IEC 60092-350:2014

IEC 60092-350 ®
Edition 4.0 2014-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical installations in ships –
Part 350: General construction and test methods of power, control and
instrumentation cables for shipboard and offshore applications

Installations électriques à bord des navires –
Partie 350: Construction générale et méthodes d'essai des câbles d'énergie, de
commande et d'instrumentation des navires et des unités mobiles et fixes
en mer
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IEC 60092-350 ®
Edition 4.0 2014-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical installations in ships –

Part 350: General construction and test methods of power, control and

instrumentation cables for shipboard and offshore applications

Installations électriques à bord des navires –

Partie 350: Construction générale et méthodes d'essai des câbles d'énergie, de

commande et d'instrumentation des navires et des unités mobiles et fixes

en mer
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 29.060.20; 47.020.60 ISBN 978-2-8322-1786-3

– 2 – IEC 60092-350:2014 © IEC 2014

CONTENTS
FOREWORD . 7

1 Scope . 9

2 Normative references . 9

3 Terms and definitions . 11

4 Construction requirements . 16

4.1 General requirements . 16

4.1.1 General . 16
4.1.2 Voltage designation . 16
4.1.3 Cable marking . 16
4.1.4 Core identification. 17
4.1.5 Halogen-free cables . 17
4.2 Conductors . 17
4.2.1 Material . 17
4.2.2 Metal coating and separator . 17
4.2.3 Class and form . 18
4.2.4 Resistance . 18
4.3 Insulation system . 19
4.3.1 Material . 19
4.3.2 Application. 19
4.3.3 Insulation thickness . 19
4.4 Screens . 19
4.4.1 Conductor and insulation screens for high-voltage cables . 19
4.4.2 Screens (shields) for low voltage cables . 20
4.5 Cabling . 20
4.5.1 Multi-core cables . 20
4.5.2 Multi-unit cables . 20
4.6 Inner coverings, fillers and binders . 21
4.7 Inner sheath. 21
4.7.1 Material . 21
4.7.2 Application. 21
4.7.3 Thickness of inner sheath . 21
4.8 Metal braid armour . 21

4.8.1 Material . 21
4.8.2 Application. 22
4.9 Outer sheath . 22
4.9.1 Material . 22
4.9.2 Application. 22
4.9.3 Thickness of outer sheath . 22
5 Test methods . 23
5.1 Test conditions . 23
5.1.1 Ambient temperature . 23
5.1.2 Frequency, waveform and magnitude of power-frequency test voltages . 23
5.2 Routine tests . 23
5.2.1 General . 23
5.2.2 Measurement of the electrical resistance of the conductors . 23
5.2.3 Voltage test . 24

5.2.4 Partial discharge test . 25

6 Sample tests . 26

6.1 General . 26

6.2 Frequency of sample tests . 26

6.3 Repetition of tests . 26

6.4 Conductor examination . 26

6.5 Measurement of thickness of insulation . 27

6.5.1 General . 27

6.5.2 Procedure . 27

6.5.3 Requirements . 27
6.6 Measurements of thickness of non-metallic sheaths . 27
6.6.1 General . 27
6.6.2 Procedure . 27
6.6.3 Requirements . 27
6.7 Measurement of external diameter . 27
6.8 Hot-set test for insulations and sheaths . 27
6.8.1 General procedure . 27
6.8.2 Requirements . 28
6.9 Insulation resistance test (volume resistivity determination) . 28
7 Type tests, electrical . 29
7.1 General . 29
7.2 Insulation resistance measurement . 29
7.2.1 Measurement at ambient temperature . 29
7.2.2 Measurement at maximum rated temperature . 29
7.3 Increase in a.c. capacitance after immersion in water . 30
7.3.1 General . 30
7.3.2 Preparation of test specimens . 30
7.3.3 Apparatus . 30
7.3.4 Procedure . 30
7.3.5 Requirements . 30
7.4 High-voltage test for 4 h up to 1,8/3 kV . 31
7.4.1 General . 31
7.4.2 Requirement . 31
7.5 Mutual capacitance (control and instrumentation cables only) . 31
7.6 Inductance to resistance ratio (control and instrumentation cables only) . 31

