SIST EN 60794-2-20:2010
(Main)Optical fibre cables - Part 2-20: Indoor optical fibre cables - Family specification for multi-fibre optical distribution cables (IEC 60794-2-20:2008)
Optical fibre cables - Part 2-20: Indoor optical fibre cables - Family specification for multi-fibre optical distribution cables (IEC 60794-2-20:2008)
This part of IEC 60794 is a family specification covering multi-fibre optical distribution cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this standard. Annex B contains requirements that supersede the normal requirements in case the cables are intended to be used in installation governed by the MICE table of ISO/IEC 24702 (i.e. Industrial premises).
Lichtwellenleiterkabel - Teil 2-20: LWL-Innenkabel - Familienspezifikation für Mehrfaserverteilerkabel (IEC 60794-2-20:2008)
Câbles à fibres optiques - Partie 2-20: Câbles intérieurs - Spécification de famille pour les câbles optiques multifibres de distribution (CEI 60794-2-20:2008)
Optični kabli - 2-20. del: Optični kabli za notranjo uporabo - Skupinska specifikacija za večvlakenske optične distribucijske kanale (IEC 60794-2-20:2008)
Ta del IEC 60794 je skupinska specifikacija, ki zajema večvlakenske optične distribucijske kanale za notranjo uporabo. Zahteve presečnih specifikacij IEC 60794-2 veljajo za kable, ki jih zajema ta standard. Dodatek B vsebuje zahteve, ki nadomestijo običajne zahteve v primeru, da so kabli namenjeni za uporabo v napravi, ki jo ureja MICE tabela ISO/IEC 24702 (tj. Industrijski objekti).
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.XSLQVNDLichtwellenleiterkabel - Teil 2-20: LWL-Innenkabel - Familienspezifikation für Mehrfaserverteilerkabel (IEC 60794-2-20:2008)Câbles à fibres optiques - Partie 2-20: Câbles intérieurs - Spécification de famille pour les câbles optiques multifibres de distribution (CEI 60794-2-20:2008)Optical fibre cables - Part 2-20: Indoor optical fibre cables - Family specification for multi-fibre optical distribution cables (IEC 60794-2-20:2008)33.180.10Fibres and cablesICS:Ta slovenski standard je istoveten z:EN 60794-2-20:2010SIST EN 60794-2-20:2010en01-marec-2010SIST EN 60794-2-20:2010SLOVENSKI
STANDARDSIST EN 60794-2-20:20041DGRPHãþD
SIST EN 60794-2-20:2010
EUROPEAN STANDARD EN 60794-2-20 NORME EUROPÉENNE
EUROPÄISCHE NORM January 2010
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: 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 60794-2-20:2010 E
ICS 33.180.01 Supersedes EN 60794-2-20:2003
English version
Optical fibre cables -
Part 2-20: Indoor cables -
Family specification for multi-fibre optical distribution cables (IEC 60794-2-20:2008)
Câbles à fibres optiques -
Partie 2-20: Câbles intérieurs -
Spécification de famille pour les câbles optiques multifibres de distribution (CEI 60794-2-20:2008)
Lichtwellenleiterkabel -
Teil 2-20: LWL-Innenkabel -
Familienspezifikation
für Mehrfaserverteilerkabel (IEC 60794-2-20:2008)
This European Standard was approved by CENELEC on 2009-12-01. 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, 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.
