IEC 60884-2-4:2007

Plugs and socket-outlets for household and similar purposes - Part 2-4: Particular requirements for plugs and socket-outlets for SELV

This Part 2-4 of IEC 60884 applies to plugs, fixed or portable socket-outlets, and to socket-outlets for appliances from 6 V up to and including 48 V d.c. or a.c. (50/60 Hz) SELV with rated current of 16 A, intended for household and similar purposes, either indoors or outdoors. The main changes from the previous edition concern the following clauses: Clause 7 - Classification: Clause 8 - Marking Clause 9 - Checking of dimensions Clause 13 - Construction of fixed socket-outlets Clause 14 - Construction of plugs and portable socket-outlets new figures for gauges for the verification of maximum and minimum withdrawal force. Annexes:-deletion of informative Annex AA and inclusion of the relevant information in normative Annex B. Please consult the preview for more details.

Prises de courant pour usages domestiques et analogues - Partie 2-4: Règles particulières pour prises de courant pour TBTS

La présente Partie 2-4 de la CEI 60884 s'applique aux fiches, aux socles fixes ou mobiles et aux socles pour appareils pour TBTS de 6 V à 48 V inclus pour courant continu ou alternatif (50/60 Hz) avec un courant assigné de 16 A, destinés aux usages domestiques et analogues, à l'intérieur ou à l'extérieur des bâtiments. Les changements par rapport à l'édition précédente concernent les articles suivants: Article 7 - Classification. Article 8 - Marques et indications Article 9 - Vérification des dimensions Article 13 - Construction des socles fixes Article 14 - Construction des fiches et socles mobiles Article 16 - Résistance au vieillissement, protection procurée par les enveloppes et résistance à l'humidité Article 21 - Fonctionnement normal Figures: -suppression de l'Annexe informative AA et inclusion des informations dans l'Annexe B normative. Veuillez consulter la pre-view pour plus de détails

General Information

• Status: Published
• Publication Date: 20-Nov-2007
• ICS: 29.120.30 - Plugs, socket-outlets, couplers
• Technical Committee: SC 23B - Plugs, socket-outlets and switches
• Current Stage: PPUB - Publication issued
• Start Date: 21-Nov-2007
• Completion Date: 26-Oct-2025

Relations

• Revises: IEC 60884-2-4:1999 - Plugs and socket-outlets for household and similar purposes - Part 2-4: Particular requirements for plugs and socket-outlets for SELV
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60884-2-4
Edition 3.0 2007-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plugs and socket-outlets for household and similar purposes –
Part 2-4: Particular requirements for plugs and socket-outlets for SELV

Prises de courant pour usages domestiques et analogues –
Partie 2-4: Règles particulières pour prises de courant pour TBTS

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IEC 60884-2-4
Edition 3.0 2007-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plugs and socket-outlets for household and similar purposes –
Part 2-4: Particular requirements for plugs and socket-outlets for SELV

Prises de courant pour usages domestiques et analogues –
Partie 2-4: Règles particulières pour prises de courant pour TBTS

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 29.120.30 ISBN 2-8318-9359-3

– 2 – 60884-2-4 © IEC:2007
CONTENTS
FOREWORD.4

1 Scope.7
2 Normative references.7
3 Definitions .8
4 General requirements .8
5 General remarks on tests.8
6 Ratings.8
7 Classification .9
8 Marking .9
9 Checking of dimensions .10
10 Protection against electric shock.10
11 Provision for earthing.11
12 Terminals and terminations.11
13 Construction of fixed socket-outlets .12
14 Construction of plugs and portable socket-outlets.12
15 Interlocked socket-outlets .13
16 Resistance to ageing, protection provided by the enclosures, and resistance to
humidity.13
17 Insulation resistance and electric strength.13
18 Operation of earthing contacts .13
19 Temperature rise .13
20 Breaking capacity .13
21 Normal operation .14
22 Force necessary to withdraw the plug.15
23 Flexible cables and their connection.16
24 Mechanical strength.17
25 Resistance to heat .17
26 Screws, current-carrying parts and connections .18
27 Creepage distances, clearances and distances through sealing compound.18
28 Resistance of insulating material to abnormal heat, to fire and to tracking .19
29 Resistance to rusting .20
30 Additional tests on pins provided with insulating sleeves.20