7.7 High voltage sequence test (cables having a voltage rating higher than 3,6/6
(7,2) kV) . 31
7.7.1 General . 31
7.7.2 Special provisions . 31
7.7.3 Partial discharge test . 32
7.7.4 Bending test . 32
7.7.5 Tan δ measurement as a function of the voltage . 32
7.7.6 Tan δ measurement as a function of the temperature . 32
7.7.7 Heating cycle test plus partial discharge test . 33
7.7.8 Impulse withstand test, followed by a power-frequency voltage test . 33
7.7.9 High-voltage test for 4h . 33
8 Type tests, non-electrical . 33
8.1 General . 33
8.2 Measurement of thickness of insulation . 33

– 4 – IEC 60092-350:2014 © IEC 2014

8.3 Measurement of thickness of non-metallic sheaths (excluding inner

coverings) . 33

8.4 Tests for determining the mechanical properties of insulation before and

after ageing . 34

8.4.1 Sampling . 34

8.4.2 Ageing treatments . 34

8.4.3 Conditioning and mechanical tests. 34

8.4.4 Requirements . 34

8.5 Tests for determining the mechanical properties of sheaths before and after

ageing . 34

8.5.1 Sampling . 34
8.5.2 Ageing treatments . 34
8.5.3 Conditioning and mechanical tests. 34
8.5.4 Requirements . 34
8.6 Additional ageing test on pieces of completed cables (compatibility test) . 34
8.6.1 General . 34
8.6.2 Sampling . 35
8.6.3 Ageing treatment . 35
8.6.4 Mechanical tests . 35
8.6.5 Requirements . 35
8.7 Loss of mass test on PVC ST2 sheath . 35
8.7.1 Procedure . 35
8.7.2 Requirements . 35
8.8 Test for the behaviour of PVC ST2 and halogen-free SHF 1 sheaths at high
temperature (hot pressure test) . 35
8.8.1 Procedure . 35
8.8.2 Requirements . 35
8.9 Test for the behaviour of PVC sheath ST2 and halogen-free SHF 1 and SHF
2 sheaths at low temperature . 35
8.9.1 Procedure . 35
8.9.2 Requirements . 36
8.10 Special test for low temperature behaviour (when required) . 36
8.11 Test of the metal coating of copper wires . 36
8.12 Galvanizing test . 36
8.13 Test for resistance of PVC ST2 and halogen-free SHF1 sheaths to cracking
(heat shock test) . 36

8.13.1 Procedure . 36
8.13.2 Requirements . 36
8.14 Ozone resistance test for insulation and for sheaths . 36
8.14.1 Procedure . 36
8.14.2 Requirements . 36
8.15 Hot oil immersion test and enhanced hot oil immersion test for sheaths . 36
8.15.1 Hot oil immersion test . 36
8.15.2 Enhanced hot oil immersion test (when required) . 37
8.16 Mud drilling fluid test (when required) . 37
8.17 Fire tests . 37
8.17.1 Flame-spread test on single cables. 37
8.17.2 Flame-spread test on bunched cables . 37
8.17.3 Smoke emission test . 37
8.17.4 Acid gas emission test . 37

8.17.5 pH and conductivity test . 37

8.17.6 Fluorine content test . 37

8.17.7 Fire-resistance test (test for circuit integrity cables) . 38

8.18 Determination of hardness for HEPR . 38

8.19 Determination of elastic modulus for HEPR . 38

8.20 Durability of print . 38

Annex A (normative) Fictitious calculation method for determination of dimensions of

