Mobile and fixed offshore units - Electrical installations - Part 3: Equipment

IEC 61892-3:2019 is applicable to electrical equipment in mobile and fixed offshore units including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations.
This document specifies requirements such as those concerning
– enclosures, with regard to material, marking (nameplates and labels), ventilation, earthing, EMC and short-circuit rating of components, and
– specific requirements related to use in an offshore unit, such as
• generators and motors,
• transformers,
• switchgear and control gear assemblies,
• instrumentation of power sources,
• semiconductor converters,
• secondary cells and batteries,
• luminaires,
• communication equipment,
• control and instrumentation, and
• accessories for accommodation and similar areas.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the previous voltage limitations have been removed;
b) Clause 4 has been completely rewritten, giving general requirements as to relevant electrical equipment;
c) requirements concerning pyrotechnic fault current limiters have been added;
d) requirements as to gas insulated switchgear have been added;
e) the requirement concerning the isolation of supply to galley has been moved to IEC 61892-2;
f) requirements concerning control and instrumentation have been rewritten, based on changes in IEC 61892-2.

Unités mobiles et fixes en mer - Installations électriques - Partie 3: Equipement

L'IEC 61892-3:2019 s'applique aux équipements électriques dans les unités mobiles et fixes en mer, y compris les canalisations, les stations de pompage ou de raclage, les stations de compression et les systèmes d'amarrage à point unique, qui sont utilisés dans l'industrie pétrolière en mer (offshore) pour le forage, la production, les lieux d'habitation, le traitement, le stockage et le déchargement.
Elle s'applique à toutes les installations, qu'elles soient permanentes ou provisoires, transportables ou portatives, aux installations en courant alternatif et aux installations en courant continu sans aucune limitation du niveau de tension. Les normes des équipements référencés peuvent fournir des limites de niveau de tension.
Le présent document spécifie des exigences pour
– les enveloppes, eu égard au matériau, au marquage (plaques signalétiques et étiquettes), à la ventilation, à la mise à la terre, à la CEM et aux valeurs assignées de court-circuit des composants, et
– les exigences spécifiques relatives à l'utilisation dans une unité en mer, telles que
• les générateurs et moteurs,
• les transformateurs
• les ensembles d'appareillages de connexion et de commande,
• l'instrumentation des sources d'alimentation,
• les convertisseurs à semiconducteurs,
• les accumulateurs et batteries d'accumulateurs,
• les luminaires,
• les équipements de communication,
• la commande et l'instrumentation, et
• les accessoires pour les lieux d'habitation et les espaces similaires.
Le présent document ne s'applique pas
– aux équipements fixes destinés aux applications médicales,
– aux installations électriques des navires-citernes, et
– au contrôle des sources d'incendie autres que celles générées par l'équipement électrique.
Cette quatrième édition annule et remplace la troisième édition parue en 2012. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les limitations de tension précédentes ont été supprimées;
b) l'Article 4 a été intégralement réécrit pour indiquer les exigences générales relatives aux équipements électriques appropriés;
c) des exigences relatives aux limiteurs de courant de défaut pyrotechnique ont été ajoutées;
d) des exigences relatives aux appareils à isolation gazeuse ont été ajoutées;
e) les exigences relatives à l'isolation de l'alimentation des cuisines ont été déplacées vers l'IEC 61892-2;
f) les exigences relatives à la commande et à l'instrumentation ont été réécrites en fonction des modifications de l'IEC 61892-2.

General Information

Status
Published
Publication Date
08-Apr-2019
Current Stage
PPUB - Publication issued
Completion Date
09-Apr-2019
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IEC 61892-3
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Mobile and fixed offshore units – Electrical installations –
Part 3: Equipment
Unités mobiles et fixes en mer – Installations électriques –
Partie 3: Équipement
IEC 61892-3:2019-04(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61892-3
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Mobile and fixed offshore units – Electrical installations –
Part 3: Equipment
Unités mobiles et fixes en mer – Installations électriques –
Partie 3: Équipement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.60 ISBN 978-2-8322-6668-7

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
---------------------- Page: 3 ----------------------
– 2 – IEC 61892-3:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 6

INTRODUCTION ..................................................................................................................... 8

1 Scope .............................................................................................................................. 9

2 Normative references .................................................................................................... 10

3 Terms and definitions .................................................................................................... 13

4 General requirements .................................................................................................... 15

4.1 General ................................................................................................................. 15

4.2 Access for maintenance, operation and inspection ................................................ 15

4.3 Access to interface ............................................................................................... 16

4.4 Documentation ...................................................................................................... 16

4.5 Nameplates and labels .......................................................................................... 16

4.6 Signal lamps ......................................................................................................... 16

