IEC/IEEE 80005-3

FINAL DRAFT
International
Standard
IEC/IEEE
FDIS
80005-3
ISO/TC 8/SC 3
Utility connections in port —
Secretariat: ANSI
Part 3:
Voting begins on:
2025-05-13
Low Voltage Shore Connection
(LVSC) Systems — General
Voting terminates on:
2025-07-08
requirements
Alimentation des navires à quai —
Partie 3: Systèmes de connexion à quai à basse tension —
Exigences générales
Member bodies are requested to consult relevant national interests in IEC/TC
18 before casting their ballot to the e-Balloting application.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
This draft is submitted to a parallel vote in ISO and in IEC.
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
IEC/IEEE FDIS 80005­3:2025(en) © ISO 2025

FINAL DRAFT
IEC/IEEE FDIS 80005-3:2025(en)
International
Standard
IEC/IEEE
FDIS
80005-3
ISO/TC 8/SC 3
Utility connections in port —
Secretariat: ANSI
Part 3:
Voting begins on:
Low Voltage Shore Connection 2025-05-13
(LVSC) Systems — General
Voting terminates on:
2025-07-08
requirements
Alimentation des navires à quai —
Partie 3: Systèmes de connexion à quai à basse tension —
Exigences générales
Member bodies are requested to consult relevant national interests in IEC/TC
18 before casting their ballot to the e-Balloting application.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
This draft is submitted to a parallel vote in ISO and in IEC.
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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Phone: +41 22 749 01 11
Email: copyright@iso.org
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Published in Switzerland Reference number
IEC/IEEE FDIS 80005­3:2025(en) © ISO 2025

ii
IEC/IEEE FDIS 80005-3:2025(en)
– 2 – IEC/IEEE FDIS 80005-3
© IEC/IEEE 2025
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 10
4 General requirements . 12
4.1 System description. 12
4.2 Distribution system . 13
4.2.1 General . 13
4.2.2 Equipotential bonding . 14
4.3 Compatibility assessment before connection . 14
4.4 LVSC system design and operation . 14
4.4.1 System design . 14
4.4.2 System operation . 15
4.5 Personnel safety . 15
4.6 Design requirements . 15
4.6.1 General . 15
4.6.2 Protection against moisture and condensation . 15
4.6.3 Location and construction . 15
4.6.4 Electrical equipment in hazardous areas . 16
4.7 Electrical requirements . 16
4.8 System study and calculations . 17
4.9 Emergency shutdown including emergency-stop facilities . 17
5 LV shore supply system requirements . 18
5.1 Voltages and frequencies . 18
5.2 Quality of LV shore supply . 20
6 Shore-side installation . 20
6.1 General . 20
6.2 System component requirements . 20
6.2.1 Shore-side main circuit-breaker . 20
6.2.2 Shore power transformer . 21
6.2.3 System earthing methodology . 21
6.2.4 Protective earthing . 21
6.2.5 Equipotential bonding . 21
6.3 Shore-to-ship electrical protection system . 22
6.4 LV safety protocol, interlocking and communication . 23
6.4.1 General . 23
6.4.2 Operating of the low-voltage (LV) circuit-breakers and disconnectors . 23
6.5 Shore connection convertor equipment . 23
6.5.1 General . 23
6.5.2 Cooling . 24
6.5.3 Protection . 24
7 Ship-to-shore connection and interface equipment . 24
7.1 General . 24
7.2 Cable management system . 25

IEC/IEEE FDIS 80005-3:2025(en)
IEC/IEEE FDIS 80005-3 – 3 –
© IEC/IEEE 2025
7.2.1 General . 25
7.2.2 Monitoring of cable tension or position . 26
7.2.3 Monitoring of the cable length . 26
7.3 Ship and shore couplers . 27
7.3.1 General . 27
7.3.2 Safety loop scheme . 28
7.3.3 Pilot contacts . 31
7.4 Ship-to-shore connection cable . 31
7.5 Storage . 31
8 Ship-side installation . 31
8.1 General . 31
8.2 Ship electrical distribution system . 31
8.2.1 Short-circuit protection . 31
8.2.2 Earth fault protection, monitoring and alarm. 31
8.2.3 Distribution system earthing. 32
8.3 Shore connection switchboard . 32
8.3.1 General . 32
8.3.2 Ship-side main circuit-breaker . 32
8.3.3 Instrumentation and protection. 32
8.3.4 Operation of the circuit-breaker . 33
8.4 Onboard transformer . 33
8.5 Onboard main switchboard. 34
8.5.1 General . 34
8.5.2 Circuit-breaker . 34
8.5.3 Instrumentation . 34
8.5.4 Protection . 35
8.5.5 Operation of the circuit-breaker . 36
8.6 Ship power restoration . 36
9 LVSC system control and monitoring . 36
9.1 General requirements . 36
9.2 Load transfer via blackout . 36
9.3 Load transfer via automatic synchronization . 37
9.3.1 General . 37
9.3.2 Protection requirements . 37
10 Verification and testing . 37
10.1 General . 37
10.2 Initial tests of shore-side installation . 38
10.2.1 General . 38
10.2.2 Tests . 38
10.3 Initial tests of ship-side installation . 38
10.3.1 General . 38
10.3.2 Tests . 38
10.4 Tests of the LVSC system at the first call . 39
10.4.1 General . 39
10.4.2 Tests . 39
11 Periodic tests and maintenance . 39
11.1 General . 39
11.2 Tests and verification of the LVSC system at repeated calls . 40

IEC/IEEE FDIS 80005-3:2025(en)
– 4 – IEC/IEEE FDIS 80005-3
© IEC/IEEE 2025
12 Documentation . 40
12.1 General . 40
12.2 System description. 40
Annex A (informative) Shore-to-ship connection cable . 41
A.1 General
...