protective coverings . 39

A.1 Overview . 39

A.2 General . 39

A.3 Method . 39
A.3.1 Conductors . 39
A.3.2 Cores . 40
A.3.3 Diameter over laid-up cores . 41
A.3.4 Inner coverings . 43
A.3.5 Sheath . 43
A.3.6 Braid armour. 43
Annex B (informative) Recommended minimum spark test voltage levels (according to
IEC 62230) . 45
B.1 General . 45
B.2 Test voltages . 45
B.2.1 General . 45
B.2.2 Contact electrodes . 45
B.2.3 Non-contact electrodes . 46
Annex C (normative) Rounding of numbers . 47
C.1 Rounding of numbers for the purpose of the fictitious calculation method . 47
C.1.1 Rules . 47
C.1.2 Illustrations . 47
C.2 Rounding of numbers for other purposes . 47
Annex D (normative) Calculation of the lower and upper limits for the outer
dimensions of cables with circular copper conductors . 49
D.1 General . 49
D.2 Lower limit for the outer diameter . 49
D.3 Upper limit for the outer diameter . 49
D.4 Thickness of the mandatory or optional coverings other than the insulation

and the sheath(s) . 50
Annex E (normative) Cold bend test and impact test for low temperature behaviour . 52
E.1 Cold bend test at any specified low temperature . 52
E.1.1 Method No. 1 . 52
E.1.2 Method No. 2 . 52
E.1.3 Examination and Requirements . 53
E.2 Impact test at any specified low temperature. 53
E.2.1 Apparatus . 53
E.2.2 Procedures . 53
E.2.3 Requirements . 53
Bibliography . 54

Table 1 – Minimum size of conductors . 18
Table 2 – Routine test voltage . 25

– 6 – IEC 60092-350:2014 © IEC 2014

Table 3 – Number of samples according to cable length . 26

Table 4 – Tan δ versus voltage . 32

Table 5 – Tan δ versus temperature . 32

Table 6 – Impulse withstand voltages . 33

Table 7 – Test methods and requirements for halogen-free components . 38

Table A.1 – Fictitious diameter of conductor . 40

Table A.2 – Increase of diameter for concentric conductors and metallic screens made

of tape or wire . 40

Table A.3 – Assembly coefficient k for laid–up . 42

Table A.4 – Coefficient c . 43
f
Table B.1 – Recommended minimum spark-test voltages for cables having rated
voltage (U ) between 150 V and 1 800 V . 45
Table D.1 – Lower and upper limits of circular copper conductors for cables for fixed
installations . 51
Table E.1 – Details of low temperature bending test . 52

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ELECTRICAL INSTALLATIONS IN SHIPS –

Part 350: General construction and test methods of power, control

and instrumentation cables for shipboard and offshore applications

FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60092-350 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.
This fourth edition cancels and replaces the third edition published in 2008 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) reference to IEC 60092-360 for both the insulating and sheathing compounds;
b) partial discharge tests have been transferred from IEC 60092-354 to align it with
IEC 60092-353;
c) requirements for oil and drilling-fluid resistance (former Annexes F and G) have been
transferred to IEC 60092-360;
– 8 – IEC 60092-350:2014 © IEC 2014

d) requirements for cold bending and shocks have been improved;

e) the document reflects the changes of material types that have been introduced during the

development of IEC 60092-353 and IEC 60092-360.

The text of this standard is based on the following documents:

FDIS Report on voting
18A/374/FDIS 18A/378/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.
The list of all the parts of the IEC 60092 series, under the general title Electrical installations
in ships, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability 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.
The contents of the corrigendum of November 2018 have been included in this copy.

ELECTRICAL INSTALLATIONS IN SHIPS –

Part 350: General construction and test methods of power, control

and instrumentation cables for shipboard and offshore applications

1 Scope
This part of IEC 60092 provides the general constructional requirements and test methods for
use in the manufacture of electric power, control and instrumentation cables with copper
conductors intended for fixed electrical systems at voltages up to and including 18/30(36) kV
on board ships and offshore (mobile and fixed) units.
The reference to fixed systems includes those that are subjected to vibration (due to the
movement of the ship or installation) or movement (due to motion of the ship or installation)
and not to those that are intended for frequent flexing. Cables suitable for frequent or
continual flexing use are detailed in other IEC standards, for example IEC 60227 and
IEC 60245, and their uses are restricted to those situations which do not directly involve
exposure to a marine environment, for example, portable tools and domestic appliances.
The following types of cables are not included:
– optical fibre;
– sub-sea and umbilical cables;
– data and communication cables;
– coaxial cables.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050-461, International Electrotechnical Vocabulary – Part 461: Electric cables
IEC 60092-353, Electrical installations in ships – Part 353: Power cables for rated voltages

