SIST EN 60320-2-2:2003

SLOVENSKI SIST EN 60320-2-2:2003

STANDARD
marec 2003
Appliance couplers for household and similar general purposes -- Part 2-2:
Interconnection couplers for household and similar equipment (IEC 60320-2-
2:1998)
ICS 29.120.30 Referenčna številka
SIST EN 60320-2-2:2003(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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NORME
CEI
INTERNATIONALE
IEC
60320-2-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1998-08
Connecteurs pour usages domestiques et usages
généraux analogues –
Partie 2-2:
Connecteurs d’interconnexion pour matériels
électriques domestiques et analogues
Appliance couplers for household and similar
general purposes –
Part 2-2:
Interconnection couplers for household
and similar equipment
 IEC 1998 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE W
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60320-2-2 © IEC:1998 – 3 –
CONTENTS
Page
FOREWORD . 5
INTRODUCTION . 9
Clause
1 Scope. 11
2 Normative references. 11
3 Definitions. 13
4 General requirements. 13
5 General notes on tests . 13
6 Standard ratings. 15
7 Classification. 15
8 Marking. 17
9 Dimensions and compatibility . 19
10 Protection against electric shock . 23
11 Provision for earthing . 25
12 Terminals and terminations . 25
13 Construction. 25
14 Moisture resistance. 29
15 Insulation resistance and electric strength . 29
16 Forces necessary to insert and to withdraw the connector. 31
17 Operation of contacts . 33
18 Resistance to heating of appliance couplers for hot conditions or very hot conditions 33
19 Breaking capacity. 33
20 Normal operation. 35
21 Temperature rise. 37
22 Cords and their connection. 37
23 Mechanical strength. 39
24 Resistance to heat and ageing . 41
25 Screws, current-carrying parts and connections . 41
26 Creepage distances, clearances and distances through insulation . 41
27 Resistance of insulating material to heat, fire and tracking. 43
28 Resistance to rusting. 43
29 Electromagnetic compatibility (EMC) requirements . 43
STANDARD SHEETS . 45

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60320-2-2 © IEC:1998 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
APPLIANCE COUPLERS FOR HOUSEHOLD
AND SIMILAR GENERAL PURPOSES –
Part 2-2: Interconnection couplers for household
and similar equipment
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60320-2-2 has been prepared by subcommittee 23G: Appliance
couplers, of IEC technical committee 23: Electrical accessories.
This second edition cancels and replaces the first edition published in 1990, amendment 1
(1994) and amendment 2 (1997), and constitutes a minor revision.
The text of this standard is based on the following documents:
FDIS Report on voting
23G/183/FDIS 23G/187/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 standard is intended to be used in conjunction with IEC 60320-1: Appliance couplers for
household and similar general purposes (1994).

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60320-2-2 © IEC:1998 – 7 –
The clauses of this standard supplement or modify the corresponding clauses of IEC 60320-1.
Where there is no corresponding subclause in this standard, the subclause of IEC 60320-1
applies without modification as far as is reasonable. Where this standard states "addition",
"modification" or "replacement", the relevant requirement, test specification or explanatory
matter in IEC 60320-1 should be adapted accordingly.
In this particular standard, subclauses, figures or tables which are additional to those in Part 1
are numbered starting from 101.

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60320-2-2 © IEC:1998 – 9 –
INTRODUCTION
Where in IEC 60320-1 the words "appliance coupler", "connector" or "appliance inlet" appear,
they should be deleted and replaced by "interconnection coupler", "plug connector" or
"appliance outlet" respectively.

