1、 IEC 60794-3-20Edition 2.0 2009-01INTERNATIONAL STANDARD Optical fibre cables Part 3-20:Outdoor cables Family specification for self-supporting aerial telecommunication cables IEC 60794-3-20:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUP
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9、Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60794-3-20Edition 2.0 2009-01INTERNATIONAL STANDARD Optical fibre cables Part 3-20:Outdoor cables Family specification for self-supporting aerial telecommunicatio
10、n cables INTERNATIONAL ELECTROTECHNICAL COMMISSION SICS 33.180.10 PRICE CODEISBN 2-8318-1022-5 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60794-3-20 IEC:2009(
11、E)CONTENTS FOREWORD.4H3 1 Scope.5H5 2 Normative references.6H5 3 Symbols.7H6 4 Optical fibre,cable construction and tests applicable for aerial telecommunication cables to be used in self-supporting aerial applications.8H7 4.1 Optical fibres.9H7 4.1.1 Common single-mode fibre requirements.10H7 4.1.2
12、 Single-mode dispersion unshifted(B1.1)optical fibre.11H7 4.1.3 Single-mode dispersion unshifted(B1.2)optical fibre.12H8 4.1.4 Single-mode dispersion unshifted(B1.3)optical fibre.13H8 4.1.5 Single-mode dispersion shifted(B2)optical fibre.14H8 4.1.6 Single-mode non-zero dispersion(B4)optical fibre.15
13、H8 4.1.7 Single-mode non-zero dispersion shifted(B5)optical fibre.16H9 4.1.8 Single-mode(B6.a)optical fibre.17H9 4.2 Cable element.18H9 4.3 Installation and operating conditions.19H10 4.3.1 Tests applicable.20H10 4.3.2 Installation conditions.21H10 4.4 Mechanical and environmental tests.22H10 4.4.1
14、Tests applicable.23H10 4.4.2 Details on family requirements and test conditions for optical fibre cable tests.24H11 Annex A(normative)Family specification for self-supporting aerial telecommunication cables.25H17 Table 1 Common single-mode fibre requirements.26H7 Table 2 Single-mode dispersion unshi
15、fted(B1.1)optical fibre.27H7 Table 3 Single-mode dispersion unshifted(B1.2)optical fibre.28H8 Table 4 Single-mode dispersion unshifted(B1.3)optical fibre.29H8 Table 5 Single-mode dispersion shifted(B2)optical fibre.30H8 Table 6 Single-mode non-zero dispersion(B4)optical fibre.31H8 Table 7 Single-mod
16、e non-zero dispersion shifted(B5)optical fibre.32H9 Table 8 Single-mode(B6.a)optical fibre.33H9 Table 9 Cable element.34H9 Table 10 Tests applicable.35H10 Table 11 Mechanical and environmental applicable tests.36H10 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60794-3-20 IEC:2009(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRE CABLES Part 3-20:Outdoor cables Family specification for self-supporting aerial telecommu