1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 0-626-18255-7 SANS 60794-2-10:2006Edition 1 IEC 60794-2-10:2003Edition 1SOUTH AFRICAN NATIONAL STANDARD Optical fibre cables Part 2-10: Indoor cable
4、s Family specification for simplex and duplex cables This national standard is the identical implementation of IEC 60794-2-10:2003 and is adopted with the permission of the International Electrotechnical Commission. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pr
5、etoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 60794-2-10:2006 Edition 1 IEC 60794-2-10:2003 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee Stan
6、SA SC 74A, Communication technology Fibre optics, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD60794-2-10Premire ditionFirst edition2003-01Cbles fibres optiques Partie 2-10:Cbles intrieurs
7、Spcification de famille pourles cbles simplex et duplexOptical fibre cables Part 2-10:Indoor cables Family specification for simplexand duplex cablesPour prix, voir catalogue en vigueurFor price, see current catalogue IEC 2003 Droits de reproduction rservs Copyright - all rights reservedAucune parti
8、e de cette publication ne peut tre reproduite niutilise sous quelque forme que ce soit et par aucun procd,lectronique ou mcanique, y compris la photocopie et lesmicrofilms, sans laccord crit de lditeur.No part of this publication may be reproduced or utilized in anyform or by any means, electronic o
9、r mechanical, includingphotocopying and microfilm, without permission in writing fromthe publisher.International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.chCODE PRI
10、XPRICE CODE M60794-2-10 IEC:2003 3 CONTENTSFOREWORD 51 Scope 92 Normative references. 93 Construction 93.1 General 93.2 Optical fibres and primary coating113.3 Buffer 113.4 Ruggedized fibre .113.5 Slotted core .113.6 Tube113.7 Stranded losse tube.113.8 Ribbon structure 113.9 Strength and anti-buckli
11、ng members133.10 Ripcord133.11 Sheath.133.12 Sheath marking .133.13 Identification133.14 Examples of cable constructions134 Tests 134.1 Dimensions134.2 Mechanical requirements.134.3 Environmental requirements 194.4 Transmission requirements194.5 Fire performance .19Table 1 Dimensions of buffered fib
12、res 11Figure 1 Simplex loose non-buffered fibre cable.21Figure 2 Simplex ruggedized fibre cable.21Figure 3 Duplex loose non-buffered fibre cable 21Figure 4 Duplex ruggedized fibre cable 23Figure 5 Duplex ruggedized fibre zip cord 23Figure 6 Duplex flat cable.23Figure 7 Duplex round cable 2560794-2-1
13、0 IEC:2003 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION_OPTICAL FIBRE CABLES Part 2-10: Indoor cables Family specification for simplex and duplex cablesFOREWORD1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprisingall national electrotechnica
14、l committees (IEC National Committees). The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields. Tothis end and in addition to other activities, the IEC publishes International Standards. Their preparation isen
15、trusted to technical committees; any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work. International, governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation. The IEC collaborates closely with the In
16、ternationalOrganization for Standardization (ISO) in accordance with conditions determined by agreement between thetwo organizations.2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, aninternational consensus of opinion on the relevant subjects sin
17、ce each technical committee has representationfrom all interested National Committees.3) The documents produced have the form of recommendations for international use and are published in the formof standards, technical specifications, technical reports or guides and they are accepted by the Nationa
18、lCommittees in that sense.4) In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the corresponding nation
19、al or regional standard shall be clearlyindicated in the latter.5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its standards.6) Attention is drawn to the possibility that some of the eleme
20、nts of this International Standard may be the subjectof patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 60794-2-10 has been prepared by subcommittee 86A: Fibres andcables, of IEC technical committee 86: Fibre optics.This s
