1、 IEC 61892-3 Edition 3.0 2012-03 INTERNATIONAL STANDARD Mobile and fixed offshore units Electrical installations Part 3:Equipment IEC 61892-3:2012(E)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publicatio
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8、 wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.IEC 61892-3 Edition 3.0 2012-03 INTERNATIONAL STANDARD Mobile and fixed offshore units Electrical installations Part 3:Equipment INTERNATIONAL ELECTROTECHNICAL COMMISSIO
9、N XA ICS 47.020.60 PRICE CODE ISBN 978-2-88912-991-1 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.2 61892-3 IEC:2012(E)CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Normative references.9 3
10、Terms and definitions.12 4 General requirements.15 4.1 Environmental conditions.15 4.1.1 General.15 4.1.2 Ambient air temperature.15 4.1.3 Temperature rise.15 4.1.4 Vibration.15 4.2 Degree of protection.16 4.3 Nameplates and labels.16 4.4 Voltage and frequency variations.16 4.5 Electromagnetic compa
11、tibility.17 4.6 Terminations.17 5 Generators and motors.17 5.1 General.17 5.2 Voltage regulation of generators.17 5.2.1 General.17 5.2.2 DC generators.18 5.2.3 AC generators.18 5.3 Generators for special purposes.19 5.3.1 DC generators.19 5.3.2 AC generators.19 5.4 Parallel operation of general serv
12、ice generators AC generators.19 5.4.1 Reactive load sharing.19 5.4.2 Load sharing.19 5.4.3 Flywheel effect for a.c.generators.19 5.4.4 Excitation of a.c.generators.20 5.5 Mechanical features(generators and motors).20 5.5.1 Entry of water.20 5.5.2 Accumulation of moisture and condensation.20 5.5.3 Ba
13、lance.20 5.5.4 Shaft currents.20 5.5.5 Terminals.21 5.6 Lubrication(generators and motors).21 5.7 Prime movers.21 5.7.1 General.21 5.7.2 Speed governing characteristics.21 5.7.3 Flywheel effect.22 5.8 Cyclic irregularity.22 5.9 Lubrication(prime movers).22 5.10 Running speed.23 5.11 Testing.23 61892
14、-3 IEC:2012(E)3 6 Transformers for power and lighting.23 6.1 General.23 6.2 Winding arrangement.24 6.3 Terminals.24 6.4 Cooling arrangement.24 6.5 Voltage regulation.24 6.6 Tests.24 7 Switchgear and controlgear assemblies.25 7.1 Service conditions.25 7.2 Definitions.25 7.3 Locking facilities.25 7.4
15、Low-voltage switchgear and controlgear assemblies.25 7.4.1 General.25 7.4.2 Temperature rise.25 7.4.3 Circuits.25 7.4.4 Marking of parts.26 7.4.5 Design and construction.26 7.4.6 Barriers between generator sections.28 7.4.7 Internal electrical circuits and connections.28 7.4.8 Design verification.29
16、 7.5 Switchgear and controlgear in the range above 1 kV up to and including 35 kV.30 7.5.1 General.30 7.5.2 Service conditions.30 7.5.3 Ratings.30 7.5.4 Design and construction.30 7.5.5 Degree of protection provided by enclosures.30 7.5.6 Circuit breakers,switches and fuses.30 7.5.7 Earthing and short-circuiting.31 7.5.8 Protection against live parts.31 7.5.9 Internal wiring.31 7.5.10 Auxiliary systems.31 7.6 Instruments for assemblies.31 7.6.1 General.31 7.6.2 Instrument for a.c.generators.32 7
