1、 INTERNATIONAL STANDARD IEC60092-503 Second edition2007-06 Electrical installations in ships Part 503:Special features AC supply systems with voltages in the range of above 1 kV up to and including 15 kV Reference number IEC 60092-503:2007(E)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC
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4、Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of
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8、nd edition2007-06 Electrical installations in ships Part 503:Special features AC supply systems with voltages in the range of above 1 kV up to and including 15 kV R For price,see current cataloguePRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission 2 60092-5
9、03 IEC:2007(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.8 3.1 AC voltages.8 3.2 Earthed neutral systems.9 3.3 Insulation.9 4 General requirements.9 4.1 Voltage and frequency.9 4.2 Warning notices.10 4.3 Access.10 4.4 Insulation level.10 4.5 Clearan
10、ces and creepage distances.10 4.5.1 Clearance distance.10 4.5.2 Creepage distance.10 4.6 Earthing.11 4.7 Distribution systems.12 4.7.1 Divided system.12 4.7.2 Auxiliary circuits.12 4.7.3 Busbars of main switchboards.12 4.7.4 Generator circuits.13 4.7.5 Outgoing circuits.13 4.7.6 Power-transformer ci
11、rcuits.13 4.7.7 Shore-connection circuits and circuits to other units.13 4.7.8 Control and instrumentation circuits.13 4.8 Generator and transformer neutrals.13 4.8.1 Generator neutrals interconnected.13 4.8.2 Disconnection.14 4.9 Electrical protection.14 4.9.1 General.14 4.9.2 Generator protection.
12、14 4.9.3 Motor protection.14 4.9.4 Power-transformer protection.14 4.9.5 Voltage-transformer protection.14 4.9.6 Overvoltage protection.14 4.9.7 Earth-fault monitoring.14 5 Equipment.15 5.1 AC generators and motors.15 5.1.1 Enclosures.15 5.1.2 Performance.15 5.1.3 De-excitation.16 5.1.4 Mechanical c
13、haracteristics.16 5.2 Transformers.16 5.2.1 Enclosures and installations.16 60092-503 IEC:2007(E)3 5.2.2 Accumulation of moisture and condensation.16 5.2.3 Transient voltage conditions.17 5.2.4 Current inrush.17 5.3 Switchgear and controlgear assemblies(switchboards).17 5.3.1 Design and construction
14、.17 5.3.2 Passageways.18 5.4 Switchgear and controlgear and fuses.18 5.5 Cables.18 5.5.1 General.18 5.5.2 Installation.18 5.5.3 Conductors and terminations.18 5.5.4 Current rating.19 5.5.5 Testing.19 5.5.6 Socket-outlets.19 Table 1 AC three-phase systems having a nominal voltage above 1 kV and up to
15、 and including 15 kV.9 Table 2 Minimum clearance for equipment.10 Table 3 Minimum creepage distances for main switchboards and generators.11 Table 4 Minimum creepage distances for other equipment.11 4 60092-503 IEC:2007(E)INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSTALLATIONS IN SHIPS
16、Part 503:Special features AC supply systems with voltages in the range of above 1 kV up to and including 15 kV 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-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,IEC publishe
