1、 IEC 60794-2-40Edition 2.0 2008-03INTERNATIONAL STANDARD Optical fibre cables Part 2-40:Indoor optical fibre cables Family specification for A4 fibre cables IEC 60794-2-40:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUB
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9、0 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60794-2-40Edition 2.0 2008-03INTERNATIONAL STANDARD Optical fibre cables Part 2-40:Indoor optical fibre cables Family specification for A4 fibre cables INTERNATIONAL ELECTROTECHNICA
10、L COMMISSION HICS 33.180.10 PRICE CODEISBN 2-8318-9666-5 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60794-2-40 IEC:2008(E)CONTENTS FOREWORD.3 1 Scope.5 2 Normative references.5 3 Construction.5 3.1 General.5 3.2 Optical fibres.6
11、 3.3 Buffer.6 3.4 Tube.6 3.5 Strength and anti-buckling members.6 3.6 Ripcord.6 3.7 Ribbon.6 3.8 Sheath.6 3.9 Marking.6 3.10 Identification.6 3.11 Examples of construction.6 4 Dimensions.6 5 Tests.6 5.1 Dimensions.7 5.2 Mechanical requirements.7 5.3 Environmental requirements.7 5.4 Transmission requ
12、irements.7 5.5 Fire performance.7 Bibliography.9 Table 1 Mechanical tests.7 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60794-2-40 IEC:2008(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRE CABLES Part 2-40:Indoor optic
13、al fibre cables Family specification for A4 fibre 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-operatio
14、n 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 Publica
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16、borates 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 accept