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60320-2-2 © IEC:1998 – 11 –
APPLIANCE COUPLERS FOR HOUSEHOLD
AND SIMILAR GENERAL PURPOSES –
Part 2-2: Interconnection couplers for household
and similar equipment
1 Scope
This clause of IEC 60320-1 is replaced as follows:
This standard is applicable to two-pole interconnection couplers for a.c. only, with and without
earthing contact, with a rated voltage not exceeding 250 V and a rated current not exceeding
16 A, for household and similar appliances and equipment and intended for the interconnection
of the electrical supply to electrical appliances or equipment for 50 Hz or 60 Hz supply.
Appliance outlets integrated in or incorporated in appliances or other equipment are within the scope of this
standard. The dimensional and general requirements of this standard apply to such outlets, but certain tests may
not be relevant.
The requirements for plug connectors are based on the assumption that the temperature of
the socket contacts of the corresponding appliance outlets does not exceed 65 °C (cold
conditions).
Interconnection couplers complying with this standard are suitable for use at ambient
temperatures not normally exceeding 25 °C, but occasionally reaching 35 °C.
Interconnection couplers complying with the standard sheets in this standard are intended for
the interconnection of appliances or equipment having no special protection against moisture;
for the interconnection of other appliances or equipment and of an appliance or equipment
which is subject to spillage of liquid in normal use, additional requirements are necessary.
Special constructions may be required
– in locations where special conditions prevail as, for example, in ships, vehicles and the like;
– in hazardous locations, for example, where explosions are liable to occur.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 60320. At the time of publication, the editions indicated
were valid. All normative documents are subject to revision, and parties to agreements based
on this part of IEC 60320 are encouraged to investigate the possibility of applying the most
recent editions of the normative documents indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
IEC 60083:1997, Plugs and socket-outlets for domestic and similar general use standardized in
member countries of IEC
IEC 60320-1:1994, Appliance couplers for household and similar general purposes – Part 1:
General requirements

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60320-2-2 © IEC:1998 – 13 –
IEC 60536:1976, Classification of electrical and electronic equipment with regard to protection
against electric shock
IEC 60906 (all parts), IEC system of plugs and socket-outlets for household and similar
purposes
ISO 1101,— Geometrical Product Specifications (GPS) – Geometrical tolerancing –
1)
Generalities, definitions, symbols, indication on drawings
3 Definitions
This clause of IEC 60320-1 applies with the following additions:
Additional definitions:
3.101 An interconnection coupler is a means enabling the connection and disconnection at
will of an appliance or equipment to a cord leading to another appliance or equipment.
It consists of two parts:
–a plug connector, which is the part integral with, or intended to be attached to, the cord;
– an appliance outlet, which is the part integrated or incorporated in the appliance or
equipment or intended to be fixed to it, and from which the supply is obtained.
NOTE – An appliance outlet integrated in an appliance or equipment is an appliance outlet (the shroud and bottom
of) which is formed by the housing of the appliance or equipment. An appliance outlet incorporated in an appliance
or equipment is a separate appliance outlet built in or fixed to an appliance or equipment.
3.3 Replacement:
The term "accessory" is used as a general term covering plug connectors and/or appliance
outlets.
4 General requirements
This clause of IEC 60320-1 is replaced as follows.
Interconnection couplers shall be so designed and constructed that in normal use their
performance is reliable and without danger to the user or surroundings.
In general, compliance is checked by carrying out all the tests specified.
5 General notes on tests
This clause of IEC 60320-1 applies amended as follows:
___________
1)
 To be published.

