IEC 60352-7:2002

Solderless connections - Part 7: Spring clamp connections - General requirements, test methods and practical guidance

Determines the suitability of spring-clamp connections under specified mechanical, electrical and atmospheric conditions. Is applicable to spring-clamp connections made with stripped wire without further preparation.

Connexions sans soudure - Partie 7: Connexions à ressort - Règles générales, méthodes d'essai et guide pratique

Détermine la conformité des connexions à ressort dans des conditions mécaniques, électriques et atmosphériques spécifiées. Est applicable aux connexions à ressort réalisées avec du fil dénudé sans autre préparation.

General Information

• Status: Published
• Publication Date: 13-Aug-2002
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: SC 48B - Electrical connectors
• Drafting Committee: WG 6 - TC 48/SC 48B/WG 6
• Current Stage: DELPUB - Deleted Publication
• Start Date: 16-Dec-2020
• Completion Date: 10-Jan-2020

Relations

• Revised: IEC 60352-7:2020 - Solderless connections - Part 7: Spring clamp connections - General requirements, test methods and practical guidance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60352-7
First edition
2002-08
Solderless connections –
Part 7:
Spring clamp connections –
General requirements, test methods
and practical guidance
Connexions sans soudure –
Partie 7:
Connexions à ressort –
Règles générales, méthodes d'essai
et guide pratique
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
Further information on IEC publications
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INTERNATIONAL IEC
STANDARD
60352-7
First edition
2002-08
Solderless connections –
Part 7:
Spring clamp connections –
General requirements, test methods
and practical guidance
Connexions sans soudure –
Partie 7:
Connexions à ressort –
Règles générales, méthodes d'essai
et guide pratique
 IEC 2002  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
T
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60352-7  IEC:2002(E)
CONTENTS
FOREWORD . 3

INTRODUCTION .4

1 Scope and object . 5

2 Normative references. 5

3 Definitions. 6

4 Requirements . 8
4.1 Workmanship. 8
4.2 Tools . 8
4.3 Spring-clamp terminations. 8
4.4 Design features. 8
4.5 Wires. 8
4.6 Spring-clamp connections . 9
5 Tests . 9
5.1 Testing . 9
5.2 Test methods and test requirements .10
5.3 Test schedules .17
6 Practical guidance.22
6.1 Current-carrying capacity .22
6.2 Tool information.22
6.3 Termination information .22
6.4 Wire information .23
6.5 Connection information .25
Figure 1 – Examples of spring-clamp connections. 7
Figure 2 – Example of a spring-clamp terminal . 7
Figure 3 – Information for the wire deflection test.13
Figure 4 – Test arrangement, vibration .13
Figure 5 – Test arrangement, current method .15
Figure 6 – Basic test schedule (see 5.3.2) .20

Figure 7 – Full test schedule (see 5.3.3) .21
Figure 8 – Correctly stripped wire .24
Figure 9 – Examples of stripping faults .24
Table 1 – Values of tensile strength .11
Table 2 – Values for wire deflection test.12
Table 3 – Vibration, test severities .14
Table 4 – Rated current of the wires, initial and final contact resistance .15
Table 5 – Number of specimens required.17

60352-7  IEC:2002(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SOLDERLESS CONNECTIONS –
Part 7: Spring clamp connections – General requirements,

test methods and practical guidance

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 specifications, 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 60352-7 has been prepared by subcommittee 48B: Connectors, of
IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/1228/FDIS 48B/1243/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 3.
The committee has decided that the contents of this publication will remain unchanged until 2007.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 4 – 60352-7  IEC:2002(E)
INTRODUCTION
This part of IEC 60352 includes requirements, tests and practical guidance information.

Two test schedules are provided.

a) The basic test schedule applies to spring-clamp connections which conform to all require-

ments of clause 4. These requirements are derived from experience with successful

applications of such spring-clamp connections.

b) The full test schedule applies to spring-clamp connections which do not fully conform to all

requirements of clause 4, for example which are manufactured using materials or finishes

not included in clause 4. This approach permits cost and time effective performance
verification using a limited basic test schedule for established spring-clamp connections
and an expanded full test schedule for spring-clamp connections requiring more extensive
performance validation.
The values given in this specification are minimum values, which are harmonized with other
IEC documents. Other standards may specify other values.