4.7 Component and wiring identification (inside cabinet) ............................................. 16

4.7.1 Marking of components inside cabinet ........................................................... 16

4.7.2 Internal wiring and marking of supplier's standard equipment ........................ 17

4.7.3 Marking of internal wiring in project specific parts of equipment ..................... 17

4.7.4 Marking of AC busbars .................................................................................. 17

4.7.5 Marking of DC busbars .................................................................................. 17

4.7.6 Marking of earth bars ..................................................................................... 17

4.8 Enclosures/material .............................................................................................. 17

4.9 Cabinet doors ....................................................................................................... 18

4.10 Protection against direct contact ........................................................................... 18

4.11 Protection against fluid leakage ............................................................................ 18

4.12 Ventilation/cooling by air ....................................................................................... 18

4.13 Cooling by liquids ................................................................................................. 19

4.13.1 General ......................................................................................................... 19

4.13.2 Forced cooling systems ................................................................................. 19

4.14 Earthing ................................................................................................................ 19

4.14.1 General ......................................................................................................... 19

4.14.2 PE bar ........................................................................................................... 20

4.14.3 IE bar ............................................................................................................ 20

4.14.4 IS bar ............................................................................................................ 22

4.14.5 Voltage and current transformers ................................................................... 22

4.15 Electromagnetic compatibility and interference prevention means ......................... 22

4.16 Termination of external cables/terminal design ..................................................... 22

4.17 Internal wiring and terminations ............................................................................ 23

4.18 Control voltage ..................................................................................................... 23

4.19 Components' short-circuit rating ............................................................................ 23

4.20 Protection from condensation ................................................................................ 23

5 Generators and motors .................................................................................................. 24

5.1 General ................................................................................................................. 24

5.2 Voltage regulation of generators ........................................................................... 24

5.2.1 General ......................................................................................................... 24

5.2.2 DC generators ............................................................................................... 24

5.2.3 AC generators ............................................................................................... 24

5.3 Generators for special purposes ........................................................................... 25

---------------------- Page: 4 ----------------------
IEC 61892-3:2019 © IEC 2019 – 3 –

5.3.1 DC generators ............................................................................................... 25

5.3.2 AC generators ............................................................................................... 25

5.4 Parallel operation of general service generators – AC generators ......................... 26

5.4.1 Reactive load sharing .................................................................................... 26

5.4.2 Active load sharing ........................................................................................ 26

5.4.3 Flywheel effect for AC generators .................................................................. 26

5.4.4 Excitation of AC generators ........................................................................... 26

5.5 Mechanical features (generators and motors) ....................................................... 26

5.5.1 Cooling by liquid ............................................................................................ 26

5.5.2 Accumulation of moisture and condensation .................................................. 27

5.5.3 Balance ......................................................................................................... 27

5.5.4 Shaft currents ................................................................................................ 27

5.5.5 Terminals ...................................................................................................... 27

5.6 Lubrication (generators and motors) ..................................................................... 27

5.7 Prime movers ........................................................................................................ 27

5.7.1 General ......................................................................................................... 27

5.7.2 Speed governing characteristics .................................................................... 28

5.8 Cyclic irregularity .................................................................................................. 28

5.9 Lubrication (prime movers) ................................................................................... 29

5.10 Running speed ...................................................................................................... 29

5.11 Testing ................................................................................................................. 29

6 Transformers ................................................................................................................. 29

6.1 General ................................................................................................................. 29

6.2 Winding arrangement ............................................................................................ 30

6.3 Terminals .............................................................................................................. 30

6.4 Cooling arrangement............................................................................................. 30

6.5 Liquid-immersed transformers not hermetically sealed .......................................... 30

6.6 Voltage regulation ................................................................................................. 30

7 Switchgear and controlgear assemblies ......................................................................... 31

7.1 General ................................................................................................................. 31

7.2 Definitions............................................................................................................. 31

7.3 Locking facilities ................................................................................................... 31

7.4 Low-voltage switchgear and controlgear assemblies ............................................. 31

7.4.1 General ......................................................................................................... 31

7.4.2 Circuits .......................................................................................................... 31

7.4.3 Design and construction ................................................................................ 31

7.4.4 Design verification ......................................................................................... 33

7.5 Switchgear and controlgear in the range above 1 kV to 52 kV ............................... 33

7.5.1 General ......................................................................................................... 33

7.5.2 Service conditions ......................................................................................... 33

7.5.3 Design and construction ................................................................................ 34

7.5.4 Circuit-breakers, switches and fuses.............................................................. 34

7.5.5 Earthing and short-circuiting .......................................................................... 35

7.5.6 Protection against contact with live parts ....................................................... 35

7.6 Switchgear and controlgear above 52 kV .............................................................. 35

7.6.1 General ......................................................................................................... 35

