IEC 61892-5:2014

Mobile and fixed offshore units - Electrical installations - Part 5: Mobile units

IEC 61892-5:2014 specifies the characteristics for electrical installations in mobile units, for use during transfer from one location to another and for use during the exploration and exploitation of petroleum resources. It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations up to and including 35 000 V and DC installations up to and including 1 500 V (AC and DC voltages are nominal values). This third edition includes the following significant technical change with respect to the previous edition: the requirement to protection against flooding has been rewritten.

Unités mobiles et fixes en mer - Installations électriques - Partie 5: Unités mobiles

L'IEC 61892-5:2014 spécifie les caractéristiques des installations électriques dans les unités mobiles, à utiliser lors du transfert d'un emplacement à un autre et à utiliser pendant l'exploration et l'exploitation des ressources pétrolières. Elle s'applique à toutes les installations, qu'elles soient permanentes ou provisoires, mobiles ou portatives, en courant alternatif jusqu'à 35 000 V inclus ou en courant continu jusqu'à 1 500 V inclus (les tensions alternatives et continues sont des valeurs nominales). Cette troisième édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: l'exigence d'une protection contre les submersions a été réécrite.

General Information

• Status: Published
• Publication Date: 05-Nov-2014
• ICS: 29.240.20 - Power transmission and distribution lines
• ICS: 33.200 - Telecontrol. Telemetering
• 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
• Drafting Committee: MT 18 - TC 18/MT 18
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 09-Apr-2019

Relations

• Revises: IEC 61892-5:2010 - Mobile and fixed offshore units - Electrical installations - Part 5: Mobile units
• Effective Date: 05-Sep-2023
• Revised: IEC 61892-5:2019 - Mobile and fixed offshore units - Electrical installations - Part 5: Mobile units
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61892-5


®


Edition 3.0 2014-11



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE


Mobile and fixed offshore units – Electrical installations –
Part 5: Mobile units

Unités mobiles et fixes en mer – Installations électriques –
Partie 5: Unités mobiles


IEC 61892-5:2014-11(en-fr)

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IEC 61892-5



®



Edition 3.0 2014-11







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE











Mobile and fixed offshore units – Electrical installations –

Part 5: Mobile units




Unités mobiles et fixes en mer – Installations électriques –

Partie 5: Unités mobiles

















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX W


ICS 47.020.60 ISBN 978-2-8322-1922-5



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 61892-5:2014 © IEC 2014


CONTENTS



FOREWORD . 5

INTRODUCTION . 7

1 Scope . 8


2 Normative references . 8

3 Terms and definitions . 9

4 General requirements . 10


4.1 Protection against flooding . 10
4.2 Rotating machines . 10
4.3 Conductors, equipment and apparatus . 10
4.4 Main switchboards . 10
4.5 Axes of rotation . 11
5 Limits of inclination of the unit . 11
5.1 Authority requirement . 11
5.2 Machines, equipment and apparatus – General . 11
5.3 Propulsion machinery. 11
5.4 Emergency machinery . 11
5.5 Dynamic condition. 11
6 Bilge pumps. 12
6.1 Power supply . 12
6.2 Cables and cable connections. 12
6.3 Location of starting arrangement . 12
7 Navigation lights . 12
7.1 General . 12
7.2 Navigation lights when in operation . 12
7.3 Steaming lights . 12
7.4 Collision regulations. 12
7.5 Power supply and monitoring systems . 12
7.6 Special requirements for lights using LEDs . 13
8 Steering gear . 13
8.1 Power operated steering gear . 13
8.2 Motors . 14

8.3 Motor starters . 14
8.4 Power circuits supply . 14
8.5 Supply of control circuits and control systems . 14
8.6 Circuit protection . 15
8.7 Starting and stopping of motors for steering gear power units . 15
8.8 Steering gear control systems . 15
8.9 Alarms and indications . 16
8.10 Rudder angle indication . 16
8.11 Separation of circuits . 16
8.12 Communication between navigating bridge and steering gear compartment . 16
9 Electric propulsion . 16
9.1 General . 16
9.2 General requirements . 17
9.2.1 Torque and critical speeds . 17

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IEC 61892-5:2014 © IEC 2014 – 3 –


9.2.2 Lubrication . 18

9.2.3 Prime movers . 18

9.3 Electromagnetic compatibility (EMC) and harmonic distortion . 19

9.3.1 General . 19

9.3.2 Total harmonic distortion, THD . 19

9.3.3 Radio frequency interference . 19

9.4 Harmonic filtering . 19

9.5 Generators, motors, semiconductor converters and electric slip-couplings . 20

9.5.1 Machine and equipment temperature and ventilation . 20

9.5.2 Accessibility and facilities for repair in situ . 20

9.5.3 Protection against moisture and condensate . 21
9.5.4 Sudden short circuits . 21
9.5.5 Overspeed of propulsion motors . 21
9.5.6 Exciter sets. 21
9.5.7 Semiconductor converter design data . 21
9.6 Protection against moisture and condensation . 22
9.7 Controlgear . 22
9.7.1 Location of manoeuvring controls . 22
9.7.2 Engine order systems . 22
9.7.3 Operation of manoeuvring controls . 22
9.7.4 Interlocking of the means of control . 23
9.8 Cables and wiring . 23
9.8.1 Conductors . 23
9.8.2 Internal wiring . 23
9.8.3 Bus-bars . 23
9.9 Main and control circuits . 24
9.9.1 Control . 24
9.9.2 Power management system . 24
9.9.3 Circuitry and components . 25
9.10 Protection of the system . 26
9.10.1 Protection . 26
9.10.2 Instrumentation . 27
9.11 Propulsion transformers . 28
9.12 Testing . 28
10 Dynamic positioning . 28

