IEC 62613-1:2011

IEC 62613-1 ®
Edition 1.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plugs, socket-outlets and ship couplers for high-voltage shore connection
systems (HVSC-Systems) –
Part 1: General requirements
Prises de courant et connecteurs de navire pour les systèmes haute tension
de raccordement des navires à quai –
Partie 1: Règles générales
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IEC 62613-1 ®
Edition 1.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plugs, socket-outlets and ship couplers for high-voltage shore connection
systems (HVSC-Systems) –
Part 1: General requirements
Prises de courant et connecteurs de navire pour les systèmes haute tension
de raccordement des navires à quai –
Partie 1: Règles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 29.120.30 ISBN 978-2-88912-545-6

– 2 – 62613-1  IEC:2011
CONTENTS
FOREWORD . 4

INTRODUCTION . 6

1 Scope . 7

2 Normative references . 7

3 Terms and definitions . 8

4 General . 11

5 Standard ratings . 12

6 Classification . 13
7 Marking . 13
8 Dimensions . 15
9 Protection against electric shock . 16
10 Provision for Earthing . 16
11 Terminals and terminations . 18
12 Locking devices and interlocks . 23
13 Resistance to ageing of rubber and thermoplastic material . 24
14 General construction . 24
15 Construction of socket-outlets and ship inlets . 26
16 Construction of ship connectors . 26
17 Construction of plugs . 26
18 Degrees of protection . 27
19 Insulation resistance, dielectric withstand and partial discharge tests . 28
20 Normal operation . 30
21 Temperature rise . 31
22 Flexible cables and their connection . 32
23 Mechanical strength . 35
24 Screws, current-carrying parts and connections . 36
25 Resistance to heat, to fire and to tracking . 38
26 Corrosion and resistance to rusting . 40
27 Conditional short-circuit current withstand test . 40

28 Electromagnetic compatibility . 42
Bibliography . 52

Figure 1 – Diagram showing the use of the accessories . 43
Figure 2 – Standard test finger. 44
Figure 3 – Circuit diagrams for normal operation tests of 3P+E accessories and 3P+E
with separate Neutral accessories . 45
Figure 4 – Apparatus for testing the cable anchorage . 46
Figure 5 – Arrangement for mechanical strength test for plugs and ship connectors. 46
Figure 6 – Gauges for testing insertability of round unprepared conductors having the
maximum specified cross-section . 47
Figure 7 – Examples of terminals . 49
Figure 8 – Test apparatus for checking damage to conductors . 49

62613-1  IEC:2011 – 3 –
Figure 9 – Diagram of the test circuit for the verification of short-circuit current

withstand of a three-pole equipment . 50

Figure 10 – Diagram of the test circuit for the verification of short-circuit current

withstand of a Three-Phase and separate Neutral accessories . 51

Table 1 – Size for connectable conductors . 18

Table 2 – Test values for flexing tests for copper conductors . 22

Table 3 – Test values for pull-out tests for copper conductors . 23

Table 4 – Test voltage for dielectric strength test of pilot contacts . 29

Table 5 – Dielectric withstand test voltage . 30
Table 6 – Test current and conductor cross-section for temperature rise. 32
Table 7 – Maximum surface temperatures . 32
Table 8 – Flexible cable types and dimensions, including conductor sizes and wire
type . 34
Table 9 – Cable secureness test values . 34
Table 10 – Screw sizes and torque test values . 37

– 4 – 62613-1  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
PLUGS, SOCKET-OUTLETS AND SHIP COUPLERS

FOR HIGH-VOLTAGE SHORE CONNECTION SYSTEMS

(HVSC-SYSTEMS) –
Part 1: General requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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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 62613-1 has been prepared by subcommittee 23H: Industrial plugs
and socket-outlets, of IEC technical committee 23: Electrical accessories.
The text of this standard is based on the following documents:
FDIS Report on voting
23H/254/FDIS 23H/259/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.

62613-1  IEC:2011 – 5 –
In this standard, the following print types are used:

– requirements proper: in roman type;

– test specifications: in italic type;

– notes: in smaller roman type.

A list of all the parts in the IEC 62613 series, under the general title Plugs, socket-outlets and

ship couplers for high-voltage shore connection systems (hvsc-systems), 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.
– 6 – 62613-1  IEC:2011
INTRODUCTION
International Standard IEC 62613-1 has been primarily written to address the needs of the

IEC/PAS 60092-510 High Voltage Shore Connection Systems, in terms of plugs, socket-

outlets, ship connectors and ship inlets, herein referred to as “accessories”, to deliver

electrical power to ships in ports. The purpose of the IEC/PAS 60092-510 is to define

requirements that allow compliant ships to connect to compliant high-voltage shore power

supplies through a compatible shore-to-ship connection.

