SIST EN 50173-1:2018

SLOVENSKI STANDARD
SIST EN 50173-1:2018
01-oktober-2018
1DGRPHãþD
SIST EN 50173-1:2011
Informacijska tehnologija - Univerzalni sistemi polaganja kablov - 1. del: Splošne
zahteve
Information technology - Generic cabling systems - Part 1: General requirements
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 1:
Allgemeine Anforderungen
Technologies de l'information - Systèmes de câblage générique - Partie 1: Exigences
générales
Ta slovenski standard je istoveten z: EN 50173-1:2018
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
SIST EN 50173-1:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50173-1:2018

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SIST EN 50173-1:2018

EUROPEAN STANDARD EN 50173-1

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2018
ICS 33.040.50 Supersedes EN 50173-1:2011
English Version
Information technology - Generic cabling systems - Part 1:
General requirements
Technologies de l'information - Systèmes de câblage Informationstechnik - Anwendungsneutrale
générique - Partie 1: Exigences générales Kommunikationskabelanlagen - Teil 1: Allgemeine
Anforderungen
This European Standard was approved by CENELEC on 2018-03-19. 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 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 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50173-1:2018 E

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SIST EN 50173-1:2018
EN 50173-1:2018 (E)
Contents Page
European foreword . 12
Introduction . 13
1 Scope and conformance . 15
1.1 Scope . 15
1.2 Conformance . 15
2 Normative references . 16
3 Terms, definitions and abbreviations . 22
3.1 Terms and definitions . 22
3.2 Abbreviations . 31
3.3 Symbols . 33
4 Structure of generic backbone cabling . 33
4.1 General . 33
4.2 Functional elements . 34
4.3 Structure and hierarchy . 34
4.4 Cabling subsystems . 36
4.5 Design objectives . 36
4.6 Accommodation of functional elements . 37
4.7 Interfaces . 37
4.8 Dimensioning and configuring . 38
5 Channel performance . 39
5.1 Environmental performance . 39
5.2 Transmission performance . 41
6 Reference implementations for backbone cabling . 75
6.1 General . 75
6.2 Balanced cabling . 75
6.3 Coaxial cabling . 78
6.4 Optical fibre cabling . 78
7 Cable requirements . 78
7.1 General . 78
7.2 Operating environment . 79
7.3 Balanced cables of Categories 5, 6, 6A, 7, 7A, BCT-B, 8.1 and 8.2 . 79
7.4 Coaxial cables . 81
7.5 Optical fibre cables . 81
8 Connecting hardware requirements . 83
8.1 General requirements . 83
8.2 Category 5, 6, 6A, 7, 7A, BCT-B, 8.1 and 8.2 and connecting hardware for balanced cabling . 88
8.3 Category BCT-C connecting hardware for coaxial cabling . 94
8.4 Optical fibre connecting hardware. 96
9 Requirements for cords and jumpers . 99
9.1 General . 99
9.2 Operating environment . 99
9.3 Category 5, 6, 6A, 7, 7A, BCT-B, 8.1 and 8.2 cords for balanced cabling . 99
9.4 Coaxial cords . 105
9.5 Optical fibre cords . 105
Annex A (normative) Link performance limits. 107
A.1 General . 107

