IEC 60092-503:2007

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

This part of IEC 60092 is applicable to a.c. supply systems with voltages from 1 kV up to and including 15 kV.

General Information

• Status: Published
• Publication Date: 04-Jun-2007
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 47.020.60 - Electrical equipment of ships and of marine structures
• Technical Committee: TC 18 - Electrical installations of ships and of mobile and fixed offshore units
• Current Stage: DELPUB - Deleted Publication
• Start Date: 07-Feb-2020
• Completion Date: 27-Oct-2021

Relations

• Revised: IEC 60092-503:2021 - Electrical installations in ships - Part 503: Special features - AC supply systems with voltages in the range of above 1 kV up to and including 36 kV
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 60092-503
Second edition
2007-06
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
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INTERNATIONAL IEC
STANDARD 60092-503
Second edition
2007-06
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
PRICE CODE
Commission Electrotechnique Internationale R
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 60092-503 © 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 Clearances 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 circuits.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.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 characteristics.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 .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
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 –

Part 503: Special features –
AC supply systems with voltages in the range
of above 1 kV up to and including 15 kV

FOREWORD
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International Standard IEC 60092-503 has been prepared by IEC technical committee 18:
Electrical installations of ships and of mobile and offshore units
This second edition cancels and replaces the first edition published in 1975. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition.
a) The scope is changed to an upper limit of the system voltage from 11 kV to 15 kV.
b) General requirements regarding warning notices, access to installations, clearances and
creepage distances of uninsulated conductors and earthing have been introduced.
c) Technical review has generally been made to update the standard according to general
requirements and referenced equipment standards.

60092-503 © IEC:2007(E) – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
18/1053/FDIS 18/1059/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 6009
...