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60320-2-2 © IEC:1998 – 15 –
5.4 Replacement:
Unless otherwise specified, plug connectors and appliance outlets are tested in conjunction
with an appropriate appliance outlet or plug connector complying with this standard.
5.5 Replacement:
For appliance outlets, six specimens are required, three of which are subjected to the tests
specified with the exception of those of clauses 14, 15, 16, 19, 20 and 21; the other three
specimens are subjected to the tests of clauses 14, 15, 16, 19, 20 and 21 (including the
repetition of the test of 16.2).
For plug connectors, nine specimens are required, three of which are subjected to the tests
specified with the exception of those of clauses 14, 15 and 17 and subclauses 22.4 and 24.2;
three other specimens are subjected to the tests of clauses 14, 15 and 17; the other three
specimens are subjected to the test of 22.4.
For plug connectors of rubber or similar material, two additional specimens are required which
are subjected to the test of 24.2.1.
For plug connectors of polyvinyl chloride (PVC) or similar material, two additional specimens
are subjected to the test of 24.2.3.
Accordingly, for plug connectors the total number of specimens is:
Plug connector made of Number of specimens
Rigid insulating material 9
PVC, rubber or similar 11
material
6 Standard ratings
This clause of IEC 60320-1 applies amended as follows:
6.2 Replacement:
Standard rated currents are 2,5 A, 10 A and 16 A as specified in 9.1 of this standard.
7 Classification
This clause of IEC 60320-1 applies amended as follows:
Replacement:
7.1 Interconnection couplers are classified according to the type of appliance or equipment to
be connected:
– interconnection couplers for class I equipment;
– interconnection couplers for class II equipment.
NOTE – For a description of the classes, see IEC 60536.

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60320-2-2 © IEC:1998 – 17 –
7.2 Plug connectors are, moreover, classified according to the method of connecting the
cord:
– rewirable plug connectors;
– non-rewirable plug connectors.
8 Marking
This clause of IEC 60320-1 applies amended as follows:
8.1 Replacement:
Plug connectors shall be marked with:
– rated current in amperes;
– rated voltage in volts;
– symbol for nature of supply;
– name, trade mark or identification mark of the manufacturer or of the responsible vendor;
– type reference.
NOTE – The type reference may be a catalogue number.
8.2 Replacement:
Appliance outlets other than those integrated in an appliance or equipment shall be marked
with
– the name, trade mark or identification mark of the manufacturer or of the responsible
vendor, and
– a type reference, the latter being not visible after the appliance outlet is correctly mounted
or when a plug connector is in engagement.
NOTE – The type reference may be a catalogue number.
8.3 Replacement:
Plug connectors and appliance outlets for class II equipment shall not be marked with the
symbol for class II construction.
8.5 Replacement:
The marking specified in 8.1 shall be easily discernible when the plug connector is wired ready
for use.
NOTE – The term "ready for use" does not imply that the plug connector is in engagement with an appliance outlet.
8.6 Replacement:
In non-reversible plug connectors, the contact positions shall be established by looking at the
engagement face of the plug connectors and their disposition shall be as follows:
earthing contact: upper central position;
line contact: lower left-hand position;
neutral contact: lower right-hand position.

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60320-2-2 © IEC:1998 – 19 –
In rewirable, non-reversible plug connectors, terminals shall be indicated as follows:
earthing terminal: the symbol     ;
neutral terminal: the letter N.
In non-rewirable, non-reversible plug connectors, no marking of contacts is necessary, but
cores shall be connected as specified in 22.1.
Appliance outlets other than those integrated or incorporated in an appliance or equipment, for
use with plug connectors according to this subclause, shall have terminal markings to
correspond with this subclause.
The marking symbol or letters shall not be placed on screws, removable washers or other
removable parts.
NOTE – The requirement concerning the marking of terminals and the connection of conductors has been
introduced to align with the corresponding requirement for appliance couplers, which was introduced to take
account of those countries which require a polarized supply system and the introduction of the IEC plug and socket-
outlet system (see IEC 60906).
9 Dimensions and compatibility
This clause of IEC 60320-1 applies amended as follows:
Replacement:
9.1 Interconnection couplers shall comply with the appropriate standard sheets as specified
below, except as permitted by 9.6:
2,5 A 250 V interconnection coupler for class I equipment:
– plug connector . Sheet A
– appliance outlet . Sheet B
2,5 A 250 V interconnection coupler for class II equipment:
– plug connector . Sheet C
– appliance outlet . Sheet D
10 A 250 V interconnection coupler for class I equipment:
– plug connector . Sheet E
– appliance outlet . Sheet F
10 A 250 V interconnection coupler for class II equipment:
– plug connector . . Sheet G
– appliance outlet . . Sheet H
16 A 250 V interconnection coupler for class I equipment
– plug connector . Sheet I
– appliance outlet. Sheet J
16 A 250 V interconnection coupler for class II equipment:
– plug connector . Sheet K
– appliance outlet. Sheet L

