kSIST FprEN IEC 60794-2-20:2024

Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical cables

IEC 60794-2-20:2024 is part of a family specification covering multi-fibre optical cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this document. Annex B contains a blank detail specification and general guidance in case the cables are intended to be used in installations governed by the MICE table of ISO/IEC 11801-1. This fourth edition cancels and replaces the third edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) update of the normative references;
b) review update of parameters and requirements for mechanical tests and environmental tests, maintaining alignment with additional relevant standards in the IEC 60794-2 series;
c) addition of cabled fibre attenuation requirements;
d) addition of cable design examples.
This document is to be used in conjunction with IEC 60794-1-1:2023, IEC 60794-1-2:2021, IEC 60794‑1‑21:2015 and IEC 60794‑1‑21:2015/AMD:2020, IEC 60794-1-22:2017, IEC 60794‑1-23:2019 and IEC 60794‑2:2017.

Lichtwellenleiterkabel - Teil 2-20: LWL-Innenkabel - Familienspezifikation für Mehrfaser-Lichtwellenleiterkabel

Câbles à fibres optiques - Partie 2-20: Câbles intérieurs - Spécification de famille pour les câbles optiques multifibres

IEC 60794-2-20:2024 fait partie une spécification de famille qui couvre les câbles optiques multifibres pour utilisation intérieure. Les exigences de la spécification intermédiaire IEC 60794-2 sont applicables aux câbles couverts par le présent document. L’Annexe B contient une spécification particulière-cadre et des recommandations générales dans le cas où les câbles sont destinés à être utilisés dans des installations régies par la matrice MICE de l’ISO/IEC 11801-1.
Cette quatrième édition annule et remplace la troisième édition parue en 2013. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) mise à jour des références normatives;
b) révision-mise à jour des paramètres et des exigences pour les essais mécaniques et les essais d’environnement, en conservant l’alignement avec les normes pertinentes supplémentaires de la série IEC 60794-2;
c) ajout des exigences relatives à l’affaiblissement des fibres câblées;
d) ajout d’exemples de conceptions de câble.
Le présent document est à utiliser conjointement avec l’IEC 60794-1-1:2023, l’IEC 60794‑1‑2:2021, l’IEC 60794-1-21:2015 associée à l’IEC 60794-1-21:2015/AMD:2020, l’IEC 60794-1-22:2017, l’IEC 60794-1-23:2019 et l’IEC 60794-2:2017.

Optični kabli - 2-20. del: Notranji kabli - Skupinska specifikacija za distribucijske kable z več optičnimi vlakni

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Jun-2023
• ICS: 33.180.01 - Fibre optic systems in general
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 14-Feb-2024
• Due Date: 03-Apr-2024
• Completion Date: 23-Feb-2024
• Ref Project: FprEN IEC 60794-2-20:2024 - Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical cables

Relations

• Revises: SIST EN 60794-2-20:2014 - Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical cables
• Effective Date: 26-Apr-2022

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60794-2-20:2023
01-junij-2023
Optični kabli - 2-20. del: Notranji kabli - Skupinska specifikacija za distribucijske
kable z več optičnimi vlakni
Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical
cables
Lichtwellenleiterkabel - Teil 2-20: LWL-Innenkabel - Familienspezifikation für Mehrfaser-
Lichtwellenleiterkabel
Câbles à fibres optiques - Partie 2-20: Câbles intérieurs - Spécification de famille pour
les câbles optiques multifibres
Ta slovenski standard je istoveten z: prEN IEC 60794-2-20:2023
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
oSIST prEN IEC 60794-2-20:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60794-2-20:2023

oSIST prEN IEC 60794-2-20:2023
86A/2310/CDV
COMMITTEE DRAFT FOR VOTE (CDV)

PROJECT NUMBER:
IEC 60794-2-20 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-04-07 2023-06-30
SUPERSEDES DOCUMENTS:
86A/2234/CD, 86A/2308/CC
IEC SC 86A : FIBRES AND CABLES
SECRETARIAT: SECRETARY:
France Mr Laurent Gasca
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are
reminded that the enquiry stage is the final stage for submitting "in some countries" clauses. See
AC/22/2007.
TITLE:
Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical
cables
PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for
any other purpose without permission in writing from IEC.

