IEC TR 60092-370:2009
(Main)Electrical installations in ships - Part 370: Guidance on the selection of cables for telecommunication and data transfer including radio-frequency cables
Electrical installations in ships - Part 370: Guidance on the selection of cables for telecommunication and data transfer including radio-frequency cables
IEC/TR 60092-370:2009(E) Technical Report gives guidance and lays down the basic recommendations for the selection and installation of shipboard and offshore unit cables intended for electrical systems used in both essential and non-essential analogue or digital signal communication, transmission and control networks, including types suitable for high-frequency signals (i.e. signals with a frequency of more than 105 Hz). These cables are not suitable for direct connection to low impedance supplies. Where such cables are required, attention is drawn to IEC 60092-353.
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IEC/TR 60092-370 ®
Edition 1.0 2009-07
TECHNICAL
REPORT
Electrical installations in ships –
Part 370: Guidance on the selection of cables for telecommunication and data
transfer including radio-frequency cables
IEC/TR 60092-370:2009(E)
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IEC/TR 60092-370 ®
Edition 1.0 2009-07
TECHNICAL
REPORT
Electrical installations in ships –
Part 370: Guidance on the selection of cables for telecommunication and data
transfer including radio-frequency cables
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
R
ICS 29.060.20; 47.020.60 ISBN 978-2-88910-054-5
– 2 – TR 60092-370 © IEC:2009(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Terms and definitions .6
3 Selection of cables .6
4 Fundamental considerations .6
5 Constructional considerations.7
5.1 Selection of conductor.7
5.2 Selection of insulation .7
5.3 Cable elements .7
5.4 Selection of screen, core screen or shield .7
5.5 Selection of outer protection.8
5.6 Selection of metallic sheath (covering), braid or armour .8
6 Marking .8
7 Guidance on the selection of appropriate tests .8
8 Guide to use.9
8.1 Introduction .9
8.2 General .9
8.3 Voltage rating.9
8.3.1 Data and telecommunication cables .9
8.3.2 High-frequency radio communications cables .10
8.4 Current ratings .10
8.5 Thermal considerations .10
8.6 Size of conductors.10
8.7 Radius of bend .10
8.8 Tensile stress.11
8.9 Compression .11
8.10 Mechanical damage .11
8.11 Electromagnetic interference .11
8.12 Terminations .12
8.13 Joints .12
9 Performance in a fire .12
Annex A (informative) Table of tests .14
Bibliography.17
Table 1 – Classification of cables by frequency range.9
TR 60092-370 © IEC:2009(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATIONS IN SHIPS –
Part 370: Guidance on the selection of cables for telecommunication
and data transfer including radio-frequency cables
FOREWORD
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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
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The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 60092-370, which is a technical report, has been prepared by subcommittee 18A: Electric
cables for ships and mobile and fixed offshore units, of IEC technical committee 18: Electrical
installations of ships and of mobile and fixed offshore units.
– 4 – TR 60092-370 © IEC:2009(E)
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
18A/289/DTR 18A/302/RVC
Full information on the voting for the approval of this technical report 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 60092 series can be found, under the general title Electrical
installations in ships, on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
TR 60092-370 © IEC:2009(E) – 5 –
INTRODUCTION
IEC 60092 series of International Standards concerns electrical installations in sea-going
ships, and fixed and mobile offshore units, incorporating good practice and co-ordinating as
far as possible existing rules.
These standards form a code of practical interpretation and amplification of the requirements
of the International Convention on Safety of Life at Sea, a guide for future regulations which
may be prepared and a statement of practice for use by shipowners, shipbuilders, mobile and
fixed offshore units owners and builders and appropriate organisations.
This IEC/TR 60092-370 has been prepared by the maintenance team MT2 of the IEC
subcommittee 18A.
Cables selected for installation onboard ships and on offshore installations are usually
installed and are expected to operate in much harsher environments than equivalent land
based types. The risk of mechanical abuse during installation, physical dislocation due to
tension and bending allied with extremes of temperature are examples of the conditions to
which these cables may be subject. If faults occur unlike onshore installations, trained
experienced technicians may not always be readily available to affect a repair or replacement.
– 6 – TR 60092-370 © IEC:2009(E)
ELECTRICAL INSTALLATIONS IN SHIPS –
Part 370: Guidance on the selection of cables for telecommunication
and data transfer including radio-frequency cables
1 Scope
This Technical Report gives guidance and lays down the basic recommendations for the
selection and installation of shipboard and offshore unit cables intended for electrical systems
used in both essential and non-essential analogue or digital signal communication,
transmission and control networks, including types suitable for high-frequency signals (i.e.
signals with a frequency of more than 10 Hz
...
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