Patch cord/
cord Jumper cord
Jumper

Figure 11 – Main distribution cabling model
Insert at the end of the list starting with “The following general restrictions apply” the following indent and note:
- when four connections are used in a channel, the physical length of the main distribution cable should be at
least 15 m.
NOTE  Channel and permanent link performance requirements are based on assumptions regarding the minimum length and insertion
loss of cords.
Replace Table 3 with:
Table 3 – Main distribution channel length equations
Model Implementation equations
Class E Class F Class F
A A
a a a
M =107 – 3 – F×X M =107 – 2 – F×X M =107 – 2 – F×X
Interconnect – interconnect
a a a
M =106 – 3 – F×X M =106 – 3 – F×X M =106 – 3 – F×X
Interconnect – cross-connect
a a a
M =105 – 3 – F×X M =105 – 3 – F×X M =105 – 3 – F×X
Cross-connect – cross-connect
M maximum length of the main distribution cable (m)
F combined length of patch cords, jumpers and equipment cords (m)
X ratio of flexible cable insertion loss (dB/m) to main distribution cable insertion loss (dB/m) – see Clause 9
a
 This length reduction is to provide an allocated margin to accommodate insertion loss deviation.
For operating temperatures above 20 °C, M should be reduced by 0,2 % per °C for screened cables and 0,4 % per °C
...