60352-7  IEC:2002(E) – 5 –
SOLDERLESS CONNECTIONS –
Part 7: Spring clamp connections – General requirements,

test methods and practical guidance

1 Scope and object
This part of IEC 60352 is applicable to spring-clamp connections made with stripped wire

without further preparation:
2 2
– solid conductors of 0,32 mm to 3,7 mm nominal diameter (0,08 mm to 10 mm cross-
section), or
2 2
– stranded conductors of 0,08 mm to 10 mm cross-section, or
2 2
– flexible conductors of 0,08 mm to 10 mm cross-section
according to IEC 60228 or IEC 60189-3 for use in telecommunication equipment and in
electronic devices employing similar techniques.
Information on materials and data from industrial experience is included in addition to the test
procedures to provide electrically stable connections under prescribed environmental conditions.
The object of this part of IEC 60352 is to determine the suitability of spring-clamp connections
under specified mechanical, electrical and atmospheric conditions.
NOTE IEC Guide 109 advocates the need to minimize the impact of a product on the natural environment
throughout the product life cycle. It is understood that some of the materials permitted in this standard may have a
negative environmental impact. As technological advances lead to acceptable alternatives for these materials, they
will be eliminated from 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 60050(581):1978, International Electrotechnical Vocabulary (IEV) – Chapter 581: Electro-
mechanical components for electronic equipment
Amendment 1 (1998)
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60189-3:1988, Low frequency cables and wires with PVC insulation and PVC sheath –
Part 3: Equipment wires with solid or stranded conductor, PVC insulated, in singles,
pairs and triples
IEC 60228:1978, Conductors of insulated cables
Amendment 1 (1993)
IEC 60512 (all parts), Connectors for electronic equipment – Tests and measurements
IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements – Part 1-100:
General – Applicable publications
IEC 60884-1:1994, Plug and socket-outlets for household and similar purposes – Part 1:
General requirements.
– 6 – 60352-7  IEC:2002(E)
3 Definitions
For the purpose of this part of IEC 60352, the terms and definitions of IEC 60050(581) and

IEC 60512-1 and the following additional terms and definitions apply:

3.1
spring-clamp termination
part of the contact or terminal to which one single conductor only is connected by means
of a spring
3.1.1
universal spring-clamp termination
spring-clamp termination intended to accept solid, stranded and flexible unprepared conductors
3.1.2
non-universal spring-clamp termination
spring-clamp termination intended to accept conductors of one class only, for example
solid conductors only, or conductors of two classes only, for example solid and stranded
but not flexible
3.1.3
push-in spring-clamp termination
non-universal spring-clamp termination in which the connection is made by pushing in a solid
or stranded conductor
3.2
spring-clamp connection
solderless connection achieved by clamping a conductor with a spring-clamp termination,
see figure 1
IEC  1988/02
Figure 1a – Spring-clamp connection, operated without a tool

IEC  1989/02
Figure 1b – Spring-clamp connection, operated with a tool

60352-7  IEC:2002(E) – 7 –
IEC  1990/02
Figure 1c – Spring-clamp connection, operated with an actuating element

Figure 1d – Spring-clamp connections, with a push-in
spring-clamp termination, with solid wires
Figure 1 – Examples of spring-clamp connections
3.3
spring-clamp terminal
terminal designed to accept a conductor for the purpose of establishing a spring-clamp
connection, see figure 2
IEC  1992/02
Figure 2 – Example of a spring-clamp terminal

