1、BSI Standards PublicationOptical fibre cablesPart 5-20: Family specification Outdoor microduct fibre units, microducts and protected microducts for installation by blowingBS EN 60794-5-20:2014National forewordThis British Standard is the UK implementation of EN 60794-5-20:2014. It isidentical to IEC
2、 60794-5-20:2014.The UK participation in its preparation was entrusted by Technical Com-mittee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport
3、to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 60671 7ICS 33.180.01; 33.180.10Compliance with a British Standard cannot confer immunity fromlegal obl
4、igations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60794-5-20:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60794-5-20 May 2014
5、 ICS 33.180.01; 33.180.10 English Version Optical fibre cables - Part 5-20: Family specification - Outdoor microduct fibre units, microducts and protected microducts for installation by blowing (IEC 60794-5-20:2014) To be completed (CEI 60794-5-20:2014) Lichtwellenleiterkabel - Teil 5-20: Familiensp
6、ezifikation fr Mikrorohr-LWL-Einheiten, Mikrorohre und geschtzte Mikrorohre zur Installation durch Einblasen fr die Anwendung im Freien (IEC 60794-5-20:2014) This European Standard was approved by CENELEC on 2014-03-21. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations wh
7、ich 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. Th
8、is 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. CEN
9、ELEC 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 Netherl
10、ands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Cent
11、re: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60794-5-20:2014 E BS EN 60794-5-20:2014EN 60794-5-20:2014 - 2 - Foreword The text of document 86A/1497/CDV, future edition 1 of IEC 60794-5-2
12、0, prepared by SC 86A “Fibres and cables“ of IEC/TC 86 “Fibre optics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60794-5-20:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical
13、national standard or by endorsement (dop) 2014-12-21 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-03-21 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CE
14、N shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60794-5-20:2014 was approved by CENELEC as a European Standard without any modification. BS EN 60794-5-20:2014- 3 - EN 60794-5-20:2014 Annex ZA (normative) Nor
15、mative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated refere
16、nces, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards l
17、isted in this annex is available here: www.cenelec.eu Publication Year Title EN/HD Year IEC 60304 - Standard colours for insulation for low-frequency cables and wires HD 402 S2 - IEC 60793-1-40 (mod) - Optical fibres - Part 1-40: Measurement methods and test procedures - Attenuation EN 60793-1-40 -
18、IEC 60793-1-53 - Optical fibres - Part 1-53: Measurement methods and test procedures - Water immersion tests EN 60793-1-53 - IEC 60793-2-10 - Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres EN 60793-2-10 - IEC 60793-2-50 - Optical fibres
19、- Part 2-50: Product specifications - Sectional specification for class B single-mode fibres EN 60793-2-50 - IEC 60794-1-1 - Optical fibre cables - Part 1-1: Generic specification - General EN 60794-1-1 - IEC 60794-1-2 - Optical fibre cables - Part 1-2: Generic specification - Cross reference table
20、for optical cable test procedures EN 60794-1-2 - IEC 60794-1-21 - Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods EN 60794-1-21 - IEC 60794-1-22 - Optical fibre cables - Part 1-22: Generic specification - Basic optical cable te
21、st procedures - Environmental test methods EN 60794-1-22 - IEC 60794-3 2001 Optical fibre cables - Part 3: Sectional specification - Outdoor cables EN 60794-3 2002 IEC 60794-5 - Optical fibre cables - Part 5: Sectional specification - Microduct cabling for installation by blowing EN 60794-5 IEC 6079
22、4-5-10 - Optical fibre cables - Part 5-10: Family specification - Outdoor microduct optical fibre cables, microducts and protected microducts for installation by blowing EN 60794-5-10 - BS EN 60794-5-20:2014EN 60794-5-20:2014 - 4 - Publication Year Title EN/HD Year IEC 60811-202 - Electric and optic