Annex A (normative) Safety-related routine tests for factory-wired portable accessories
(protection against electric shock and correct polarity).23
Annex B (normative) Survey of specimens needed for tests .24

Figure 101 – Gauge for the verification of the maximum withdrawal force .21
Figure 102 – Gauge for the verification of the minimum withdrawal force .22

60884-2-4 © IEC:2007 – 3 –
Table 1 – Ratings.9
Table 3 – Relationship between rated current and connectable nominal cross-sectional
areas of copper conductors .11
Table 11 – Nominal cross-sectional areas of rigid copper conductors for the deflection
test of screwless terminals .
Table 16 – Maximum and minimum withdrawal forces.16
Table 17 – External dimensions of flexible cables to be accommodated by cord
anchorages .16
Table 18 – Torque test values for cord anchorages.16
Table 19 – Maximum dimensions of flexible cables to be accommodated in rewirable
accessories.17
Table 20 – Relationship between rating of accessories, nominal cross-sectional areas of
test conductors and test currents for the tests of temperature rise (Clause 19) and
normal operation (Clause 21) .17
Table 23 – Creepage distances and clearances.19
Table A.1 – Diagrammatic representation of routine tests to be applied to factory-wired
portable accessories .23
Table B.101 – Number of specimens required for the tests .24

– 4 – 60884-2-4 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PLUGS AND SOCKET-OUTLETS FOR HOUSEHOLD
AND SIMILAR PURPOSES –
Part 2-4: Particular requirements for plugs and socket-outlets for SELV

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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 60884-2-4 has been prepared by subcommittee 23B: Plugs, socket-
outlets and switches, of IEC technical committee 23: Electrical accessories.
This third edition cancels and replaces the second edition published in 1999. It constitutes a
technical revision. The main changes from the previous edition are as follows:
Clause 7 – Classification:
– deletion of classification according to the degree of protection against harmful ingress of
water;
– inapplicability of 7.1.3 of Part 1 concerning classification according to the provision for
earthing:
– inapplicability of 7.2.2 of Part 1 concerning classification according to the existence of
shutters.
60884-2-4 © IEC:2007 – 5 –
Clause 8 – Marking:
– modification of the symbol for degree of protection to IPXX (Subclause 8.2).
Clause 9 – Checking of dimensions:
– addition of compliance paragraph in 9.1.
Clause 13 – Construction of fixed socket-outlets:
– applicability of 13.14 of Part 1;
– addition of requirement about multiple socket-outlets (Subclause 13.101).
Clause 14 – Construction of plugs and portable socket-outlets:
– modification of compliance paragraph of 14.23;
– addition of requirement about minimum nominal cross-sectional area of cables for cord
extension sets (Subclause 14.101).
Clause 16 – Resistance to ageing, protection provided by the enclosures, and resistance to
humidity:
– applicability of the whole Clause of Part 1.
Clause 21 – Normal operation:
– addition of maximum specified dimensions, including tolerance, of the test plug.
Figures:
– new figures for gauges for the verification of maximum and minimum withdrawal force.
Annexes:
– deletion of informative Annex AA and inclusion of the relevant information in normative
Annex B.
The text of this standard is based on the following documents:
CDV Report on voting
23B/836/CDV 23B/858/RVC
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.
This Part 2-4 is intended to be used in conjunction with IEC 60884-1 and IEC 60906-3. It was
established on the basis of the third edition of IEC 60884-1 (2002) and of its Amendment 1
(2006).
This Part 2-4 supplements or modifies the corresponding clauses in IEC 60884-1, so as to
convert that publication into the IEC standard: Particular requirements for plugs and socket-
outlets for SELV.
When a particular subclause of Part 1 is mentioned in this Part 2-4, that subclause applies as
far as reasonable. Where this standard states “addition”, “modification” or “replacement”, the
relevant text of Part 1 is to be adapted accordingly.