3.4
spring-clamp connecting device
device for the electrical connection of one or more conductors comprising one or more spring-
clamp terminations and, if necessary, insulation and/or auxiliary parts
3.5
actuating element
part of a spring-clamp termination or terminal to which an external force is to be applied.
Movement of the actuating element provides a means for activating or deactivating the spring.
[IEV 581-11-09, modified]
– 8 – 60352-7  IEC:2002(E)
4 Requirements
4.1 Workmanship
The connection shall be processed in a careful and workmanlike manner, in accordance with

good current practice.
4.2 Tools
Tools, if necessary, shall be used and inspected according to the instructions given by the

manufacturer.
4.3 Spring-clamp terminations
4.3.1 Materials
– Materials for the current-carrying parts:
suitable grades of copper or copper alloy shall be used.
– Materials for the spring-clamp parts:
suitable grades of copper alloy or steel shall be used.
4.3.2 Surface finishes
The contact area of the current-carrying parts shall be plated with tin or tin-alloy.
The surface shall be free of detrimental contamination or corrosion.
4.4 Design features
Spring-clamp terminations shall be designed so that the spring-clamp parts establish a
sufficient force to produce a reliable connection.
In a spring-clamp connecting device, each conductor shall be clamped individually.
The openings for use of a tool intended to assist the insertion or withdrawal of the conductor
shall be clearly distinguishable from the conductors entry hole.
Dimensions
The suitability of a spring clamp connection depends on the dimensions of the termination
together with the characteristics of the materials used.

The dimensions shall be chosen so as to be suitable for the wire or the range of wires for which
the termination is designed.
The suitability is verified by applying the test schedules given in clause 5.
4.5 Wires
Wires with solid, stranded and flexible conductors according to IEC 60228 or IEC 60189-3 shall
be used depending on the type of spring-clamp terminations.
4.5.1 Materials
The conductor used shall be made of annealed copper.

60352-7  IEC:2002(E) – 9 –
4.5.2 Dimensions
Wires with the following dimensions shall be used:
2 2
– solid wires of 0,32 mm to 3,7 mm nominal diameter (0,08 mm to 10 mm cross-section), or

2 2
– stranded wires of 0,08 mm to 10 mm cross-section, or

2 2
– flexible wires of 0,08 mm to 10 mm cross-section.

4.5.3 Surface finishes
The conductor shall be unplated or plated with tin or tin-alloy.

The conductor surface shall be free of contamination and corrosion which degrades
performance.
4.5.4 Wire insulation
The insulation shall be capable of being readily stripped from the conductor without changing
the physical characteristics of the conductor or strands.
4.6 Spring-clamp connections
a) The combination of wire and spring-clamp termination shall be compatible.
b) The wire shall be stripped to the correct length specified by the manufacturer. The stripped
part of the conductor shall not be damaged and shall be clean and free from particles
of insulation.
c) The conductor shall be correctly located in the spring-clamp termination at the correct
depth specified by the manufacturer.
All strands of the wire shall be within the spring-clamp termination.
5 Tests
5.1 Testing
5.1.1 General
As explained in the introduction, there are two test schedules which shall be applied according
to the following conditions:
– spring-clamp connections which conform to all the requirements of clause 4 shall be tested
in accordance with and meet the requirements of the basic test schedule, see 5.3.2;

– spring-clamp connections which do not fully conform to all the requirements of clause 4, for
example which are made with different wire types and/or termination sizes and/or materials,
shall be tested and meet the requirements of the full test schedule given in 5.3.3.
5.1.2 Standard conditions for testing
Unless otherwise specified, all tests shall be carried out under standard conditions for testing
as specified in IEC 60512-1.
The ambient temperature and the relative humidity at which the measurements are made shall
be stated in the test report.
In case of dispute about test results, the test shall be repeated at one of the referred conditions
of IEC 60068-1.
– 10 – 60352-7  IEC:2002(E)
5.1.3 Preconditioning
Where specified, the connections shall be preconditioned under standard conditions for testing

for a period of 24 h, in accordance with IEC 60512-1.

5.1.4 Recovery
Where specified, the specimen shall be allowed to recover under standard conditions for
testing for a period of 1 h to 2 h, after conditioning.

5.1.5 Mounting of specimen
a) When mounting is required in a test, the specimens shall be mounted using the normal
mounting method, unless otherwise specified.
b) Each test specimen shall consist of one spring-clamp connection prepared as required in
the test schedules.
NOTE When more test specimens are required, they may be part of the same multipole spring-clamp
connecting devices.
5.2 Test methods and test requirements
NOTE As far as test methods are described in this standard, it is intended that the description will be replaced by
a reference to the appropriate part of IEC 60512 as soon as the relevant test method is included in IEC 60512. IEC
60512-1-100 contains a list of test methods and the relevant parts of the IEC 60512 series.
5.2.1 General examination
The examination shall be carried out in accordance with Test 1a: Visual examination, of
IEC 60512, and Test 1b: Examination of dimension and mass, of IEC 60512. The visual
examination test may be carried out with magnification up to approximately five times.
All spring-clamp terminations and wires shall be examined to ensure that the applicable
requirements of 4.3 to 4.6 have been met.
5.2.2 Mechanical tests
5.2.2.1 Tensile strength
The test shall be carried out in accordance with Test 16t: Mechanical strength (wired
terminations of solderless connections), method A, of IEC 60512.
Requirement:
The tensile strength of spring-clamp connections shall be not less than specified in table 1,
unless otherwise specified by the detail specification.

60352-7  IEC:2002(E) – 11 –
Table 1 – Values of tensile strength

Conductor cross-section Values of tensile strength

mm N min.
≥0,08 4
0,22
0,34
0,5 20
0,75 30
1,0
1,5
2,5 50
4,0 60
6,0
10,0
5.2.2.2 Wire deflection
NOTE This test method is in accordance with the deflection test of IEC 60884-1.
Spring clamp terminations shall be so designed that the inserted solid conductor remains
clamped, even when the conductor has been deflected during normal installation, for example,
during mounting in a box, and the deflecting stress is transferred to the spring-clamp
termination.
Compliance is checked by the following test which is made on specimens which have not been
used for any other test.
a) Test apparatus
The test apparatus, the principle of which is shown in figure 3, shall be so constructed that:
– a specified conductor, properly inserted into a terminal, is allowed to be deflected in any
of the 12 directions differing from each other by 30°, with a tolerance referred to each
direction of ±5° and;
– the starting point can be varied by 10° and 20° from the original point.
NOTE A reference direction need not be specified.
The deflection of the conductor from its straight position to the testing positions shall be

effected by means of a suitable device applying a specified force to the conductor at
a certain distance from the terminal.
The deflecting device shall be so designed that:
– the force is applied in the direction perpendicular to the undeflected conductor;
– the deflection is attained without rotation or displacement of the conductor within the
clamping unit, and
– the force remains applied whilst the prescribed voltage drop measurement is made.
Provisions shall be made so that the voltage drop across the spring-clamp termination
under test can be measured when the conductor is connected, as shown for example in
figure 3.
– 12 – 60352-7  IEC:2002(E)
b) Test method
The specimen is mounted on the fixed part of the test apparatus in such a way that the

specified conductor inserted into the spring-clamp termination under test can be freely

deflected.
The surface of the test conductor shall be free of detrimental contamination or corrosion.

NOTE 1 If necessary, the inserted conductor may be permanently bent around obstacles, so that these do
not influence the results of the test.

NOTE 2 In some cases, with the exception of the case of guidance for the conductors, it may be advisable
to remove those parts of the specimen which do not allow the deflection of the conductor corresponding to the

force to be applied.
A spring-clamp termination is fitted as for normal use with a solid copper conductor having
the smallest cross-sectional area as specified by the manufacturer and is submitted to a
first test sequence; the same spring-clamp termination is submitted to a second test
sequence using the conductor having the largest cross-sectional area, unless the first test
sequence has failed.
The force for deflecting the conductor is specified in table 2, the distance of 100 mm being
measured from the extremity of the terminal, including the guidance for the conductor, if
any, to the point of application of the force to the conductor.
The test is made with continuous current (i.e. the current is not switched on and off during
the test); a suitable power supply should be used so that the current variations are kept
within ±5 % during the test.
Table 2 – Values for wire deflection test
a
Cross-section of the test conductor Force for deflecting the test conductor
mm N
0,09
≤0,5
0,75 0,16
0,25
1,0
0,5
1,5
2,5 1,0
4 2,0
3,5
7,0
a
The forces are chosen so that they stress the conductors close to the limit of elasticity.
c) Test procedure
A tenth of the test current assigned to the wire according to table 4 is passed through the

