1、 IEC 60728-11Edition 3.0 2010-06INTERNATIONAL STANDARD Cable networks for television signals,sound signals and interactive services Part 11:Safety IEC 60728-11:2010(E)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.N
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10、dition 3.0 2010-06INTERNATIONAL STANDARD Cable networks for television signals,sound signals and interactive services Part 11:Safety INTERNATIONAL ELECTROTECHNICAL COMMISSION XBICS 33.060.40 PRICE CODEISBN 978-2-88910-993-7 Registered trademark of the International Electrotechnical Commission colour
11、insideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 60728-11 IEC:2010(E)CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 T
12、erms,definitions,symbols and abbreviations.9 3.1 Terms and definitions.9 3.2 Symbols.15 3.3 Abbreviations.15 4 Fundamental requirements.16 4.1 General.16 4.2 Mechanical requirements.16 4.3 Accessible parts.16 4.4 Laser radiation.16 5 Protection against environmental influences.16 6 Equipotential bon
13、ding and earthing.17 6.1 General requirements.17 6.2 Equipotential bonding mechanisms.17 6.3 Equipotential bonding in meshed systems.26 6.3.1 References to other standards.26 6.3.2 General on AC mains.26 6.3.3 AC power distribution and connection of the protective conductor.26 6.3.4 Dangers and malf
14、unction.27 6.3.5 Measures.27 7 Mains-supplied equipment.27 8 Remote power feeding in cable networks.28 8.1 Remote power feeding.28 8.1.1 Maximum allowed voltages.28 8.1.2 General requirements for equipment.28 8.1.3 Current-carrying capacity and dielectric strength of the components.28 8.2 Remote pow
15、ering from subscriber premises.29 9 Protection against contact and proximity to electric power distribution systems.29 9.1 General.29 9.2 Overhead lines.29 9.2.1 Overhead lines up to 1 000 V.29 9.2.2 Overhead lines above 1 000 V.30 9.3 House installations up to 1 000 V.30 10 System outlets and trans
16、fer points.30 10.1 General.30 10.2 System outlet.31 10.2.1 Types of system outlets.31 10.2.2 Fully isolated system outlet.31 10.2.3 Semi-isolated system outlet.31 10.2.4 Non-isolated system outlet with protective element.31 10.2.5 Non-isolated system outlet without protective element.31 10.3 Transfer point.32 11 Protection against atmospheric overvoltages and elimination of potential differences.32 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov