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EN 50173-1:2018 (E)
A.2 Balanced cabling . 107
A.2.1 General . 107
A.2.2 Return loss . 108
A.2.3 Insertion loss . 109
A.2.4 Near-end crosstalk loss . 110
A.2.5 Attenuation to crosstalk loss ratio at the near-end . 113
A.2.6 Attenuation to crosstalk loss ratio at the far-end . 113
A.2.7 Direct current loop resistance . 116
A.2.8 Direct current resistance unbalance. 116
A.2.9 Propagation delay . 117
A.2.10 Delay skew . 118
A.2.11 Transverse conversion loss . 119
A.2.12 Equal level transverse conversion transfer loss (ELTCTL) . 119
A.2.13 Coupling attenuation . 119
A.2.14 Alien near-end crosstalk . 120
A.2.15 Alien attenuation to crosstalk ratio at the far end . 120
A.3 Coaxial cabling . 120
A.3.1 Return loss . 120
A.3.2 Insertion loss . 120
A.3.3 Direct current loop resistance . 120
A.3.4 Direct current carrying capacity . 121
A.3.5 Operating voltage . 121
A.3.6 Screening attenuation . 121
A.4 Optical fibre cabling . 121
Annex B (informative) Permanent link performance limits for maximum implementations (balanced
and coaxial cabling) . 122
B.1 Balanced cabling . 122
B.1.1 General . 122
B.1.2 Performance limits. 122
B.2 Coaxial cabling . 128
B.2.1 General . 128
B.2.2 Insertion loss . 128
B.2.3 Direct current loop resistance . 128
Annex C (informative) Information on all-silica optical fibres in the previous edition . 129
C.1 Cabled singlemode optical fibres of Category OS1 . 129
C.2 Cabled multimode optical fibres of Category OM1 and OM2 . 129
C.2.1 Cable specification . 129
C.2.2 Application support . 129
Annex D (normative) Electrical, mechanical and environmental requirements of balanced
connecting hardware . 132
D.1 General . 132
D.2 Electrical performance of Category 5, 6, 6A, 7, 7A, BCT-B, 8.1 and 8.2 connecting hardware . 132
D.2.1 Return loss . 132
D.2.2 Insertion loss . 133
D.2.3 Near-end crosstalk loss . 134
D.2.4 Power sum near-end crosstalk loss . 135
D.2.5 Far-end crosstalk loss . 136
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EN 50173-1:2018 (E)
D.2.6 Power sum far-end crosstalk loss . 137
D.2.7 Input to output resistance . 138
D.2.8 Input to output resistance unbalance . 138
D.2.9 Current carrying capacity . 139
D.2.10 Propagation delay . 139
D.2.11 Delay skew . 140
D.2.12 Unbalance attenuation . 140
D.2.13 Transfer impedance . 142
D.2.14 Coupling attenuation . 143
D.2.15 Dielectric performance . 144
D.2.16 Power sum alien near-end crosstalk loss . 145
D.2.17 Power sum alien far-end crosstalk loss . 146
D.3 Mechanical and environmental performance . 147
D.3.1 General . 147
D.3.2 Solderless connections . 147
D.3.3 Free and fixed connectors (modular plugs and jacks) . 148
D.3.4 Other connecting hardware . 149
Annex E (informative) Electromagnetic characteristics of balanced cabling . 151
Annex F (informative) Supported applications . 152
F.1 Supported applications for balanced cabling . 152
F.2 Supported applications for coaxial cabling . 156
F.3 Supported applications for optical fibre cabling . 157
F.3.1 Generic applications . 157
F.3.2 Data centre (computer room space) applications . 160
F.3.3 Industrial space applications . 162
Annex G (informative) Introduction to environmental classification . 163
G.1 General . 163
G.2 The application of environmental classification . 163
G.2.1 MICE . 163
G.2.2 The channel environment . 163
Figure G.1 — Variation of the environment along a cabling channel . 163
Figure G.2 — The local environment . 164
G.2.3 Component selection . 164
G.3 The MICE system . 164
G.4 Guidance with respect to environmental classification . 170
G.4.1 Mechanical environment . 170
G.4.2 Ingress protection environment . 170
G.4.3 Climatic and chemical environment . 170
G.4.4 Electromagnetic environment . 170
Annex H (informative) Acronyms for balanced cables . 172
Annex I (normative) Testing procedures to assess conformance with EN 50173 standards . 174
I.1 General . 174
I.2 Channel and link performance testing. 174
I.2.1 General . 174
I.2.2 Testing balanced cabling channels and links . 175
I.2.3 Testing optical fibre cabling channels and links . 175
I.2.4 Channel and link test schedules . 175

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EN 50173-1:2018 (E)
Bibliography . 178

Figures
Figure 1 — Schematic relationship between the EN 50173 series and other relevant standards . 13
Figure 2 — Structure of generic cabling . 34
Figure 3 — Hierarchical structure of generic cabling . 35
Figure 4 — Interconnect and cross-connect models . 35
Figure 5 — Examples of backbone cabling implementations to improve reliability . 37
Figure 6 — Test and equipment interfaces for backbone cabling . 38
Figure 7 — Backbone cabling model . 76
Figure 8 — Pin grouping and pair assignments for EN 60603-7 series connecting hardware of Categories 5, 6,
6A and 8.1 (front view of fixed connector) . 92
Figure 9 — Pin grouping and pair assignments for EN 60603-7 series connecting hardware of Categories 7,
7A, BCT-B and 8.2 (front view of fixed connector) . 92
Figure 10 — Pin grouping and pair assignments for EN 61076-3-104 connecting hardware (front view of
fixed connector) . 93
Figure 11 — Four position jack pin and pair grouping assignments for EN 61076-2-101 connecting hardware
(front view of connector) . 93
Figure 12 — Four position jack pin and pair grouping assignments for EN 61076-2-109 connecting hardware
(front view of fixed connector) . 94
Figure 13 — Conductor assignment of EN 61169-2 (Type 9,52) and EN 61169-24 (Type F) . 96
Figure 14 — Optical fibre assignments for connecting hardware for two optical fibres . 98
Figure 15 — Optical fibre assignments for connecting hardware for 12 and 24 optical fibres (front view of
fixed or free connector) . 99
Figure A.1 — Link options . 107
Figure G.1 — Variation of the environment along a cabling channel . 163
Figure G.2 — The local environment . 164
Figure G.3 — Noise Ranges of Common Industrial Machine Devices . 171
Figure H.1 — Balanced cable naming schema . 172
Figure H.2 — Balanced cable construction types . 173

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EN 50173-1:2018 (E)
Tables
Table 1 — Contextual relationship between EN 50173 series and other standards relevant for information
technology cabling systems. 14
Table 2 — Channel environments . 39
Table 3 — Details of Environmental Classification . 40
Table 4 — Formulae for RL limits for a channel . 43
Table 5 — RL limits for a channel at key frequencies . 44
Table 6 — Formulae for IL limits for a channel . 45
Table 7 — IL limits for a channel at key frequencies . 46
Table 8 — Formulae for NEXT limits for a channel . 47
Table 9 — NEXT limits for a channel at key frequencies . 48
Table 10 — Formulae for PSNEXT limits for a channel . 49
Table 11 — PSNEXT limits for a channel at key frequencies . 50
Table 12 — ACR-N limits for a channel at key frequencies .
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