spring-clamp connection under test. A force, according to table 2, is applied to the test
conductor inserted in the spring-clamp termination under test in the direction of one of
the 12 directions shown in figure 3 and the voltage drop across this spring-clamp
connection is measured. The force is then removed.
The force is then applied successively in each of the remaining 11 directions shown in
figure 3 following the same test procedure.
If at any of the 12 test directions the voltage drop is greater than 2,5 mV, the force is kept
applied in this direction until the voltage drop is reduced to a value below 2,5 mV, but for
not more than 1 min. After the voltage drop has reached a value lower than or equal to
2,5 mV, the force is kept applied in the same direction for a further period of 30 s during
which period the voltage drop shall not have increased.
The other specimens of the set are tested following the same test procedure, but moving
the 12 directions of the force so that they differ by approximately 10° for each specimen.
If one specimen has failed at on
...

IEC 60352-7
Edition 1.0 2002-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Solderless connections –
Part 7: Spring clamp connections – General requirements, test methods and
practical guidance
Connexions sans soudure –
Partie 7: Connexions à ressort – Règles générales, méthodes d’essai et guide
pratique
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IEC 60352-7
Edition 1.0 2002-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Solderless connections –
Part 7: Spring clamp connections – General requirements, test methods and
practical guidance
Connexions sans soudure –
Partie 7: Connexions à ressort – Règles générales, méthodes d’essai et guide
pratique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 31.220.10 ISBN 2-8318-6812-2
– 2 – 60352-7 © CEI:2002
SOMMAIRE
AVANT-PROPOS .4
INTRODUCTION.6

1 Domaine d’application et objet .8
2 Références normatives .8
3 Définitions.10
4 Exigences.14
4.1 Exécution .14
4.2 Outils.14
4.3 Contacts à ressort .14
4.4 Caractéristiques de conception .14
4.5 Fils.14
4.6 Connexion à ressort.16
5 Essais.16
5.1 Essais .16
5.2 Méthodes d’essai et exigences .18
5.3 Programmes d’essais .32
6 Guide pratique .44
6.1 Courant limite .44
6.2 Informations sur les outils .44
6.3 Informations sur les contacts .44
6.4 Information sur le fil.46
6.5 Informations sur les connexions.50

Figure 1 – Exemples de connexions à ressort.12
Figure 2 – Exemple d’un contact à ressort .12
Figure 3 – Indications pour l’essai de déflexion.24
Figure 4 – Montage d’essai pour les vibrations .24
Figure 5 – Montage d’essai, méthode du courant.28
Figure 6 – Programme d’essais de base (voir 5.3.2) .40
Figure 7 – Programme d’essais complet (voir 5.3.3) .42
Figure 8 – Fil correctement dénudé .48
Figure 9 – Exemples de défauts de dénudage .48

Tableau 1 – Valeurs de tenue à la traction.20
Tableau 2 – Valeurs pour l’essai de déflexion du fil.22
Tableau 3 – Vibrations, sévérités d’essai.26
Tableau 4 – Courant nominal des fils, résistances de contact initiale et finale .30
Tableau 5 – Nombre de spécimens requis .34

60352-7 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.7

1 Scope and object .9
2 Normative references.9
3 Definitions.11
4 Requirements.15
4.1 Workmanship.15
4.2 Tools.15
4.3 Spring-clamp terminations .15
4.4 Design features.15
4.5 Wires.15
4.6 Spring-clamp connections.17
5 Tests.17
5.1 Testing.17
5.2 Test methods and test requirements .19
5.3 Test schedules .33
6 Practical guidance .45
6.1 Current-carrying capacity.45
6.2 Tool information.45
6.3 Termination information .45
6.4 Wire information.47
6.5 Connection information .50

Figure 1 – Examples of spring-clamp connections .13
Figure 2 – Example of a spring-clamp terminal .13
Figure 3 – Information for the wire deflection test .25
Figure 4 – Test arrangement, vibration .25
Figure 5 – Test arrangement, current method .29
Figure 6 – Basic test schedule (see 5.3.2) .41
Figure 7 – Full test schedule (see 5.3.3).43
Figure 8 – Correctly stripped wire .49
Figure 9 – Examples of stripping faults .49