Ships that do not require connecting with standardized high-voltage shore power supplies as

above may use accessories that are not covered by the standard sheets of IEC 62613-2 but

they may find it impossible to connect to these shore supplies.
Other low voltage plugs, socket-outlets, ship connectors and ship inlets used for the
connection of certain ship types to low-voltage shore power supplies may be found in the
IEC 60309 series.
International Standard IEC 62613 is divided into several parts:
Part 1: General requirements, comprising clauses of a general character.
Part 2: Dimensional compatibility and interchangeability requirements for accessories used for
ship-to-shore connections, comprising standard sheets for different types of accessories.
These ships are described in IEC/PAS 60092-510.

62613-1  IEC:2011 – 7 –
PLUGS, SOCKET-OUTLETS AND SHIP COUPLERS

FOR HIGH-VOLTAGE SHORE CONNECTION SYSTEMS

(HVSC-SYSTEMS) –
Part 1: General requirements
1 Scope
This part of IEC 62613 applies to accessories with
• three phases (3 poles and Earth) with up to three pilot contacts,
• one single pole (Neutral).
These accessories have rated currents not exceeding 500 A and rated operating voltages not
exceeding 12 kV 50/60 Hz.
NOTE 1 In the USA, the term "Ground" is used instead of "Earth".
These accessories are primarily intended for use outdoors, in a seawater environment, for the
shore supply of ships (ship-to-shore connection), in an ambient temperature within the range
of -25 °C to +45 °C.
NOTE 2 In some countries, other ambient temperatures may prevail and may need to be taken into account.
These accessories are not intended for use in hazardous areas. In such locations where
special conditions prevail, additional requirements may be necessary.
These accessories are intended to be connected to cables of copper or copper alloy only.
Socket-outlets or ship inlets incorporated in or fixed to electrical equipment are within the
scope of this standard.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.

IEC 60068-2-75, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60092 (all parts), Electrical installations in ships
IEC 60092-101:1994, Electrical installations in ships – Part 101: Definitions and general
requirements
IEC 60092-354, Electrical installations in ships – Part 354: Single- and three-core power
cables with extruded solid insulation for rated voltages 6 kV (Um = 7,2 kV) up to 30 kV (Um =
36 kV)
IEC 60112:2003, Method for the determination of the proof and the comparative tracking
indices of solid insulating materials

– 8 – 62613-1  IEC:2011
IEC 60228, Conductors of insulated cables

IEC 60269-1:2006, Low-voltage fuses – Part 1: General requirements

IEC 60269-2:2010, Low-voltage fuses – Part 2: Supplementary requirements for fuses for use

by authorized persons (fuses mainly for industrial application) – Examples of standardized

systems of fuses A to J
IEC 60502-4:2010, Power cables with extruded insulation and their accessories for rated

voltages from 1 kV (U = 1,2 kV) up to 30 kV (U = 36 kV) – Part 4: Test requirements on
m m
accessories for cables with rated voltages from 6 kV (U = 7,2 kV) up to 30 kV (U = 36 kV)
m m
IEC 60529, Degrees of protection provided by enclosures (IP code)
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60695-2-11, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-10-2, Fire hazard testing – Part 10-2 : Abnormal heat – Ball pressure test
IEC 62262, Degrees of protection provided by enclosures for electrical equipment against
external mechanical impacts (IK code)
IEC 62271-1, High voltage Switchgear and Controlgear – Part 1: Common specifications
IEEE 1580, Recommended Practice for Marine Cable for use on Shipboard and Fixed or
Floating Marine Platforms
ASTM B117-1985, Standard practice for operating salt spray (fog) apparatus
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE Where the terms “voltage” and “current” are used, they imply the a.c. r.m.s. values.
3.1
accessory
plugs, socket-outlets, ship connectors and ship inlets
NOTE The application of accessories is shown in Figure 1.
3.2
socket-outlet
the part intended to be installed with the fixed wiring or incorporated in equipment
NOTE A socket-outlet may also be incorporated in the output circuit of an isolating transformer.
3.3
plug
the part intended to be attached directly to one flexible cable

62613-1  IEC:2011 – 9 –
3.4
ship coupler
a means enabling the connection at will of a flexible cable to the ship. It consists of two parts,

a ship connector and ship inlet

3.5
ship connector
the part intended to be attached to one flexible cable connected to the supply