11 Ballast systems . 29
11.1 General . 29
11.2 Ballast pumps . 29
11.3 Control and indicating systems . 29
11.4 Internal communication . 30
11.5 Protection against flooding . 30
12 Jacking systems . 30
12.1 General . 30
12.2 Design . 31
12.3 Holding capacity . 31
12.4 Electric motor capacity . 31
12.5 Control and monitoring . 31
12.6 Jacking gear motors and motor controller. 32
12.6.1 General . 32

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12.6.2 Group installation . 32

12.6.3 Overcurrent protection . 32

12.6.4 Running protection . 32

12.6.5 Metering . 32

12.7 Testing on board . 32

13 Anchoring systems . 32

13.1 General . 32

13.2 Anchoring arrangements . 32

13.3 Control systems . 33

13.4 Thruster-assisted anchoring systems (TA) . 33
Annex A (informative) Enhanced system verification test (HIL test) for dynamic
positioned mobile units . 34
A.1 General . 34
A.2 Scope of HIL testing . 34
A.3 Schedule and work process . 35
A.4 Requirements to control systems manufacturer . 35
A.5 Documentation and approval . 35
Bibliography . 36

Figure 1 – Typical equipment (configuration) for unit with one or two propellers . 17
Figure 2 – Typical control configuration . 25

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IEC 61892-5:2014 © IEC 2014 – 5 –



INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________




MOBILE AND FIXED OFFSHORE UNITS –

ELECTRICAL INSTALLATIONS –



Part 5: Mobile units



FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61892-5 has been prepared by IEC technical committee 18:
Electrical installations of ships and of mobile and fixed offshore units.
This third edition cancels and replaces the second edition published in 2010. This edition
constitutes a technical revision.
This third edition includes the following significant technical change with respect to the
previous edition:
The requirement to protection against flooding has been rewritten.

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– 6 – IEC 61892-5:2014 © IEC 2014


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

FDIS Report on voting


18/1424/FDIS 18/1439/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 requirements specified in this International Standard are based on the Code for the
Construction and Equipment of Mobile Offshore Drilling Units (1989 MODU CODE) published
by the International Maritime Organization (IMO), and might include additional provisions.
A list of all the parts in the IEC 61892 series, published under the general title Mobile and
fixed offshore units – Electrical installations, 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.

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IEC 61892-5:2014 © IEC 2014 – 7 –


INTRODUCTION


IEC 61892 forms a series of International Standards intended to ensure safety in the design,

selection, installation, maintenance and use of electrical equipment for the generation,

storage, distribution and utilization of electrical energy for all purposes in offshore units used

for exploration or exploitation of petroleum resources.


This part of IEC 61892 also incorporates and co-ordinates, as far as possible, existing rules

and forms a code of interpretation, where applicable, of the requirements laid down by the

International Maritime Organization, and constitutes a guide for future regulations which may

be prepared and a statement of practice for offshore unit owners, constructors and

appropriate organizations. This standard is based on equipment and practices which are in
current use, but it is not intended in any way to impede development of new or improved
techniques.
The ultimate aim has been to produce a set of International Standards exclusively for the
offshore petroleum industry.

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– 8 – IEC 61892-5:2014 © IEC 2014


MOBILE AND FIXED OFFSHORE UNITS –

ELECTRICAL INSTALLATIONS –



Part 5: Mobile units








1 Scope


This part of IEC 61892 specifies the characteristics for electrical installations in mobile units,
for use during transfer from one location to another and for use during the exploration and
exploitation of petroleum resources.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC
installations up to and including 35 000 V and DC installations up to and including 1 500 V.
(AC and DC voltages are nominal values).
NOTE Attention is drawn to further requirements concerning electrical installations on such mobile offshore units
contained in the MODU CODE of the International Maritime Organization (IMO).
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 60034-1, Rotating electrical machines – Part 1: Rating and performance
IEC 60076 (all parts), Power transformers
IEC 60092-501:2013, Electrical installations in ships – Part 501: Special features – Electric
propulsion plant
IEC 60092-504, Electrical installations in ships – Part 504: Special features – Control and
instrumentation
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 61000-6-2:2005, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –
Immunity for industrial environments
IEC 61378-1, Converter transformers – Part 1: Transformers for industrial applications
IEC 61892-1, Mobile and fixed offshore units – Electrical installations – Part 1: General
requirements and conditions
IEC 61892-2, Mobile and fixed offshore units – Electrical installations – Part 2: System design
IEC 61892-3, Mobile and fixed offshore units – Electrical installations – Part 3: Equipment

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IEC 61892-5:2014 © IEC 2014 – 9 –


IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation


International Convention for the Safety of Life at Sea (SOLAS):1974, Consolidated edition

2009


IALA, Internation
...