SIST EN 60794-2-20:2010
EN 60794-2-20:2010 - 2 -
Foreword The text of document 86A/1187/CDV, future edition 2 of IEC 60794-2-20, prepared by SC 86A, Fibres and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60794-2-20 on 2009-12-01 This European Standard supersedes EN 60794-2-20:2003. The main changes are listed below: – cable crush to be measured both during and after load; – cable torsion test length parameter correlated to cable outer diameter; – cable description and construction blank detail specification annexes; – MICE environment blank detail specification is addressed in Annex B. This standard is to be used in conjunction with EN 60794-1-1, EN 60794-1-2 and EN 60794-2. 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)
2010-09-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2012-12-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60794-2-20:2008 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60654 NOTE
Harmonized in EN 60654 series (not modified). IEC 60721-1 NOTE
Harmonized as EN 60721-1 (not modified). IEC 60721-3-3 + A2 NOTE
Harmonized as EN 60721-3-3 + A2 (not modified). IEC 60794-1-2 NOTE
Harmonized as EN 60794-1-2 (not modified). IEC 61000-6-2 NOTE
Harmonized as EN 61000-6-2 (not modified). IEC 61326 NOTE
Harmonized as EN 61326 (not modified). IEC 61918 NOTE
Harmonized as EN 61918 (modified). __________ SIST EN 60794-2-20:2010
- 3 - EN 60794-2-30:2010 Annex ZA (normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60189-1 - Low-frequency cables and wires with PVC insulation and PVC sheath -
Part 1: General test and measuring methods - -
IEC 60304 - Standard colours for insulation for low-frequency cables and wires HD 402 S2 -
IEC 60793-2-10 - Optical fibres -
Part 2-10: Product specifications - Sectional specification for category A1 multimode fibresEN 60793-2-10 -
IEC 60793-2-50 - Optical fibres -
Part 2-50: Product specifications - Sectional specification for class B single-mode fibres EN 60793-2-50 -
IEC 60794-2 - Optical fibre cables -
Part 2: Indoor cables - Sectional specification EN 60794-2 -
IEC 60811-1-4 - Insulating and sheathing materials of electric and optical cables - Common test methods - Part 1-4: General application - Tests at low temperature EN 60811-1-4
-
IEC/TR 62222 - Fire performance of communication cables installed in buildings - -
SIST EN 60794-2-20:2010
SIST EN 60794-2-20:2010
IEC 60794-2-20Edition 2.0 2008-11INTERNATIONAL STANDARD
Optical fibre cables –
Part 2-20: Indoor cables – Family specification for multi-fibre optical distribution cables
INTERNATIONAL ELECTROTECHNICAL COMMISSION TICS 33.180.01 PRICE CODEISBN 2-8318-1015-7
® Registered trademark of the International Electrotechnical Commission
SIST EN 60794-2-20:2010
– 2 – 60794-2-20 © IEC:2008(E) CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Construction.6 3.1 General.6 3.2 Optical fibres and primary coating.7 3.3 Buffer.7 3.4 Ruggedised fibre.7 3.5 Slotted core.7 3.6 Tube.7 3.7 Stranded tube.7 3.8 Ribbon structure.8 3.9 Strength and anti-buckling members.8 3.10 Ripcord.8 3.11 Sheath.8 3.12 Sheath marking.8 3.13 Identification.8 3.14 Examples of cable constructions.8 4 Tests.8 4.1 Dimensions.8 4.2 Mechanical requirements.9 4.2.1 Cable tensile performance.9 4.2.2 Cable crush.9 4.2.3 Cable impact.9 4.2.4 Cable bending.10 4.2.5 Cable repeated bending.10 4.2.6 Cable bending under tension.10 4.2.7 Cable bending at low temperature.10 4.2.8 Cable flexing.10 4.2.9 Cable torsion.10 4.2.10 Cable kink.11 4.3 Environmental requirements – Temperature cycling.11 4.4 Transmission requirements.11 4.5 Fire performance.11 Annex A (informative)
Examples of cable constructions.13 Annex B (informative)
Family specification for multi-fibre optical distribution cables – Blank detail specification and minimum requirements.18 Bibliography.24
Figure A.1 – Example of cross-section of a 12 fibre distribution cable.13 Figure A.2 – Example of cross-section of a 36 fibre distribution cable.13 Figure A.3 – Example of cross-section of a 6 fibre break-out cable.14 Figure A.4 – Example of cross-section of a 24 fibre break-out cable.14 Figure A.5 – Example of cross-section of a slotted core type indoor cable
with 4 fibre ribbons.15 SIST EN 60794-2-20:2010
60794-2-20 © IEC:2008(E) – 3 – Figure A.6 – Example of cross-section of an SZ (reverse oscillating lay) slotted core type indoor cable with 2 fibre ribbons.15 Figure A.7 – Example of cross-section of an SZ (reverse oscillating lay) slotted core type indoor cable with 4 fibre bundles.16 Figure A.8 – Example of multi-fibre unitube cable.16 Figure A.9 – Example of multi-fibre cable.17
Table 1 – Dimensions of buffered fibres.7 Table 2 – Sample temperature cycling values.11 Table B.1 – Cable description.18 Table B.2 – Cable element.19 Table B.3 – Cable construction.20 Table B.4 – Installation and operating conditions.20 Table B.5 – Tests applicable.21 Table B.6 – Specifications for industrial premises installations as defined in
ISO/IEC 24702.22
SIST EN 60794-2-20:2010
– 4 – 60794-2-20 © IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION ___________
OPTICAL FIBRE CABLES –
Part 2-20: Indoor cables –
Family specification for multi-fibre optical distribution cables
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60794-2-20 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee 86: Fibre optics. This second edition cancels and replaces the first edition published in 2003. It constitutes a technical revision. The main changes from the previous edition include: – cable crush to be measured both during and after load; – cable torsion test length parameter correlated to cable outer diameter; – cable description and construction blank detail specification annexes; – MICE environment blank detail specification is addressed in Annex B. This standard is to be used in conjunction with IEC 60794-1-1 and IEC 60794-1-2, and IEC 60794-2. SIST EN 60794-2-20:2010
60794-2-20 © IEC:2008(E) – 5 – The text of this standard is based on the following documents: CDV Report on voting 86A/1187/CDV 86A/1221/RVC
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 60794 series, published under the general title Optical fibre cables, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended. A bilingual version of this publication may be issued at a later date.