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60320-2-2 © IEC:1998 – 21 –
Compliance is checked by measurement or by means of gauges at an ambient temperature of
25 °C ± 5 °C.
The accessories shall be tested with the gauges according to the following table:
Accessory to be tested Gauge
10 A plug connectors of standard sheets E and G Figure 9H
16 A plug connectors of standard sheets I and K Figure 9M
10 A appliance outlet of standard sheet F Figure 101
10 A appliance outlet of standard sheet H Figure 102
16 A appliance outlet of standard sheet J Figure 103
16 A appliance outlet of standard sheet L Figure 104
9.2 Provision, if any, for retaining the plug connector in the appliance outlet shall comply with
standard sheet. (under consideration).
9.3 It shall not be possible to make single-pole connections between plug connectors and
appliance outlets.
Appliance outlets shall not allow improper connections with plugs complying with IEC 60083.
Plug connectors shall not allow improper connections with portable socket-outlets complying
with the same IEC 60083 nor with connectors complying with IEC 60320-1.
Compliance is checked by manual test.
NOTE 1 – Improper connections include single-pole connections and other connections which do not comply with
the requirements concerning protection against electric shock.
NOTE 2 – Conformity to the standard sheets ensures compliance with these requirements.
9.4 It shall not be possible to engage
– plug connectors for class I equipment with appliance outlets for class II equipment;
– plug connectors with appliance outlets having a lower rated current than the plug connector.
Compliance is checked by inspection, by manual test and by means of gauges at an ambient
temperature of 35 °C ± 2 °C.
NOTE 1 – Conformity to the standard sheets ensures compliance with the requirements, other than those verified
by means of the gauges.
NOTE 2 – Gauges are under consideration.
9.5 Not applicable.

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60320-2-2 © IEC:1998 – 23 –
10 Protection against electric shock
This clause of IEC 60320-1 applies amended as follows:
10.1 Replacement:
Interconnection couplers shall be so designed that live parts are not accessible when the plug
connector is in partial or complete engagement.
Appliance outlets shall be so designed that live parts are not accessible when the appliance
outlet is properly mounted as in normal use.
Compliance is checked by inspection and, if necessary, by a test with the standard test finger
shown in figure 10.
This finger is applied in every possible position, an electrical indicator being used to show
contact with the relevant parts. For plug connectors and appliance outlets with shrouds,
enclosures or bodies of rubber or thermoplastic material, the standard test finger is applied for
30 s with a force of 20 N at all points where yielding of the insulating material could impair the
safety of the plug connector; this test is made at an ambient temperature of 35 °C ± 2 °C.
NOTE 1 – The standard test finger must be so designed that each of the jointed sections can be turned through an
angle of 90° with respect to the axis of the finger in the same direction only.
NOTE 2 – An electrical indicator with a voltage between 40 V and 50 V is used to show contact with the relevant
part.
NOTE 3 – Conformity to the standard sheets ensures compliance with the requirements so far as the inaccessibility
of contact members during insertion of a plug connector into an appliance outlet is concerned.
10.2 Replacement:
It shall not be possible to make connection between a pin of a plug connector and a contact of
an appliance outlet as long as any live part of the pins is accessible.
Compliance is checked by manual test and by the test of 10.1.
NOTE – Conformity to the standard sheets ensures compliance with the requirements.
10.4 Replacement:
External parts of plug connectors and of appliance outlets, with the exception of assembly
screws and the like, shall be of insulating material.
Compliance is checked by inspection.
NOTE 1 – The suitability of the insulating material is checked during the insulation tests of clause 15.
NOTE 2 – Lacquer or enamel is not considered to be insulating material for the purposes of 10.1 to 10.4.