Table 1 – Values of tensile strength.21
Table 2 – Values for wire deflection test .23
Table 3 – Vibration, test severities.27
Table 4 – Rated current of the wires, initial and final contact resistance .31
Table 5 – Number of specimens required .35

– 4 – 60352-7 © CEI:2002
COMMISSION ELECTROTECHNIQUE INTERNATIONALE
____________
CONNEXIONS SANS SOUDURE –
Partie 7: Connexions à ressort – Règles générales,
méthodes d’essai et guide pratique

AVANT-PROPOS
1) La Commission Électrotechnique Internationale (CEI) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des comités d'études,
aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent également aux
travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux intéressés
sont représentés dans chaque comité d’études.
3) Les publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme tels par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final
4) Dans le but d'encourager l'unification internationale, les Comités nationaux de la CEI s'engagent à appliquer de
façon transparente, dans toute la mesure possible, les Normes internationales de la CEI dans leurs normes
nationales et régionales. Toute divergence entre la norme de la CEI et la norme nationale ou régionale
correspondante doit être indiquée en termes clairs dans cette dernière.
5) La CEI n’a fixé aucune procédure concernant le marquage comme indication d’approbation et sa responsabilité
n’est pas engagée quand un matériel est déclaré conforme à l’une de ses normes.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de
toute autre Publication de la CEI, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La Norme internationale CEI 60352-7 a été établie par le sous-comité 48B: Connecteurs, du
comité d'études 48 de la CEI: Composants électromécaniques et structures mécaniques pour
équipements électroniques.
Cette version bilingue, publiée en 2003-01, correspond à la version anglaise.
Le texte anglais de cette norme est issu des documents 48B/1228/FDIS et 48B/1243/RVD.
Le rapport de vote 48B/1243/RVD donne toute information sur le vote ayant abouti à l’appro-
bation de cette norme.
La version française de cette norme n’a pas été soumise au vote.
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant 2007.
A cette date, la publication sera
• reconduite;
• supprimée;
• remplacée par une édition révisée, ou
• amendée.
60352-7 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SOLDERLESS CONNECTIONS –
Part 7: Spring clamp connections – General requirements,
test methods and practical guidance

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
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
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 60352-7 has been prepared by subcommittee 48B: Connectors, of
IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
This bilingual version, published in 2003-01, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/1228/FDIS 48B/1243/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.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until 2007.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 6 – 60352-7 © CEI:2002
INTRODUCTION
La présente partie de la CEI 60352 contient des exigences, des essais et un guide pratique.
Deux programmes d'essais sont proposés.
a) Le programme d'essais de base s’applique aux connexions à ressort conformes à toutes
les exigences de l’article 4. Ces exigences sont élaborées à partir de l’expérience acquise
sur des applications menées à bien sur de telles connexions à ressort.
b) Le programme d'essais complet s’applique aux connexions à ressort qui ne sont pas
totalement conformes à toutes les exigences de l’article 4, par exemple celles réalisées à
partir de matières ou de traitements de surface non définis dans l’article 4. Cette approche
permet un contrôle optimisé en coût et en temps, en utilisant un programme d’essais de
base réduit pour les connexions à ressort éprouvées et un programme d’essais complet
étendu pour les connexions à ressort nécessitant une vérification complète des
performances.
Les valeurs données dans cette norme sont des valeurs minimales qui sont harmonisées avec
d’autres documents de la CEI. D’autres normes peuvent spécifier d’autres valeurs.

60352-7 © IEC:2002 – 7 –
INTRODUCTION
This part of IEC 60352 includes requirements, tests and practical guidance information.
Two test schedules are provided.
a) The basic test schedule applies to spring-clamp connections which conform to all require-
ments of clause 4. These requirements are derived from experience with successful
applications of such spring-clamp connections.
b) The full test schedule applies to spring-clamp connections which do not fully conform to all
requirements of clause 4, for example which are manufactured using materials or finishes
not included in clause 4. This approach permits cost and time effective performance
verification using a limited basic test schedule for established spring-clamp connections
and an expanded full test schedule for spring-clamp connections requiring more extensive
performance validation.
The values given in this specification are minimum values, which are harmonized with other
IEC documents. Other standards may specify other values.