7.6.2 Service conditions ......................................................................................... 35

7.6.3 Design and construction ................................................................................ 35

7.6.4 Use of SF6 .................................................................................................... 36

---------------------- Page: 5 ----------------------
– 4 – IEC 61892-3:2019 © IEC 2019

7.6.5 Gas pressure and density monitoring ............................................................. 36

7.6.6 Tightness ....................................................................................................... 36

7.6.7 Power connection .......................................................................................... 36

7.6.8 Equipment handling ....................................................................................... 36

7.7 Instruments for assemblies ................................................................................... 36

7.7.1 General ......................................................................................................... 36

7.7.2 Instrument for AC generators ......................................................................... 36

7.7.3 Instrument for DC power sources ................................................................... 37

7.7.4 Instruments for UPS ...................................................................................... 37

7.7.5 Instruments measuring the insulation level to earth ....................................... 37

7.7.6 Design of instruments .................................................................................... 37

7.7.7 Transformers provided for instrumentation, protection and control

circuits ........................................................................................................... 38

7.7.8 Synchronizing devices ................................................................................... 38

7.7.9 Speed governor ............................................................................................. 38

8 Semiconductor converters ............................................................................................. 38

8.1 General ................................................................................................................. 38

8.2 Cooling arrangements ........................................................................................... 39

8.3 Service conditions ................................................................................................. 39

8.4 Application ............................................................................................................ 39

8.4.1 Forced cooling ............................................................................................... 39

8.4.2 Effects from and on the supply or load system ............................................... 39

8.5 Converter transformers ......................................................................................... 40

9 Secondary cells and batteries ........................................................................................ 40

9.1 General ................................................................................................................. 40

9.2 Types of batteries ................................................................................................. 40

9.2.1 General ......................................................................................................... 40

9.2.2 Valve regulated acid batteries (VRLA) ........................................................... 40

9.2.3 Nickel-cadmium batteries ............................................................................... 41

9.2.4 Vented lead-acid batteries ............................................................................. 41

9.2.5 Technology not described above ................................................................... 41

9.3 Charging facilities ................................................................................................. 41

9.4 Ventilation of secondary battery compartments ..................................................... 41

10 Luminaires ..................................................................................................................... 42

11 Heating and cooking appliances .................................................................................... 42

12 Resistance trace heating ............................................................................................... 42

13 Communication .............................................................................................................. 42

13.1 General ................................................................................................................. 42

13.2 Safety requirements .............................................................................................. 42

13.3 External communication systems .......................................................................... 42

13.4 Internal communication ......................................................................................... 43

13.4.1 General ......................................................................................................... 43

13.4.2 Public address and general alarm systems .................................................... 43

13.4.3 Other internal communication requirements ................................................... 43

13.5 Safety and maintenance........................................................................................ 44

14 Control and instrumentation ........................................................................................... 44

14.1 General ................................................................................................................. 44

14.2 Segregation .......................................................................................................... 45

---------------------- Page: 6 ----------------------
IEC 61892-3:2019 © IEC 2019 – 5 –

14.3 Accessibility .......................................................................................................... 45

14.4 Replacement ......................................................................................................... 45

14.5 Non-interchangeability .......................................................................................... 45

14.6 Cooling air ............................................................................................................ 45

14.7 Mechanical load on connecting devices ................................................................ 45

14.8 Mechanical features of cabinets ............................................................................ 45

14.9 Shock and vibration absorbers .............................................................................. 45

14.10 Internal wiring ....................................................................................................... 45

14.11 Cable terminations ................................................................................................ 45

14.12 Sensors ................................................................................................................ 46

14.13 Reliability .............................................................................................................. 46

14.14 Hardware modularity ............................................................................................. 46

14.15 Ancillary devices ................................................................................................... 46

14.16 Power supplies ..................................................................................................... 46

14.17 Testing ................................................................................................................. 46

14.18 Spares .................................................................................................................. 47

15 Accessories for accommodation and similar areas ......................................................... 47

15.1 General ................................................................................................................. 47

15.2 Switches ............................................................................................................... 47

15.3 Socket-outlets and plugs ....................................................................................... 47

Bibliography .......................................................................................................................... 49

Figure 1 – Typical example of PE, IE and IS bars with earth loop .......................................... 21

Figure 2 – Typical example of PE and combined IE and IS bars without earth loop ............... 21

Table 1 – Earth conductors for enclosures ............................................................................ 19

Table 2 – Limits of cyclic irregularity ..................................................................................... 28

---------------------- Page: 7 ----------------------
– 6 – IEC 61892-3:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MOBILE AND FIXED OFFSHORE UNITS –
ELECTRICAL INSTALLATIONS –
Part 3: Equipment
FOREWORD

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