23、al fibre cables - Test methods for non-metallic materials - Part 202: General tests - Measurement of thickness of non-metallic sheath EN 60811-202 - IEC 60811-203 - Electric and optical fibre cables - Test methods for non-metallic materials - Part 203: General tests - Measurement of overall dimensio
24、ns EN 60811-203 - IEC 60811-501 - Electric and optical fibre cables - Test methods for non-metallic materials - Part 501: Mechanical tests - Tests for determining the mechanical properties of insulating and sheathing compounds EN 60811-501 - IEC 60811-601 - Electric and optical fibre cables - Test m
25、ethods for non-metallic materials - Part 601: Physical tests - Measurement of the drop point of filling compounds EN 60811-601 - IEC 60811-602 - Electric and optical fibre cables - Test methods for non-metallic materials - Part 602: Physical tests - Separation of oil in filling compounds EN 60811-60
26、2 - IEC 60811-604 - Electric and optical fibre cables - Test methods for non-metallic materials - Part 604: Physical tests - Measurement of absence of corrosive components in filling compounds EN 60811-604 - ISO/IEC 11801 - Information technology - Generic cabling for customer premises EN ISO/IEC 11
27、801 - BS EN 60794-5-20:2014 2 60794-5-20 IEC:2014(E) CONTENTS 1 Scope 6 2 Normative references 6 3 Symbols 7 4 General requirements 8 4.1 Construction . 8 4.1.1 General . 8 4.1.2 Microduct fibre units 9 4.1.3 Microducts . 9 4.1.4 Protected microducts . 9 4.1.5 Microduct fittings . 9 4.1.6 Microduct
28、hardware . 10 4.2 Optical fibres 10 4.3 Installation performance tests . 10 4.3.1 Installation conditions 10 4.3.2 Tests applicable 11 4.3.3 Mechanical and environmental tests 11 5 Microduct fibre unit 11 5.1 Tests applicable 11 5.2 Family requirements and test conditions for microduct fibre unit te
29、sts 12 5.3 Tensile performance . 12 5.4 Crush 12 5.5 Repeated bending . 13 5.6 Torsion . 13 5.7 Kink 13 5.8 Bend . 13 5.9 Temperature cycling . 13 5.10 Ageing 14 5.11 Water immersion . 14 5.12 Buffer removal 14 6 Microduct 14 6.1 Tests applicable 14 6.2 Tensile performance . 15 6.3 Crush 15 6.4 Impa
30、ct 16 6.5 Repeated bending . 16 6.6 Torsion . 16 6.7 Kink 16 6.8 Bend . 16 6.9 Microduct route verification test 17 6.10 Microduct pressure withstand 17 6.11 Ageing 17 7 Protected microducts . 17 7.1 Tests applicable 17 7.2 Tensile performance . 18 7.3 Crush 18 BS EN 60794-5-20:201460794-5-20 IEC:20
31、14(E) 3 7.4 Impact 19 7.5 Repeated bending . 19 7.6 Kink 19 7.7 Bend . 19 7.8 Microduct route verification test 19 7.9 Microduct pressure withstand 20 7.10 Ageing 20 Annex A (informative) Examples of microduct fibre units, microducts, and protected microducts . 21 Annex B (informative) Product descr
32、iptions (blank detail specification and minimum requirements) 22 Annex C (normative) Product constructions . 25 Annex D (normative) Transmission requirements . 28 D.1 Attenuation of cabled fibre 28 D.2 Fibre bandwidth requirements . 29 Annex E (normative) IEC 60794-1-21 Method Exx Microduct inner cl
33、earance test . 30 E.1 Object . 30 E.2 General . 30 E.3 Sample . 30 E.4 Test equipment . 30 E.5 Procedure . 30 E.6 Requirements . 30 E.7 Details to be recorded . 31 Figure A.1 Protected microducts, tight package . 21 Figure A.2 Microduct fibre units . 21 Table 1 Tests applicable for installation perf
34、ormance . 11 Table 2 Tests applicable for mechanical and environmental performance of microduct fibre unit . 11 Table 3 Tests applicable for mechanical and environmental performance of microduct 15 Table 4 Tests applicable for mechanical and environmental performance of protected microduct 18 Table
35、B.1 Microduct fibre unit description 22 Table B.2 Microduct description . 23 Table B.3 Protected microduct description . 24 Table C.1 Typical microduct fibre unit construction 25 Table C.2 Microduct construction . 26 Table C.3 Protected microduct construction . 27 Table D.1 Multimode maximum cable a