1 kV and 3 kV
IEC 60092-360:2014, Electrical installations in ships – Part 360: Insulating and sheathing
materials for shipboard and offshore units, power, control, instrumentation, telecommunication
and data cables
IEC 60228, Conductors of insulated cables
IEC 60230, Impulse tests on cables and their accessories
IEC 60331-1, Tests for electric cables under fire conditions – Circuit integrity – Part 1: Test
method for fire with shock at a temperature of at least 830 °C for cables of rated voltage up to
and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm

– 10 – IEC 60092-350:2014 © IEC 2014

IEC 60331-2, Tests for electric cables under fire conditions – Circuit integrity – Part 2: Test

method for fire with shock at a temperature of at least 830 °C for cables of rated voltage up to

and including 0,6/1,0 kV and with an overall diameter not exceeding 20 mm

IEC 60331-11, Tests for electric cables under fire conditions – Circuit integrity – Part 11:

Apparatus – Fire alone at a flame temperature of at least 750 °C

IEC 60331-21, Tests for electric cables under fire conditions – Circuit integrity – Part 21:

Procedures and requirements – Cables of rated voltage up to and including 0,6/1,0 kV

IEC 60332-1-2, Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test

for vertical flame propagation for a single insulated wire or cable – Procedure for 1 kW pre-
mixed flame
IEC 60332-3-22, Tests on electric cables under fire conditions – Part 3-22: Test for vertical
flame spread of vertically-mounted bunched wires or cables – Category A
IEC 60684-2, Flexible insulating sleeving – Part 2: Methods of test
IEC 60754-1, Test on gases evolved during combustion of materials from cables – Part 1:
Determination of the halogen acid gas content
IEC 60754-2, Test on gases evolved during combustion of materials from cables – Part 2:
Determination of acidity (by pH measurement) and conductivity
IEC 60811-201, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 201: General tests – Measurement of insulation thickness
IEC 60811-202, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 202: General tests – Measurement of thickness of non-metallic sheath
IEC 60811-203, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 203: General tests – Measurement of overall dimensions
IEC 60811-401, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 401: Miscellaneous tests – Thermal ageing methods – Ageing in an air oven
IEC 60811-403, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 403: Miscellaneous tests – Ozone resistance test on cross-linked compounds

IEC 60811-404, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 404: Miscellaneous tests – Mineral oil immersion tests for sheaths
IEC 60811-409, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 409: Miscellaneous tests – Loss of mass test for thermoplastic insulations and sheaths
IEC 60811-501, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 501: Mechanical tests – Tests for determining the mechanical properties of insulating and
sheathing compounds
IEC 60811-504, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 505: Mechanical tests – Bending tests at low temperature for insulations and sheaths
IEC 60811-505, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 505: Mechanical tests – Elongation at low temperature for insulations and sheaths

IEC 60811-506, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 505: Mechanical tests – Impact test at low temperature for insulations and sheaths

IEC 60811-507, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 507: Mechanical tests – Hot set test for cross-linked materials

IEC 60811-508, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 508: Mechanical tests – Pressure test at high temperature for insulation and sheaths

IEC 60811-509, Electric and optical fibre cables – Test methods for non-metallic materials –

Part 509: Mechanical tests – Test for resistance of insulations and sheaths to cracking (heat

shock test)
IEC 60885-2, Electrical test methods for electric cables. Part 2: Partial discharge tests
IEC 61034-1, Measurement of smoke density of cables burning under defined conditions –
Part 1: Test apparatus
IEC 61034-2, Measurement of smoke density of cables burning under defined conditions –
Part 2: Test procedure and requirements
ISO 7989-2:2007, Steel wire and wire products – Non-ferrous metallic coatings on steel wire –
Part 2: Zinc or zinc-alloy coating
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-461 as well
as the following terms and definitions apply.
3.1
approximate value
value which is neither guaranteed nor checked
Note 1 to entry: It is used, for example, for the calculation of other di
...