oSIST prEN IEC 60794-2-20:2023
IEC CDV 60794-2-20/Ed4 © IEC:2023 – 2 – 86A/2310/CDV
1 CONTENTS
2 CONTENTS . 2
3 FOREWORD . 4
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms and definitions . 7
7 4 Construction . 7
8 4.1 General . 7
9 4.2 Optical fibres . 8
10 4.3 Buffer . 8
11 4.4 Ruggedized fibre . 8
12 4.5 Slotted core . 8
13 4.6 Tube . 8
14 4.7 Stranded tube . 8
15 4.8 Ribbon structure . 8
16 4.9 Strength and anti-buckling members. 9
17 4.10 Ripcord . 9
18 4.11 Sheath . 9
19 4.12 Sheath marking . 9
20 4.13 Identification . 9
21 4.14 Examples of cable constructions . 9
22 5 Tests . 9
23 5.1 General . 9
24 5.2 Dimensions . 10
25 The fibre dimensions and tolerances shall be checked in accordance with the test
26 method as specified in IEC 60793-1-20 or IEC 60793-1-21. The diameter of
27 the buffer and of the cable, as well as the thickness of the sheath, shall be
28 measured in accordance with the methods of IEC 60811 201 and IEC 60811-
29 203. . 10
30 5.3 Mechanical requirements . 10
31 5.3.1 Tensile performance . 10
32 5.3.2 Crush . 10
33 5.3.3 Impact . 10
34 5.3.4 Bending . 11
35 5.3.5 Repeated bending . 11
36 5.3.6 Bending under tension . 11
37 5.3.7 Bending at low temperature . 11
38 5.3.8 Flexing . 11
39 5.3.9 Torsion . 11
40 5.3.10 Cable kink . 12
41 5.4 Environmental requirements . 12
42 5.4.1 Temperature cycling . 12
43 3.5 13
44 5.5 Transmission requirements. 13
45 5.5.1 General . 13
46 5.5.2 Single-mode optical fibres . 13
47 5.5.3 Single-mode dispersion unshifted (B-652.B) optical fibre . 13
48 5.5.4 Single-mode dispersion unshifted (B-652.D) optical fibre . 13

oSIST prEN IEC 60794-2-20:2023
IEC CDV 60794-2-20/Ed4 © IEC:2023 – 3 – 86A/2310/CDV
49 5.5.5 Single-mode (B-657.A) optical fibre . 14
50 5.5.6 Single-mode (B-657.B) optical fibre . 14
51 5.5.7 Multimode optical fibres . 14
52 5.5.8 Multimode (A1-OM1 to A1-OM5) optical fibres . 14
53 5.6 Fire performance . 15
Annex A (informative) Examples of cable constructions . 16
55 Annex B (informative) Family specification for multi-fibre optical cables – Blank detail
56 specification and minimum requirements . 21
57 B.1 Blank detail specification . 21
58 B.1.1 Cable description . 21
59 B.1.2 Cable element . 22
60 B.1.3 Cable construction . 22
61 B.1.4 Installation and operating conditions . 24
62 Mechanical and environmental tests . 24
B.1.5
63 B.2 Cables subject to the MICE environmental classification (ISO/IEC 11801-1
64 and related standards) . 25
65 Bibliography . 26
67 Figure A.1 – Example of cross-section of a 12 fibre cable . 16
Figure A.2 – Example of cross-section of a 36 fibre cable . 16
69 Figure A.3 – Example of cross-section of a 6 fibre break-out cable . 17
Figure A.4 – Example of cross-section of a 24 fibre break-out cable . 17
71 Figure A.5 – Example of cross-section of a slotted core type indoor cable with 4 fibre
72 ribbons . 18
73 Figure A.6 – Example of cross-section of an SZ (reverse oscillating lay) slotted core
74 type indoor cable with 2 fibre ribbons . 18
75 Figure A.7 – Example of cross-section of an SZ (reverse oscillating lay) slotted core
type indoor cable with 4 fibre bundles . 19
77 19
Figure A.8 – Example of multi-fibre unitube cable . 19
79 Figure A.9 – Example of multi-fibre cable . 20
Figure A.10 – Example of a retractable (micro-module) cable . 20
81 Table 1 – Dimensions of buffered fibres . 8
Table 2 – Sample values for temperature cycling . 12
83 Table 3 – Common single-mode optical fibre requirements . 13
Table 4 – Cabled fibre attenuation requirements for B-652.B optical fibre . 13
85 Table 5 – Cabled fibre attenuation requirements for B-652.D optical fibre . 14
Table 6 – Cabled fibre attenuation requirements for B-657.A optical fibre . 14
87 Table 7 – Cabled fibre attenuation requirements for B-657.B optical fibre . 14
Table 8 – Common multimode optical fibre requirements . 14
89 Table 9 – Cabled fibre attenuation requirements for A1-OM1 to A1-OM5 optical fibres . 15
Table B.1 – Cable description (1 of 2) . 21
91 Table B.2 – Cable element . 22
Table B.3 – Cable construction . 22
93 Table B.4 – Installation and operating conditions . 24
Table B.5 – Tests applicable . 24

oSIST prEN IEC 60794-2-20:2023
IEC CDV 60794-2-20/Ed4 © IEC:2023 – 4 – 86A/2310/CDV
96 INTERNATIONAL ELECTROTECHNICAL COMMISSION
97 ____________
99 OPTICAL FIBRE CABLES –
101 Part 2-20: Indoor cables –
102 Family specification for multi-fibre optical cables
104 FOREWORD
105 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
106 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
107 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
108 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
109 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
...