– 6 – 60884-2-4 © IEC:2007
In this standard the following print types are used:
– requirements proper: in roman type;
– test specification: in italic type;
– explanatory notes: in small roman type.
Subclauses or figures which are additional to those in Part 1 are numbered starting from 101;
supplementary annexes are entitled AA, BB, etc.
When clauses of Part 1 are declared as applicable, they apply only where they contain
requirements concerning plugs and socket-outlets for SELV.
A list of all parts of the IEC 60884 series, under the general title: Plugs and socket-outlets for
household and similar purposes, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result 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.
60884-2-4 © IEC:2007 – 7 –
PLUGS AND SOCKET-OUTLETS FOR HOUSEHOLD
AND SIMILAR PURPOSES –
Part 2-4: Particular requirements for plugs and socket-outlets for SELV

1 Scope
Replacement:
This Part 2-4 of IEC 60884 applies to plugs, fixed or portable socket-outlets, and to socket-
outlets for appliances from 6 V up to and including 48 V d.c. or a.c. (50/60 Hz) SELV with rated
current of 16 A, intended for household and similar purposes, either indoors or outdoors.
NOTE 1 The extension of this standard to higher frequencies is under consideration.
This standard does not cover requirements for flush mounting boxes; it covers only those
requirements for surface-type mounting boxes which are necessary for the tests on the socket-
outlet.
This standard also applies to plugs and socket-outlets incorporated in cord extension sets or
integrated in or incorporated in appliances or intended to be fixed to them.
NOTE 2 A socket-outlet integrated in an appliance or equipment is a socket-outlet which is formed by the housing
of the appliance or equipment.
A socket-outlet incorporated in an appliance or equipment is a separate socket-outlet built in or fixed to an
appliance or equipment.
In addition, socket-outlets for appliances or equipment must comply with IEC 60884-2-2.
This standard does not apply to
– plugs, socket-outlets and couplers for industrial purposes;
– appliance couplers;
– fixed socket-outlets combined with fuses, automatic switches, etc.
Plugs and fixed or portable socket-outlets complying with this standard are suitable for use at
ambient temperatures not normally exceeding 25 °C, but occasionally reaching 35 °C.
NOTE 3 Socket-outlets complying with this standard are only suitable for incorporation in equipment in such a way
and in such a place that it is unlikely that the surrounding temperature exceeds 35 °C.
In locations where special conditions prevail, such as in ships, vehicles and the like, and in
hazardous locations, for example where explosions are liable to occur, special constructions
may be required.
2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
IEC 60884-2-2, Plugs and socket-outlets for household and similar purposes – Part 2:
Particular requirements for socket-outlets for appliances

– 8 – 60884-2-4 © IEC:2007
IEC 60906-3:1994, IEC system of plugs and socket-outlets for household and similar purposes –
Part 3: SELV plugs and socket-outlets, 16 A 6 V, 12 V, 24 V, 48 V, a.c. and d.c.
ISO 1302:2002, Geometrical Product Specifications (GPS) – Indication of surface texture in
technical product documentation
3 Definitions
This clause of Part 1 is applicable, except as follows:
Addition:
3.101
SELV
voltage which does not exceed 50 V a.c. r.m.s. or 120 V d.c. (ripple free) between conductors,
or between any conductor and earth, in a circuit which is isolated from the supply mains by
means such as a safety isolating transformer or converter with separate windings
NOTE The rated voltages of the systems considered by this standard do not exceed 48 V a.c. and 48 V d.c.
4 General requirements
This clause of Part 1 is applicable.
5 General remarks on tests
This clause of Part 1 is applicable, except as follows:
5.4 Addition after the first paragraph:
When a manufacturer's design is used for d.c., as well as for a.c., three additional specimens
are required for the tests of Clauses 19, 20 and 21.
When a manufacturer's design is used for two or more voltages, three additional specimens
are required for each additional voltage.
All relevant tests are carried out with the specimens having the highest rated voltage(s).
In addition, compliance with the dimensions of standard sheets 1 to 6 of IEC 60906-3 is
checked on one specimen of each type.
NOTE A table showing the specimens required for the tests is given in Annex B.
6 Ratings
This clause of Part 1 is applicable, except as follows:
6.1 Replacement:
Accessories shall be of the type and have voltage and current rating as shown in Table 1.