3.6
ship inlet
the part incorporated in, or fixed to, the ship
3.7
interlock
a device, either electrical and/or mechanical, which prevents the contacts of a plug from
becoming live before it is in proper engagement with a socket-outlet, and which either
prevents the plug or the ship connector from being withdrawn while its contacts are live or
makes the contacts dead and Earthed before separation
NOTE In the USA, the term "Grounded" is used instead of "Earthed".
3.8
retaining device
a mechanical arrangement which holds a plug or ship connector in position when it is in
proper engagement, and prevents its unintentional withdrawal
3.9
cap
a part separated or attached, which may be used to provide the degree of protection of a plug
or ship inlet when it is not engaged with a socket-outlet or ship connector
3.10
lid
a means to ensure the degree of protection on a socket-outlet or a ship connector
3.11
insulation voltage
the voltage assigned to the accessory by the manufacturer and to which dielectric tests,
clearances and creepage distances are referred
3.12
rated current
the current assigned to the accessory by the manufacturer
3.13
rated operating voltage
the nominal voltage of the supply for which the accessory is intended to be used
3.14
conditional short-circuit current
the prospective current that an accessory, protected by a specified short-circuit protective
device, can satisfactorily withstand for the total operating time of that device under specified
conditions of use and behaviour
NOTE This definition differs from definition 17-20 of IEC 60050-441 by broadening the concept of current-limiting
device into a short-circuit protective device, the function of which is not only to limit the current.

– 10 – 62613-1  IEC:2011
3.15
live
a conductor or circuit is live when a difference of potential exists between it and Earth

(IEC 60092-101:1994, definition 1.3.14)

3.16
clamping unit
the part of a terminal necessary for the clamping and the electrical connection of the
conductor
3.17
terminal
a conductive part provided for the connection of a conductor to an accessory
3.17.1
pillar terminal
pilot conductors a terminal in which the conductor is inserted into a hole or cavity, where it
〈 〉
is clamped under the shank of the screw or screws. The clamping pressure may be applied
directly by the shank of the screw or through an intermediate clamping member to which
pressure is applied by the shank of the screw (see Figure 7a)
3.17.2
screw terminal
〈 pilot conductors〉 a terminal in which the conductor is clamped under the head of the screw.
The clamping pressure may be applied directly by the head of the screw or through an
intermediate part, such as a washer, clamping plate or anti-spread device (see Figures 7b
and 7c)
3.17.3
stud terminal
〈pilot conductors〉 a terminal in which the conductor is clamped under a nut. The clamping
pressure may be applied directly by a suitably shaped nut or through an intermediate part,
such as a washer, clamping plate or anti-spread device (see Figure 7d)
3.17.4
saddle terminal
〈 pilot conductors〉 a terminal in which the conductor is clamped under a saddle by means of
two or more screws or nuts (see Figure 7e)
3.17.5
lug terminal
a screw terminal or a stud terminal, designed for clamping a cable lug or bar by means of a
screw or nut (see Figure 7f)
3.17.6
crimping terminal
a terminal in which the conductor is crimped by means of an adequate tool
3.17.7
soldering terminal
a terminal in which the conductor is soldered
3.17.8
mantle terminal
Earth conductor a terminal in which the conductor is clamped against the base of a slot in
〈 〉
a threaded stud by means of a nut. The conductor is clamped against the base of the slot by a

62613-1  IEC:2011 – 11 –
suitably shaped washer under the nut, by a central peg if the nut is a cap nut, or by equally

effective means for transmitting the pressure from the nut to the conductor within the slot (see

Figure 7g)
3.18
non-rewireable accessory
accessory so constructed that the cable or wiring cannot be separated from the accessory

without making it permanently useless

3.19
field-rewireable accessory
accessory so constructed that it can be rewired by skilled personnel as qualified by the
manufacturer
3.20
non field-rewireable accessory
accessory so constructed that it can only be rewired by the manufacturer’s authorised
personnel
3.21
user-serviceable accessory
accessory so constructed that parts can be replaced, using commonly available tools
3.22
non user-serviceable accessory
accessory so constructed that parts can only be replaced by the manufacturer’s authorised
personnel
3.23
(electrically) skilled person
person with technical training and knowledge to enable him or her to perform the assigned
task without creating a hazard
[IEC 60050-195, Amendment 1:2001, definition 04-01 modified]
3.24
(electrically) instructed person
person adequately advised or supervised by electrically skilled persons to enable him or her
to perceive risks and to avoid hazards which electricity can create
[IEC 60050-195, Amendment 1:2001, definition 04-02]