21、tandard shall be used in conjunction with IEC 60794-1-1 and IEC 60794-1-2, andIEC 60794-2.The text of this standard is based on the following documents:FDIS Report on voting86A/816/FDIS 86A/828/RVDFull information on the voting for the approval of this standard can be found in the report onvoting in
22、dicated in the above table.This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.60794-2-10 IEC:2003 7 IEC 60794 consists of the following parts, under the general title Optical fibre cables: Part 1: Generic specification Part 1-1: General Part 1-2: Basic optical cable
23、test procedures Part 2 : Indoor cables Sectional specification Part 3 : Outdoor cables Sectional specification Part 4 : Aerial optical cables for high-voltage power lines Sectional specification1.The committee has decided that the contents of this publication will remain unchanged untilApril 2006. A
24、t this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended._1Under consideration.60794-2-10 IEC:2003 9 OPTICAL FIBRE CABLES Part 2-10: Indoor cables Family specification for simplex and duplex cables1 ScopeThis part of IEC 60794 is a family specification w
25、hich covers simplex and duplex optical fibrecables for indoor use. The requirements of the sectional specification IEC 60794-2 areapplicable to cables covered by this standard.2 Normative referencesThe following referenced documents are indispensable for the application of this document.For dated re
26、ferences, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.They complete the normative references already listed in the generic specification (IEC60794-1-1, Clause 2, and IEC 60794-1-2, Clause 2) or in the section
27、al specification(IEC 60794-2, Clause 2).IEC 60811-1-4:1985, Common test methods for insulating and sheathing materials of electriccables Part 1: Methods for general application Section Four: Tests at low temperaturesISO/IEC 11801:1995, Information technology Generic cabling for customer premises3 Co
28、nstruction3.1 GeneralIn addition to the constructional requirements in IEC 60794-2, the following considerationsapply to simplex and duplex indoor cables.The cable shall be designed and manufactured for an expected operating lifetime of atleast 15 years. In this context, the attenuation of the insta
29、lled cable at the operationalwavelength(s) shall not exceed the values agreed between the customer and themanufacturer. The materials in the cable shall not present a health hazard within itsintended use.There shall be no fibre splice in a delivery length unless otherwise agreed by the customerand t
30、he manufacturer.It shall be possible to identify each individual fibre throughout the length of the cable.60794-2-10 IEC:2003 11 3.2 Optical fibres and primary coatingMultimode or single-mode optical fibres meeting the requirements of IEC 60793-2 shall beused.3.3 BufferIf a tight or semi-tight (loos
31、ely applied) buffer is required, it shall consist of one or more layersof inert material. The buffer shall be easily removable. For tight buffers, the buffer and fibreprimary coating shall be removable in one operation over a length of 15 mm to 25 mm,depending on customer requirements. For tight or
32、semi-tight or loosely applied buffers, thebuffer 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 fibresBuffer typeNominal diametermmTolerancesmmSemi-tight buffer 0,3 1,3 0,1Tight buffer 0,3 1,0 0,13.4 Ruggedized fibreFur
33、ther protection can be provided to tight or semi-tight secondary coated fibres bysurrounding one or two with non-metallic strength members within a sheath of suitablematerial.3.5 Slotted coreNone.3.6 TubeOne or two primary coated or buffered fibres are packaged (loosely or not) in a tubeconstruction
34、 which may be filled. The tube may be reinforced with a composite wall.If required, the suitability of the tube shall be determined by an evaluation of its kinkresistance in accordance with method G7 of IEC 60794-1-2.3.7 Stranded loose tubeNone.3.8 Ribbon structureNone.60794-2-10 IEC:2003 13 3.9 Str
35、ength and anti-buckling membersThe cable shall be designed with sufficient strength members to meet installation and serviceconditions so that the fibres are not subjected to strain in excess of limits agreed between thecustomer and the manufacturer .The strength and/or anti-buckling member may be e