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60320-2-2 © IEC:1998 – 25 –
11 Provision for earthing
This clause of IEC 60320-1 applies amended as follows:
11.2 Replacement:
Interconnection couplers with earthing contact shall be so constructed that, when inserting the
plug connector, the earth connection is made before the current-carrying contacts of the plug
connector are energized.
When withdrawing a plug connector, the current-carrying contacts shall separate before the
earth connection is broken.
For interconnection couplers not complying with the standard sheets, compliance is checked by
inspection of drawings, taking into account the effect of tolerances, and by checking the
specimens against these drawings.
NOTE – Conformity to the standard sheets ensures compliance with the requirement.
12 Terminals and terminations
This clause of IEC 60320-1 applies.
13 Construction
This clause of IEC 60320-1 applies amended as follows:
13.1 Replacement:
Interconnection couplers shall be so designed that there is no risk of accidental contact
between the earthing contact of the plug connector and the current-carrying contacts of the
appliance outlet.
Compliance is checked by inspection.
NOTE – Conformity to the standard sheets ensures compliance with this requirement.
13.3 Replacement:
Pins of plug connectors and contacts of appliance outlets shall be locked against rotation.
Compliance is checked by inspection and by manual test.
NOTE – Clamping screws may serve to prevent contacts from rotating.
13.4 Replacement:
Pins of plug connectors shall be securely retained and shall have adequate mechanical
strength. They shall be surrounded by a shroud and it shall not be possible to remove them
without the aid of a tool.
The security of the pin retention is checked by inspection and, in case of doubt, by the
following test.

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60320-2-2 © IEC:1998 – 27 –
The specimen is heated to a temperature of 70 °C ± 2 °C for 1 h and maintained at this
temperature for the duration of the test, including the 5 min period after removal of the test
load.
The plug connector is held firmly in such a manner that there will be no undue squeezing or
distortion of the body, and the means of holding shall not assist in maintaining the pins in their
original position.
Each pin is subjected to a force of 60 N ± 0,6 N, applied without jerks, in a direction along the
axis of the pin and maintained at this value for a period of 60 s.
For all pins the force is applied, first in the direction away from the base of the plug connector
and then in the direction towards the base of the plug connector.
The attachment of the pins is deemed to be satisfactory if there is no movement exceeding
2,5 mm during the test on any pin, and provided that, within 5 min after removal of the pushing-
in test force or within 5 min after removal of the pulling-out test force, all pins remain within the
tolerances specified in the relevant standard sheet.
NOTE 1 – This requirement does not exclude pins which are to some extent floating.
NOTE 2 – The extent of permissible floating is not checked by measurement, but by using a gauge.
13.5 Replacement:
Contacts of appliance outlets shall be self-adjusting so as to provide adequate contact
pressure.
Self-adjustment of the contacts shall not depend upon the resiliency of insulating material.
Compliance is checked by inspection and by the tests of clauses 16 to 21 inclusive.
13.7 Not applicable.
13.8 The third paragraph of the requirement is not applicable.
13.9 Replacement:
For plug connectors, the earthing pin shall be fixed to the body. If the earthing terminal and the
earthing pin of a plug connector or the earthing terminal and the earthing contact of an
appliance outlet are not in one piece, the various parts shall be fixed together by riveting,
welding or in a similar reliable manner.
The connection between the earthing pin or contact and the earthing terminal shall be of metal
which is resistant to corrosion.
Compliance is checked by inspection and, if necessary, by special tests.
NOTE 1 – This requirement does not exclude earthing pins which are to some extent floating.
NOTE 2 – The extent of permissible floating is not checked by measurement, but by using the gauge as shown in
figure. (under consideration) for the 2,5 A plug connectors, and in figure 9H of IEC 60320-1 for the 10 A plug
connectors.
13.13 Not applicable.

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60320-2-2 © IEC:1998 – 29 –
14 Moisture resistance
This clause of IEC 60320-1 applies.
15 Insulation resistance and electric strength
This clause of IEC 60320-1 applies amended as follows:
15.2 Replacement:
The insulation res
...