60884-2-4 © IEC:2007 – 9 –
Table 1 – Ratings
Type Rated voltage Rated current
V A
a
2P (rewirable or non-rewirable) AC 6 , 12, 24, 48 16
a
DC 6 , 12, 24, 48
a
Non-preferred values.
6.2 This subclause of Part 1 is not applicable.
7 Classification
This clause of Part 1 is applicable, except as follows:
7.1.3 This subclause is not applicable.
7.2.1 This subclause is not applicable.
7.2.2 This subclause is not applicable.
7.2.5 This subclause is not applicable.
7.3 Replacement:
Plugs are classified according to the class of equipment to which they are intended to be
connected:
– plugs for equipment of class III.
NOTE For the description of the classes of equipment, see IEC 61140.
8 Marking
This clause of Part 1 is applicable except as follows:
8.1 Addition:
In addition, the terminals of d.c. accessories shall be marked with symbols.
8.2 Replacement:
When symbols are used, they shall be as follows:
Amperes. A
Volts. V
Alternating current. ~
Direct current .
Positive pole. +
Negative pole. –

– 10 – 60884-2-4 © IEC:2007
Degree of protection, when relevant . IPXX
NOTE 1 Details of construction of symbols are given in IEC 60417 (IEC 60417, Graphical symbols for use on
equipment).
NOTE 2 In the IP code, the letter "X" is replaced by the relevant number.
NOTE 3 Lines formed by the construction of the tool are not considered as part of the marking.
For the marking of rated current and rated voltage, the figures may be used alone. These
figures may be placed on one line separated by an oblique line or the figure for rated current
may be placed above the figure for rated voltage, separated by a horizontal line.
The marking for the nature of supply shall be placed next to the marking for rated current and
rated voltage.
NOTE 4 The marking for current, voltage and nature of supply may be, for instance, as follows:
16 A 48 V ~ or 16/48 ~ or
~
16 A 12 V or 16/12 or
8.4 Deletion of the second paragraph.
8.5 Replacement:
Terminals for d.c. accessories shall be indicated by the symbols + and –.
These markings shall not be placed on screws, or any other easily removable parts.
NOTE 1 "Easily removable parts" are those parts which can be removed during the normal installation of the
socket-outlet or the assembly of the plug.
NOTE 2 Terminations in non-rewirable accessories need not be marked.
9 Checking of dimensions
This clause of Part 1 is applicable, except as follows:
9.1 Replacement:
Accessories shall comply with the relevant standard sheets 1 to 6 of IEC 60906-3, as
applicable.
Compliance is checked by inspection.
9.2 Replacement of all the paragraphs before the compliance by:
It shall not be possible for
– d.c. plugs to enter a.c. socket-outlets, nor a.c. plugs to enter d.c. socket-outlets;
– plugs to enter socket-outlets of any other plug and socket-outlet system;
– plugs to be able to enter socket-outlets of other voltage ratings.
10 Protection against electric shock
This clause of Part 1 is applicable, except as follows:

60884-2-4 © IEC:2007 – 11 –
10.2 Replacement of words "given in 10.2.1 or 10.2.2 are fulfilled" by "given in 10.2.1 are
fulfilled."
10.2.2 This subclause is not applicable.
10.3 This subclause is not applicable.
10.4 This subclause is not applicable.
10.5 This subclause is not applicable.
10.6 This subclause is not applicable.
10.7 This subclause is not applicable.
11 Provision for earthing
This clause of Part 1 is not applicable.
12 Terminals and terminations
This clause of Part 1 is applicable, except as follows:
12.2.1 Replacement of Table 3 by the following new table:
Table 3 – Relationship between rated current and connectable nominal
cross-sectional areas of copper conductors
Current and type of Rigid (solid or stranded) Flexible copper conductors
the accessory copper conductors
Nominal cross- Diameter of the Nominal cross- Diameter of the

sectional area largest conductor sectional area largest conductor
2 2
mm mm mm mm
16 A 2P From 1,5 up 2,13 From 1,5 up 2,21
(fixed accessory) to 2 × 2,5 to 2 × 2,5 inclusive
inclusive
16 A 2P – – From 0,75 up 1,73
(portable accessory) to 1,5 inclusive

12.2.10 This subclause is not applicable.
12.3.12 Replacement of Table 11 by the following new table:
Table 11 – Nominal cross-sectional areas of rigid copper conductors for
the deflection test of screwless terminals
Rated current of the socket-outlet Nominal cross-sectional area of the test conductor
A mm
First test sequence Second test sequence
16 1,5 2,5
– 12 – 60884-2-4 © IEC:2007
13 Construction of fixed socket-outlets
This clause of Part 1 is applicable, except as follows:
13.7.2 Replacement of the last item of the third dashed text by:
• live parts of SELV circuits not greater than 25 V a.c. or 60 V d.c.
13.8 This subclause is not applicable.
13.17 This subclause is not applicable.
13.18 This subclause is not applicable.
13.19 This subclause is not applicable.
Addition:
13.101 Multiple socket-outlets shall consist only of SELV socket-outlets.
Compliance is checked by inspection.
14 Construction of plugs and portable socket-outlets
This clause of Part 1 is applicable, except as follows:
14.3 Deletion of the second paragraph.
14.4 This subclause is not applicable.
14.7 Deletion of the last dashed text.
14.8 This subclause is not applicable.
14.9 This subclause is not applicable.
14.10.1 Deletion of the fourth paragraph.
14.10.2 Deletion of the fourth paragraph.
14.11 Deletion of the last dashed text.
14.15 Deletion of the note.
14.21 This subclause is not applicable.
14.23 Deletion of the second paragraph.
Replacement of the last paragraph by:
Compliance is checked by the tests of 14.23.1 and 14.23.2.
Deletion of Note 2.
60884-2-4 © IEC:2007 – 13 –
Addition:
14.101 For cord extension sets, the minimum nominal cross-sectional area of cables is
– 1,0 mm up to and including 2 m length;
– 1,5 mm over 2 m length.
15 Interlocked socket-outlets
This clause of Part 1 is not applicable.
16 Resistance to ageing, protection provided by the enclosures, and resistance
to humidity
This clause of Part 1 is applicable.
17 Insulation resistance and electric strength
This clause of Part 1 is applicable, except as follows:
17.1.1 Deletion of item d) and of the last five words of the second paragraph, i.e. “earthing
terminals or earthing contacts”.
17.1.2 Deletion of item c), and in the last paragraph, the words “earthing terminals”
and “earthing contacts”.
17.2 Replacement of the second paragraph by:
The test voltage shall be 500 V.
18 Operation of earthing contacts
This clause of Part 1 is not applicable.
19 Temperature rise
This clause of Part 1 is applicable, except as follows:
Deletion of the fourth paragraph from the end of the testing specification (starting with “For
accessories having three poles”).
20 Breaking capacity
This clause of Part 1 is applicable, except as follows:
Deletion of Notes 2 and 3.
Replacement of the text, from the sixth paragraph of the testing specification to the end
inclusive, by the following:
The length of the stroke of the test apparatus is between 50 mm and 60 mm.