36、ither metallic or non-metallic and may belocated in the cable core and/or under the sheath and/or in the sheath.3.10 RipcordNone.3.11 SheathThe cable shall have an overall protective sheath. The cable diameter shall be specified in therelevant detail specification (or product specification).3.12 She
37、ath markingIf required, the cable shall be marked as agreed between customer and manufacturer.3.13 IdentificationNone.3.14 Examples of cable constructionsExamples of some main types of cable construction are shown in Figures 1 to 7. Otherconfigurations are not excluded if they meet the mechanical, e
38、nvironmental and transmissionrequirements given in this specification.4 TestsCompliance with relevant detail specification requirements shall be verified by carrying outtests selected from the following subclauses. It is not intended that all the tests shall becarried out; the frequency of testing s
39、hall be agreed between the customer and themanufacturer.Unless otherwise specified, all tests shall be carried out at ambient temperature.4.1 DimensionsThe fibre dimensions and tolerances shall be checked in accordance with test method C ofIEC 60793-1-20 or IEC 60793-1-21. The diameter of the buffer
40、 and of the cable, as well as thethickness of the sheath, shall be measured in accordance with the methods of IEC 60189-1.4.2 Mechanical requirementsSome of the following tests can be performed on a short sample length of cable which is stillan integral part of a longer length. Thus, it becomes poss
41、ible to detect permanent changes inattenuation. The wavelength and maximum increase in attenuation change shall be agreedupon between the customer and the manufacturer .60794-2-10 IEC:2003 15 4.2.1 Cable tensile performanceMethod: IEC 60794-1-2-E1ADiameter of chuck drums and transfer devices: not lo
42、wer than the minimum dynamic bendingdiameter specified for the cableVelocity of transfer device: either 100 mm/min or 100 N/minLoad: 100 N applied for 5 min for simplex cables,200 N for 5 min for duplex cablesLength of sample: sufficient to achieve the desired accuracy of measure-ment of attenuation
43、 change and shall be agreed uponbetween the customer and the manufacturerRequirements: no change in attenuation after the test, andthere shall be no damage to the cable elements4.2.2 Cable crushMethod: IEC 60794-1-2-E3Force: 500 NDuration: 1 minLength between test locations: 500 mmRequirements: no c
44、hange in attenuation after the test, andthere shall be no damage to the cable elementsNOTE In the case of flat cables the force is applied on the flat sides of the cable.4.2.3 Cable impactMethod: IEC 60794-1-2-E4Radius of striking surface: 12,5 mmImpact energy: 1,0 JNumber of impacts: at least 3, ea
45、ch separated at least 500 mmRequirements: under visual examination without magnification thereshall be no damage to the sheath and to the cableelements. The imprint of the striking surface on thesheath is not considered mechanical damageNOTE In the case of flat cables the force is applied on the fla
46、t sides of the cable.4.2.4 Cable bendingMethod: IEC 60794-1-2-E11AMandrel diameter: 50 mmNumber of turns per helix: 6Number of cycles: 10Requirements: no fibre breakageNOTE In the case of flat cables the force is applied on the flat sides of the cable.60794-2-10 IEC:2003 17 4.2.5 Cable repeated bend
47、ingMethod: IEC 60794-1-2-E6Bending radius: 5 times cable diameter (for flat cables, the diameter isthe minor dimension)Number of cycles: 300Mass of weights: 2 kgRequirements: under visual examination without magnification thereshall be no damage to the sheath and to the cableelementsNOTE In the case
48、 of flat cables the sample is fixed to the apparatus so that bending is perpendicular to the flatsurface of the cable.4.2.6 Cable bending under tensionNone.4.2.7 Cable bending at low temperatureMethod: IEC 60794-1-2-E11A (see IEC 60811-1-4, Clause 8)Bending radius: 10 times cable diameter (for flat
49、cables, the diameter isthe minor dimension)Number of cycles: 2Test temperature: 0 C, 10 C or 15C depending on application andcustomer requirementsNumber of turns per helix: according to Clause 8 of IEC 60811-1-4Requirements: in addition to the requirement of Clause 8 ofIEC 60811-1-4, no fibre shall break during the test4.2.8 Cable flexingMethod: IEC 60794-1-2-E8Number of cycles: 300Pulley diameter: 100 mmMass of weights: 2 kgRequirements: no f