4 General
4.1 General requirements
Accessories shall be supplied with all the necessary instructions from the manufacturer, e.g.
installation, assembling, wiring, commissioning, inspection, preventive maintenance,
replacement of consumable parts, etc., including the levels of ability of the personnel to
perform such operations.
Accessories shall be so designed and constructed that in normal use their performance is
reliable and without danger to the user or surroundings.
Accessories constructed in accordance with this standard shall be suitable for the
environment conditions in the space(s) where they are intended to operate. Accessories
located on ships shall comply with the applicable part(s) of IEC 60092.

– 12 – 62613-1  IEC:2011
Unless otherwise stated, the normal use environment in which the accessories complying with

this standard are normally used is pollution degree 3 according to IEC 60664-1.

Accessories shall comply with the applicable requirements of IEC 60502-4.

Accessories shall be wired, installed, commissioned, maintained and used by electrically

instructed or skilled personnel.

HVSC-systems do not allow in-line connections unless a specific piece of equipement made

for that purpose is used. It shall not be possible to connect a plug into a ship connector

(see 8.4).
4.2 General notes on tests
4.2.1 Tests according to this standard are type tests. If a part of an accessory has previously
passed tests for a given degree of severity, the relevant type tests shall not be repeated if the
severity is not greater.
4.2.2 Unless otherwise specified, the samples are tested as delivered and under normal
conditions of use, at an ambient temperature of (20 ± 5) °C; the tests are made at rated
frequency.
4.2.3 Unless otherwise specified, the tests are carried out in the order of the clauses of this
standard.
4.2.4 Three samples are subjected to all the tests. For the tests of Subclause 11.1.4, for the
tests of Subclause 19.6 and 19.7, and for the tests of Clause 27, one new set of three
samples can be used, if necessary.
4.2.5 Accessories are deemed to comply with this standard if no sample fails in the complete
series of appropriate tests. If one sample fails in a test, that test and those preceding which
may have influenced the test result are repeated on another set of three samples, all of which
shall then pass the repeated tests.
NOTE In general, it will only be necessary to repeat the test that caused the failure, unless the sample fails in one
of the tests of Clause 21 in which case the tests are repeated from that of Clause 20 onwards.
The applicant may submit, together with the first set of samples, the additional set, which may be wanted should
one sample fail. The testing station will then, without further request, test the additional samples and will reject
only if a further failure occurs. If the additional set of samples is not submitted at the same time, the failure of one
sample will entail a rejection.
4.2.6 When the tests are carried out with conductors, unless otherwise specified, they shall

be copper and comply with IEC 60228 flexible (class 5). Accessories according to this
standard are intended to be connected to cables with plain or metal coated copper
conductors.
5 Standard ratings
Maximum voltages and currents for accessories standard ratings are
– 7,2 kV, 350 A,
– 12 kV, 350 A,
– 12 kV, 500 A,
– single-pole, 7,2 kV, 250 A,
– pilot contacts: 10 A 250 V a.c. / 1 A 300 V d.c. or
10 A 50 V a.c. / 1 A 120 V d.c.

62613-1  IEC:2011 – 13 –
6 Classification
6.1 Accessories are classified according to their purpose:

– plugs,
– socket-outlets,
– ship connectors,
– ship inlets.
6.2 Accessories are classified according to their rewirability:

– non rewirable accessories,
– field-rewirable accessories,
– non field-rewirable accessories.
6.3 Accessories are classified according to their serviceability:
– user-serviceable accessories,
– non user-serviceable accessories.
6.4 Accessories are classified according to their conditional short-circuit current withstand
capacity:
– accessories with a short-circuit withstand current of 16 kA r.m.s./1 s,
– accessories with a short-circuit withstand current of 25 kA r.m.s./1 s.
7 Marking
7.1 Accessories shall be marked with
– rated current, in amperes;
– rated operating voltage, in kilovolts;
– rated short-time withstand current ( I );
k/s
– rated short-circuit current peak withstand capacity;
– range of conductor sizes accepted by terminals;
– the IP rating according to IEC 60529 (IP66H or IP66/IP67H);
– either the name or trademark of the manufacturer or of the responsible vendor;

– type reference, which may be a catalogue number;
– DO NOT DISCONNECT WHILE ENERGIZED.
NOTE Optionally, the insulation voltage may be marked.
The nameplates shall be legible during normal service.
Compliance is checked by inspection.