SIST EN 60794-2-20:2010
– 6 – 60794-2-20 © IEC:2008(E) OPTICAL FIBRE CABLES –
Part 2-20: Indoor cables –
Family specification for multi-fibre optical distribution cables
1 Scope This part of IEC 60794 is a family specification covering multi-fibre optical distribution cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this standard.
Annex B contains requirements that supersede the normal requirements in case the cables are intended to be used in installation governed by the MICE table of ISO/IEC 24702 (i.e. Industrial premises). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. They complete the normative references already listed in the generic specification (IEC 60794-1-1, Clause 2, and IEC 60794-1-2, Clause 2). IEC 60189-1, Low-frequency cables and wires with PVC insulation and PVC sheath – Part 1: General test and measuring methods IEC 60304, Standard colours for insulation for low-frequency cables and wires IEC 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for category A1 multimode fibres IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for class B single-mode fibres IEC 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification IEC 60811-1-4, Common test methods for insulating and sheathing materials of electric cables – Part 1: Methods for general application – Section four: Tests at low temperature
IEC 62222, Fire performance of communication cables installed in buildings 3 Construction 3.1 General In addition to the constructional requirements in IEC 60794-2, the following considerations apply to multi-fibre indoor cables. The cable shall be designed and manufactured for an expected operating lifetime of at least 15 years. In this context, the attenuation at the operational wavelength(s) of the optical fibres contained in the installed cable shall not exceed values agreed between customer and SIST EN 60794-2-20:2010
60794-2-20 © IEC:2008(E) – 7 – supplier. The materials in the cable shall not present a health or environmental hazard within its intended use. There shall be no fibre splice in a delivery length unless otherwise agreed by customer and supplier. It shall be possible to identify each individual fibre throughout the length of the cable. 3.2 Optical fibres and primary coating A1 multimode fibres which meet the requirements of IEC 60793-2-10 or B1.1, B1.3, B6_a, and B6_b single-mode optical fibres which meet the requirements of IEC 60793-2-50 shall be used. The linear coefficient of optical fibre attenuation and attenuation point discontinuity may be affected by the cable manufacturing process. Maximum values for these optical characteristics shall be agreed between customer and supplier.
3.3 Buffer If a tight or semi-tight (loosely applied) buffer is required, it shall consist of one or more layers of inert material. The buffer shall be easily removable. For tight buffers, the buffer and fibre primary coating shall be removable in one operation over a length of 15 mm to 25 mm, depending on customer requirements. For semi-tight buffers, the buffer shall be easily removable over a length of 0,3 m to 2,0 m. Buffer dimensions are shown in Table 1. Table 1 – Dimensions of buffered fibres Buffer type Nominal diameter mm Tolerances mm Semi-tight buffer 0,3 - 1,3 ±0,05 Tight buffer 0,3 - 1,0 ±0,05
3.4 Ruggedised fibre Further protection can be provided to tight or semi-tight secondary coated fibres by surrounding them with non-metallic strength members within a sheath of suitable material. 3.
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