– 14 – 60884-2-4 © IEC:2007
The plug is inserted and withdrawn from the socket-outlet 50 times (100 strokes) at a rate of
– 30 strokes per minute.
NOTE A stroke is an insertion or withdrawal of the plug.
The test voltage is 53 V and the test current 20 A.
The periods during which the test current is passed from the insertion of the plug until the
+ 0,5
subsequent withdrawal is (1,5 ) s.
Accessories for a.c. are tested using an alternating current (cos ϕ = 0,6 ± 0,05).
Accessories for d.c. are tested in a substantially non-inductive circuit.
The test is made with the connections shown in Figure 17.
With regard to a.c., test resistors and inductors are not connected in parallel, except that, if an
air-core inductor is used, a resistor taking approximately 1 % of the current through the
inductor is connected in parallel with it. Iron-core inductors may be used, provided the current
has a substantially sine-wave form.
Accessible metal parts, metal supports, and any metal frame supporting the base of flush-type
socket-outlets are connected through the selector switch C to one of the poles of the supply for
half the number of strokes, and to the other pole for the remainder.
In the case of multiple socket-outlets, the test is carried out individually on each socket-outlet.
During the test, no sustained arcing shall occur.
After the test, the specimens shall show no damage impairing their further use and the entry
holes for the pins shall not show any damage which may impair the safety within the meaning
of this standard.
21 Normal operation
Replacement:
Accessories shall withstand the mechanical, electrical, and thermal stresses occurring in
normal use without undue wear or other harmful effect.
Compliance is checked by testing socket-outlets, and plugs with pins which are not solid, by
means of an appropriate test apparatus, an example of which is shown in Figure 16.
The test pins shall be replaced after 2 500 strokes.
Socket-outlets are tested using a test plug with brass pins having the maximum specified
dimensions, with a tolerance of mm, and spaced at the nominal distance with a tolerance
−0,06
+0,05
of mm.
NOTE 1 Plugs are tested using a fixed socket-outlet complying with this standard, and having as near to average
characteristics as possible.
NOTE 2 Care should be taken to see that the pins of the test plug are in good condition before the test is started.

60884-2-4 © IEC:2007 – 15 –
NOTE 3 The material of the brass pins of the test plug should be as specified in ISO 1639, designation
CuZn39Pb2-M. The microcomposition should be homogenous.
The plug is inserted into and withdrawn from the socket-outlet 5 000 times (10 000 strokes) at
a rate of
– 30 strokes per minute.
NOTE 4 A stroke is an insertion or a withdrawal of the plug.
The test voltage is 48 V, and the test currents are taken from Table 20.
Accessories for a.c. are tested using an alternating current (cos ϕ = 0,8 ± 0,05).
Accessories for d.c. are tested in a substantially non-inductive circuit. The test current is
passed during each engagement of the plug.
The periods during which the test current is passed from the insertion of the plug until the
+ 0,5
subsequent withdrawal is (1,5 ) s.
The test is made with the connections indicated in Clause 20, the selector switch C being
operated as prescribed in that clause.
During the test, no sustained arcing shall occur.
After the test, the specimens shall not show
– wear impairing their further use,
– deterioration of enclosures, insulating linings, or barriers,
– damage to the entry holes for the pins that might impair proper working,
– loosening of electrical or mechanical connections,
– seepage of sealing compound.
The specimens shall then comply with the requirements of Clause 19, the test current being,
however, equal to the test current required for the normal operation test and the temperature
rise, at any point, not exceeding 45 K, and they shall withstand an electric strength test made
according to 17.2.
The humidity treatment, as for 16.3, is not repeated before the electric strength test of this
clause.
The tests of 13.2 and 14.2 are made after the tests of this clause.
22 Force necessary to withdraw the plug
This clause of Part 1 is applicable, except as follows:
Deletion of the second and third paragraphs.
22.1.1 Replacement in the first paragraph of "Figure 18" by "Figure 101".
22.1.1 Replacement of the words "The test plug" by "The test plug as shown in Figure 101".
22.1.2 Replacement in the first paragraph of "Figure 19" by "Figure 102".