– 14 – 62613-1  IEC:2011
7.2 When symbols are used, they shall be as follows:

A . amperes

kV . kilovolts

Hz . hertz

........................................... alternating current

..................................... ….. Earth

IP66H or IP66/IP67H . degree of protection according to IEC 60529
NOTE Marking of degree of protection on accessories is only valid when in engagement with a complementary
accessory or with an attached cap, if any.
Compliance is checked by inspection.
7.3 For socket-outlets and ship inlets, the marking for rated current, nature of supply, if
necessary, and either the name or trademark of the manufacturer or the responsible vendor
shall be on the main part, on the outside of the enclosure, or on the lid, if any, if the latter
cannot be removed without the aid of a tool.
Except for flush-type socket-outlets and ship inlets, these markings shall be easily discernible
when the accessory is mounted and wired as in normal use, if necessary after it has been
removed from the enclosure. The marking, if any, for the insulation voltage shall be on the
main part; it shall not be visible when the accessory is mounted and wired as in normal use.
The marking for rated operating voltage, type reference, the symbol for degree of protection
shall be on a place which is visible after installation of the accessory, on the outside of
enclosure or on the lid, if any, if the latter cannot be removed without the aid of a tool.
With the exception of the type reference, these markings shall be easily discernible when the
accessory is mounted and wired as in normal use.
Compliance is checked by inspection.
NOTE The term "main part" of a socket-outlet or a ship inlet means the part carrying the contacts. The type
reference may be marked on the main part.
The marking for rated current, nature of supply, rated operating voltage and the name or
trademark of the manufacturer or the responsible vendor, may be repeated on the lid, if any.

7.4 For plugs and ship connectors, the marking specified in 7.1, with the exception of the
marking for insulation voltage, if any, shall be easily discernible when the accessory is wired
ready for use.
The marking for insulation voltage, if any, shall be on the main part; it shall not be visible
when the accessory is mounted and wired as in normal use.
NOTE 1 The term "ready for use" does not imply that the plug or ship connector is in engagement with its
complementary accessory.
NOTE 2 The term "main part" of a plug or a ship connector means the part carrying the contacts.
Compliance is checked by inspection.

62613-1  IEC:2011 – 15 –
7.5 For rewirable accessories, the contacts shall be indicated by the symbols

– L1, L2, L3, or 1, 2, 3 for the three-Phase accessories,

– N for neutral (for single-pole Neutral accessories),

–  for Earth,
– P1, P2 and P3 for the pilot contacts, if any.

These symbols shall be placed close to the relevant terminals; they shall not be placed on

screws, removable washers or other removable parts.

NOTE 1 The figures used with the letters may be written as an index.
NOTE 2 In the USA, the term Ground is used instead or Earth.
Compliance is checked by inspection.
7.6 Marking shall be indelible and easily legible.
Compliance is checked by inspection and by the following test:
After the humidity treatment of Subclause 18.4, the marking is rubbed by hand for 15 s with a
piece of cloth soaked in water and again for 15 s with a piece of cloth soaked in petroleum
spirit.
NOTE 1 It is recommended that the petroleum spirit used consists of a solvent hexane with an aromatic content of
maximum 0,1 volume percentage, a kauributanol value of approximately 29, and an initial boiling point of
approximately 65 ºC, a dry point of approximately 69 ºC and a density of approximately 0,68 g/ cm .
Special attention is paid to the marking of the name or trademark of the manufacturer or the
responsible vendor and to that of the nature of supply, if any.
NOTE 2 A special test for checking the indelibility of these markings and the combination of pressure sensitive
label and the surface on which it is applied is under consideration.
7.7 For terminals, the connection and disconnection procedures shall be indicated on the
product, on the smallest package unit or on the manufacturer’s documentation.
8 Dimensions
8.1 Accessories shall comply with the appropriate standard sheets, if any. When standard
sheets do not exist, accessories shall comply with manufacturer’s specifications.

8.2 It shall not be possible to engage plugs or ship connectors with socket-outlets or ship
inlets having different voltage or current ratings, or having contact combinations allowing
improper connection.
In addition, the design shall be such that improper connections shall not be possible between
the Earth and/or pilot plug contact and a live socket-outlet contact, or a live plug contact and
the Earth and/or pilot socket-outlet contact.
Compliance is checked by inspection.

– 16 – 62613-1  IEC:2011
8.3 It shall not be possible to make single-pole connections between multi-pole plugs and

socket-outlets or ship connectors, or between ship inlets and ship connectors. It shall not be

possible to make single-pole connections between single-pole and multi-pole accessories.