36、ttenuation coefficient (dB/km) 28 Table D.2 Single-mode maximum cable attenuation coefficient (dB/km) Premises cabling applications 28 Table D.3 Single-mode maximum cable attenuation coefficient (dB/km) All other applications 29 Table D.4 Minimum multimode fibre bandwidth (MHzkm) . 29 BS EN 60794-5-
37、20:2014 6 60794-5-20 IEC:2014(E) OPTICAL FIBRE CABLES Part 5-20: Family specification Outdoor microduct fibre units, microducts and protected microducts for installation by blowing 1 Scope This part of IEC 60794 is a family specification that covers outdoor microduct fibre units and corresponding mi
38、croducts and protected microducts for installation by blowing. The protected microducts are intended for duct, directly buried or lashed applications. Microduct fibre units differ from microduct optical fibre cables (see IEC 60794-5-10) in that they provide less protection to the fibres that they co
39、ntain. Specifically, microduct fibre units rely on the structure of the microduct, protected microduct or appropriate housing to support installation and to provide additional mechanical protection for the optical fibre over the lifetime of the product. Systems built with components covered by this
40、standard are subject to the requirements of sectional specification IEC 60794-5 where applicable. Annex A gives examples of microduct optical fibre units and microducts. Annex B describes a blank detail specification for outdoor microduct fibre units and the associated microducts and incorporates so
41、me minimum requirements. Detail product specifications may be prepared on the basis of this family specification using Annex B as a guide. Annex C provides normative product constructions for microduct optical fibre units, microducts and protected microducts. The parameters specified in this standar
42、d may be affected by measurement uncertainty arising either from measurement errors or calibration errors due to lack of suitable standards. Acceptance criteria should be interpreted with respect to this consideration. The number of fibres tested is intended to be representative of the microduct fib
43、re unit design and should be agreed between the customer and supplier. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated referen
44、ces, the latest edition of the referenced document (including any amendments) applies. IEC 60304, Standard colours for insulation for low-frequency cables and wires IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation IEC 60793-1-53, Optical fibres Part 1-53:
45、 Measurement methods and test procedures Water immersion IEC 60793-2-10, Optical fibres Part 2-10: Product specifications Sectional specification for category A1 multimode fibres BS EN 60794-5-20:201460794-5-20 IEC:2014(E) 7 IEC 60793-2-50, Optical fibres Part 2-50: Products specification Sectional
46、specification for class B single-mode fibres IEC 60794-1-1, Optical fibre cables Part 1-1: Generic specification General IEC 60794-1-2, Optical fibre cables Part 1-2: Generic specification Basic optical cable test procedures IEC 60794-1-21, Optical fibre cables Part 1-21: Generic specification Basic
47、 optical cable test procedures Mechanical test methods IEC 60794-1-22, Optical fibre cables Part 1-22: Generic specificaiton Basic optical cable test procedures Environmental test methods IEC 60794-3:2001, Optical fibre cables Part 3: Sectional specification Outdoor cables IEC 60794-5, Optical fibre
48、 cables Part 5: Sectional specification Microduct cabling for installation by blowing IEC 60794-5-10, Optical fibre cables Part 5-10: Family specification Outdoor microduct optical fibre cables, microducts and protected microducts for installation by blowing IEC 60811-202, Electric and optical fibre
49、 cables Test methods for non-metallic materials Part 202: General tests Measurement of thickness of non-metallic sheath IEC 60811-203, Electric and optical fibre cables Test methods for non-metallic materials Part 203: General tests Measurement of overall dimensions IEC 60811-501, Electric and optical fibre cables Test methods for non-metallic materials Part 501: Mechanical tests Tests for determining the mechanical properties of ins