– 16 – 60884-2-4 © IEC:2007
22.2 Replacement in the first paragraph of "Figure 19" by "Figure 102".
Replacement of Table 16 by the following new table:
Table 16 – Maximum and minimum withdrawal forces
Rating Withdrawal forces
A N
Multi-pin gauge Single-pin gauge
(see Figure 101) (see Figure 102)
maximum minimum
16 50 2
23 Flexible cables and their connection
This clause of Part 1 is applicable, except as follows:
23.2 Deletion of the fourth paragraph.
Replacement of Table 17 by the following new table:
Table 17 – External dimensions of flexible cables to be accommodated
by cord anchorages
Rating Number of Type of flexible cable Number of conductors Limits for external
poles (cable reference) and nominal cross- dimensions for
sectional area flexible cables
mm
A  mm minimum maximum
16 2 60227 IEC 42
2 × 0,75 2,7 × 5,4 3,2 × 6,4
60227 IEC 53 7,4 9,0
2 × 1,5
Replacement of the fifth paragraph after the table by the following new paragraph:
The flexible cable is then subjected 100 times to a pull of 60 N.
Replacement of Table 18 by the following new table:
Table 18 – Torque test values for cord anchorages
Rating of plugs or
Flexible cable (number of cores × nominal cross-sectional area)
portable socket-outlets
A mm
2 × 0,5 2 × 0,75 2 × 1,5
0,1 Nm 0,15 Nm 0,25 Nm
60884-2-4 © IEC:2007 – 17 –
Replacement of Table 19 by the following new table:
Table 19 – Maximum dimensions of flexible cables to be accommodated
in rewirable accessories
Rating of Number of Types of flexible cable Number of conductors Maximum
accessory poles (cable references) and nominal cross- dimension for
sectional area flexible cables
A mm mm
16 2 60245 IEC 53 2 × 1,5 10,5

23.3 Replacement of Table 20 and the rest of the subclause by the following:
Table 20 – Relationship between rating of accessories, nominal cross-sectional areas of
test conductors and test currents for the tests of temperature rise (Clause 19) and
normal operation (Clause 21)
Rating Rewirable fixed Rewirable portable Non-rewirable portable Non-rewirable plugs
accessories accessories socket-outlets
A Test current Test current Nominal Test current Nominal Test current
cross- cross-
A A A A
sectional sectional
area area
Clause Clause Clause Clause Clause Clause Clause Clause
2 2
mm mm
19 21 19 21 19 21 19 21
a
Tinsel 1 1
a
0,5 2,5 2,5
b
16 22 16 20 16 1,5 16 16 0,75 10 10
1 12 12
b
1,5 16 16
a
Tinsel cords and flexible cables having a cross-sectional area of 0,5 mm are allowed in lengths up to 2 m
only.
b
This value may be reduced to 1 mm under the conditions of 14.101.

Compliance is checked by inspection, by measurement, and by checking that the flexible
cables are in accordance with IEC 60227 or IEC 60245, as applicable.
24 Mechanical strength
This clause of Part 1 is applicable, except as follows:
24.7 This subclause is not applicable.
24.8 This subclause is not applicable.
25 Resistance to heat
This clause of Part 1 is applicable, except as follows:
25.2 Replacement of the first paragraph by:
Parts of insulating material necessary to retain current-carrying parts in position, as well as
parts of the front surface zone of thermoplastic material, 2 mm wide, surrounding the pin entry

– 18 – 60884-2-4 © IEC:2007
holes of socket-outlets, shall be subjected to a ball-pressure test by means of the apparatus
shown in Figure 37.
25.3 Replacement:
Parts of insulating material not necessary to retain current-carrying parts are subjected to a
ball-pressure test in accordance with 25.2, but the test is made at a temperature of (70 ± 2) °C,
or (40 ± 2) °C plus the highest temperature rise determined for the relevant part during the test
of Clause 19, whichever is the higher.
26 Screws, current-carrying parts and connections
This clause of Part 1 is applicable, except as follows:
26.5 Replacement of the first paragraph by:
Current-carrying parts, including those of terminals, shall be of metal having, under the
conditions occurring in the accessory, mechanical strength, electrical conductivity and
resistance to corrosion adequate for their intended use.
27 Creepage distances, clearances and distances through sealing compound
This clause of Part 1 is applicable, except as follows:
27.1 Replacement of Table 23 by the following new table:

60884-2-4 © IEC:2007 – 19 –
Table 23 – Creepage distances and clearances
Description mm
Creepage distances:
1 Between live parts of different polarity 2
2 Between live parts and
– accessible insulating parts;
– metal frames supporting the base of flush-type socket-outlets;
– screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets;

– external assembly screws, other than screws which are on the engagement face
of plugs 2
3 Between pins of plugs and metal parts connected to them, when fully engaged, and a socket-
a
outlet of the same system having accessible metal parts , made according to the most
b 2
unfavourable construction
a
4 Between the accessible metal parts of a socket-outlet and a fully engaged plug of the same
systems having pins and metal parts connected to them, made according to the most unfavourable
b
construction
a
5 Between live parts of a socket-outlet (without a plug) and its accessible metal parts 2
Clearance:
6 Between live parts of different polarity 1,6
7 Between live parts and
– accessible insulating parts not mentioned under item 9;
– metal frames supporting the base of flush-type socket-outlets;
– screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets;

– external assembly screws, other than screws which are on the engagement face
of plugs 1,6
8 Between live parts and
– metal boxes, without insulating lining with the socket-outlet in the most unfavourable 2
position
9 Between live parts and the surfaces on which the base of a socket-outlet for surface mounting 2
is mounted
10  Between live parts and the bottom of any conductor recess, if any, in the base of a socket- 1,6
outlet for surface mounting
a
With exception of screws and the like.

b
The most unfavourable construction may be checked by means of a gauge which is based on the standard
sheets relevant to the system concerned.

28 Resistance of insulating material to abnormal heat, to fire and to tracking
This clause of Part 1 is applicable, except as follows:
28.1.1 Glow-wire test
Replacement of the dashed texts by:
– for parts made of insulating material, necessary to retain current-carrying parts and parts of
fixed accessories in position, by the test made at 850 °C;
– for parts of insulating material, necessary to retain current-carrying parts of portable
accessories in position, by the test made at a temperature of 750 °C;

– 20 – 60884-2-4 © IEC:2007
– for parts of insulating material, not necessary to retain current-carrying parts, even though
they are in contact with them, by the test made at a temperature of 650 °C.
28.1.2 This subclause is not applicable.
28.2 This subclause is not applicable.
29 Resistance to rusting
This clause of Part 1 is applicable.
30 Additional tests on pins provided with insulating sleeves
This clause of Part 1 is not applicable.

Replacement of Figures 18 and 19 by the following two figures:

60884-2-4 © IEC:2007 – 21 –
L = 2,1
-0,02
+0,02
0,01 B
1,9 11,4 ± 0,2
R0,6
-0,02
B
10,4 ± 0,1
16 min.
∅ 16,9
-0,02
∅ 0,02
A
Optional O-ring 15,1 × 1,6
R = ∅/2
Both pins
∅ 0,05 A
+0,02
∅ 15,9
∅ 0,02 A
∅ 19,1
-0,02
A
IEC  1651/99
Dimensions in millimetres
Figure 101 – Gauge for the verification of the maximum withdrawal force

+0,02
4,8
R = L/2
+0,05
0,3
2 × ∅ 3,5
-0,02
∅ 0,05 A
+0,02
R0,4
– 22 – 60884-2-4 © IEC:2007
∅ 8 ± 0,2
ISO 1302
+0,02
∅ 3,4
1,0
0,4
R
R1 ± 0,2
0,2 Mass (kg)
-2
IEC  1650/99
Dimensions in millimetres
Figure 102 – Gauge for the verification of the minimum withdrawal force
6,5 min.
9 ± 0,1
60884-2-4 © IEC:2007 – 23 –
Annex A
(normati
...