Improper connections include single-pole connections and other connections which do not

comply with the requirements for protection against electric shock.

Compliance is checked by inspection.

8.4 It shall not be possible to engage plugs into ship connectors, as in-line cable connections

(cable couplers) are not allowed by the application.

Compliance is checked by inspection and test.
9 Protection against electric shock
9.1 Accessories shall be so designed that live parts of socket-outlets and ship connectors,
when they are wired as in normal use, and live parts of plugs and ship inlets, when they are in
partial or complete engagement with the complementary accessories, are not accessible
(IP2X according to IEC 60529).
Pilot contacts may be accessible if used at an extra low voltage.
NOTE The neutral contact and pilot contacts of socket-outlets and ship connectors are deemed to be live parts.
Pilot contacts are deemed not to be live parts if used at extra low voltage.
In addition, it shall not be possible to make contact between a contact of a plug or ship inlet
and a contact of a socket-outlet or ship connector while any contact is accessible.
Compliance is checked by inspection and, if necessary, by a test on the sample wired as in
normal use.
The standard test finger shown in Figure 2 is applied in every possible position, an electrical
indicator, with a voltage not less than 40 V, being used to show contact with the relevant part.
9.2 Accessories shall be so designed that
– when inserting the three-Phase plug or ship connector
• the Earth contact shall make before the Phase contacts,
• the pilot contact shall make after the Phase contacts.

– when withdrawing the three-Phase plug or ship connector
• the pilot contact shall break before the Phase contacts,
• the Phase contacts shall break before the Earth contact.
10 Provision for Earthing
10.1 Accessories shall be provided with an earthing terminal and contact.
Earthing contacts shall be directly and reliably connected to the earthing terminals.
Compliance is checked by inspection.
NOTE Single-pole Neutral accessories do not have an Earth contact.

62613-1  IEC:2011 – 17 –
10.2 Accessible metal parts of 3P+E accessories with Earthing contact, which may become

live in the event of an insulation fault, shall be reliably connected to the internal Earthing

terminal(s) by construction.
NOTE 1 For the purpose of this requirement, screws for fixing bases, covers and the like are not deemed to be

accessible parts which may become live in the event of an insulation fault.

If accessible metal parts are screened from live parts by metal parts which are connected to an Earthing terminal

or Earthing contact, or if they are separated from live parts by double insulation or reinforced insulation, they are

not, for the purpose of this requirement, regarded as likely to become live in the event of an insulation fault.

Compliance is checked by inspection and by the following test:

A current of 25 A derived from an a.c. source having a no-load voltage not exceeding 12 V is
passed between the Earthing terminal and each of the accessible metal parts in turn.
The voltage drop between the Earthing terminal and the accessible metal part is measured,
and the resistance calculated from the current and this voltage drop.
In no case shall the resistance exceed 0,05 Ω.
NOTE 2 Care should be taken that the contact resistance between the tip of the measuring probe and the metal
part under test does not influence the test results.
10.3 Earthing contacts shall be capable of carrying a current not less than the capacity of the
Earthing conductor of the cable without overheating.
Compliance is checked by the test of Clause 21.
10.4 Earthing contacts shall be shrouded or guarded by the housing of the accessory so that
they are protected against accidental mechanical damage.
Compliance is checked by inspection.
NOTE This requirement precludes the use of side Earthing contacts.

– 18 – 62613-1  IEC:2011
Table 1 – Size for connectable conductors

Rating of the
a
Internal connection
accessory
External Earthing
connection, if any
Highest Flexible conductors
Flexible cables for plugs
voltage for Current for socket-outlets and ship
and ship connectors
equipment inlets
A
2 a b 2 a b 2 b
mm AWG/MCM mm AWG/MCM mm AWG
kV
Pilot contact: Pilot contact: Pilot contact: Pilot contact:

1,5 16 1,5 16
7,2 (1P) 250 70 to 95 3/0 to 4/0 70 to 95 3/0 to 4/0 25 4
7,2 (3P+E) 350 120 to 185 250 to 350 120 to 185 250 to 350 25 4
12 (3P+E) 350 120 to 185 250 to 350 120 to 185 250 to 350 25 4
12 (3P+E) 500 185 to 240 350 to 500 185 to 240 350 to 500 25 4
a
Classification of conductors: according to IEC 60228 class 5 (flexible).
b
The nominal cross-sectional areas of conductors are give
...