1、 IEC 60794-3-50Edition 1.0 2008-10INTERNATIONAL STANDARD Optical fibre cables Part 3-50:Outdoor cables Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes IEC 60794-3-50:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL
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9、tact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60794-3-50Edition 1.0 2008-10INTERNATIONAL STANDARD Optical fibre cables Part 3-50:Outdoor cables Family specificati
10、on for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes INTERNATIONAL ELECTROTECHNICAL COMMISSION VICS 33.180.10 PRICE CODEISBN 2-8318-1002-5 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALORE
11、FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60794-3-50 IEC:2008(E)CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Symbols and abbreviations.7 4 Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes(
12、blank detail specification and minimum requirements).8 4.1 Construction.8 4.1.1 General.8 4.1.2 Subducts.8 4.1.3 Gas pipe cables.8 4.2 Optical fibres.9 4.2.1 Single-mode dispersion unshifted(B1.1)optical fibre.9 4.2.2 Single-mode dispersion shifted(B2)optical fibre.9 4.2.3 Single-mode non-zero dispe
13、rsion(B4)optical fibre.10 4.2.4 Single-mode(B6)optical fibre.10 4.2.5 Multimode fibres.10 4.3 High pressure gas pipe cable constructions.11 4.3.1 Cable for installation within subducts(previously installed within the high pressure gas pipe).11 4.3.2 Cable for direct installation within the high pres
14、sure gas pipe.12 4.3.3 Subduct construction.13 4.4 Installation and operating conditions.13 4.4.1 Tests applicable to cables/cable elements.13 4.4.2 Installation conditions.13 4.5 Mechanical and environmental tests.14 4.5.1 Subducts.14 4.5.2 Cable for installation within subducts(previously installe
15、d into the gas pipe).16 4.5.3 Cables for direct installation into the high pressure gas pipe.20 Annex A(informative)Blank detail specification.24 Annex B(informative)OF cables for high pressure gas pipes.27 Annex C(informative)Examples of subducts and high pressure gas pipe cables.28 Annex D(informa
16、tive)Example for installation schemes of cables in high pressure gas pipes(fibre-in-gas).30 Figure C.1 Example of constructions of cables for installation in subducts within gas pipes.28 Figure C.2 Example of constructions of cables for direct installation into high pressure gas pipes.29 Figure D.1 Picture of an I/O-port.30 Figure D.2 Schematic drawing of Figure D.1:installation of OF cable within the gas pipe.30 Figure D.3 Schematic drawing of the installation of I/O-ports on high pressure PE g
