IEC 60092 201

BRITISH STANDARD BS IEC 60092-201:1994

Electrical installations in ships —

Part 201: System design — General

ICS 47.020.60

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BS IEC 60092-201:1994

This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 25 February 2002

© BSI 25 February 2002

ISBN 0 580 39026 8

National foreword

This British Standard reproduces verbatim IEC 60092-201:1994 and implements it as the UK national standard.

The UK participation in its preparation was entrusted to Technical Committee JPEL/18, Electrical installations of ships and of mobile and fixed offshore units, which has the responsibility to:

A list of organizations represented on this committee can be obtained on request to its secretary.

From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems.

Cross-references

The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue.

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— monitor related international and European developments and promulgate them in the UK.

Summary of pagesThis document comprises a front cover, an inside front cover, the IEC title page, pages 2 to 41 and a back cover

The BSI copyright date displayed in this document indicates when the document was last issued.

Amendments issued since publication

Amd. No. Date Comments

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BS IEC 60092−201:1994

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CONTENTS

Page

FOREWORD.......................................................................................................................... 4

INTRODUCTION ................................................................................................................... 7

Clause

1 Scope........................................................................................................................... 8

SECTION 1: DEFINITIONS

2 Definitions .................................................................................................................... 9

SECTION 2: SAFETY ASPECTS

3 General ...................................................................................................................... 11

SECTION 3:DISTRIBUTION SYSTEMS

4 D.C. distribution systems........................................................................................... 11

5 A.C. distribution systems ........................................................................................... 12

SECTION 4: SOURCES OF ELECTRICAL POWER

6 Source of electrical power for auxiliary services........................................................ 14

SECTION 5: DISTRIBUTION SYSTEM REQUIREMENTS

7 General ...................................................................................................................... 19

8 Methods of distribution............................................................................................... 19

9 Balance of loads ........................................................................................................ 20

10 Single-wire systems with hull return .......................................................................... 20

11 Final sub-circuits........................................................................................................ 21

12 Socket-outlets ............................................................................................................ 23

13 Lighting circuits in machinery spaces, accommodation spaces,cargo spaces, etc....................................................................................................... 23

14 Shore connections ..................................................................................................... 23

15 Navigation lights ........................................................................................................ 24

16 Radio installations...................................................................................................... 24

17 Submersible, permanently installed bilge-pumps...................................................... 24

18 Motor circuits ............................................................................................................. 25

19 Luminaires ................................................................................................................. 26

20 Internal communication circuits ................................................................................. 26

BS IEC 60092−201:1994


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SECTION 6: DIVERSITY (DEMAND) FACTORS

Clause Page

21 Final sub-circuits........................................................................................................ 27

22 Circuits other than final sub-circuits........................................................................... 27

23 Application of diversity (demand) factors................................................................... 27

24 Motive-power circuits ― General .............................................................................. 27

25 Cargo handling winch and crane circuits................................................................... 28

SECTION 7: DEGREES OF PROTECTION

26 General ...................................................................................................................... 29

SECTION 8: CABLES

27 Choice of cables ........................................................................................................ 29

28 Choice of insulation ................................................................................................... 29

29 choice of protective coverings ................................................................................... 31

30 Cables for fire alarm, fire detection and emergency fire extinguishing services ....... 32

31 Determination of the cross-sectional areas of conductors ........................................ 32

32 Current ratings for continuous services ..................................................................... 33

33 Correction factors for different ambient air temperatures.......................................... 33

34 Correction factors for cable grouping ........................................................................ 34

35 Correction factors for non-continuous services ......................................................... 36

36 Voltage drop .............................................................................................................. 36

37 Parallel connection of cables ..................................................................................... 37

38 Separation of circuits ................................................................................................. 37

39 Short-circuit capacity ................................................................................................. 37

40 Cables in refrigeration spaces ................................................................................... 37

Figures ................................................................................................................................. 39

BS IEC 60092−201:1994

© BSI 25 February 2002 3

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BS IEC 60092−201:1994


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BS IEC 60092-201:1994

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IEC 60092 201

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Transcript of IEC 60092 201