– 8 – 60352-7 © CEI:2002
CONNEXIONS SANS SOUDURE –
Partie 7: Connexions à ressort– Règles générales,
méthodes d’essai et guide pratique

1 Domaine d’application et objet
La présente partie de la CEI 60352 est applicable aux connexions à ressort réalisées avec du
fil dénudé sans autre préparation,
– sur des conducteurs rigides de 0,32 mm à 3,7 mm de diamètre nominal (section: 0,08 mm
à 10 mm ), ou
2 2
– sur des conducteurs divisés de section: 0,08 mm à 10 mm , ou
2 2
– sur des conducteurs souples de section: 0,08 mm à 10 mm ,
selon la CEI 60228 ou la CEI 60189-3, utilisées dans les équipements de télécommunication et
les systèmes électroniques employant des techniques similaires.
Des informations sur les matières et des résultats provenant de l'expérience industrielle y sont
inclus en supplément aux méthodes d'essais, pour assurer des connexions électriquement
stables dans les conditions d'environnement prescrites.
L'objet de cette partie de la CEI 60352 est de déterminer la conformité des connexions à
ressort dans des conditions mécaniques, électriques et atmosphériques spécifiées.
NOTE Le guide 109 de la CEI met en évidence le besoin de réduire l’incidence d’un produit sur l’environnement
naturel tout au long du cycle de vie du produit. Il doit être entendu que quelques-unes des matières autorisées dans
cette norme sont reconnues comme pouvant avoir un effet négatif sur l’environnement. Dès que les progrès
technologiques conduiront à des alternatives acceptables pour ces matières, celles-ci seront éliminées de cette
norme.
2 Références normatives
Les documents de référence suivants sont indispensables pour l’application du présent
document. Pour les références datées, seule l’édition citée s’applique. Pour les références non
datées, la dernière édition du document de référence s’applique (y compris les éventuels
amendements).
CEI 60050(581):1978, Vocabulaire Electrotechnique International (VEI) – Chapitre 581:
Composants électromécaniques pour équipements électroniques
Amendement 1 (1998)
CEI 60068-1:1988, Essais d’environnement – Partie 1: Généralités et guide
Amendement 1 (1992)
CEI 60189-3:1988, Câbles et fils pour basses fréquences isolés au PVC et sous gaine de PVC –
Troisième partie: Fils d'équipement en conducteurs simples en paires et en tierces, à
conducteur massif ou divisé, isolés au PVC
CEI 60228:1978, Ames des câbles isolés
Amendement 1 (1993)
CEI 60512 (toutes parties), Connecteurs pour équipements électroniques – Essais et mesures

60352-7 © IEC:2002 – 9 –
SOLDERLESS CONNECTIONS –
Part 7: Spring clamp connections – General requirements,
test methods and practical guidance

1 Scope and object
This part of IEC 60352 is applicable to spring-clamp connections made with stripped wire
without further preparation:
2 2
– solid conductors of 0,32 mm to 3,7 mm nominal diameter (0,08 mm to 10 mm cross-
section), or
2 2
– stranded conductors of 0,08 mm to 10 mm cross-section, or
2 2
– flexible conductors of 0,08 mm to 10 mm cross-section
according to IEC 60228 or IEC 60189-3 for use in telecommunication equipment and in
electronic devices employing similar techniques.
Information on materials and data from industrial experience is included in addition to the test
procedures to provide electrically stable connections under prescribed environmental conditions.
The object of this part of IEC 60352 is to determine the suitability of spring-clamp connections
under specified mechanical, electrical and atmospheric conditions.
NOTE IEC Guide 109 advocates the need to minimize the impact of a product on the natural environment
throughout the product life cycle. It is understood that some of the materials permitted in this standard may have a
negative environmental impact. As technological advances lead to acceptable alternatives for these materials, they
will be eliminated from 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 60050(581):1978, International Electrotechnical Vocabulary (IEV) – Chapter 581: Electro-
mechanical components for electronic equipment
Amendment 1 (1998)
IEC 60068-1:1988, Environmental testing – Part 1: General and guidance
Amendment 1 (1992)
IEC 60189-3:1988, Low frequency cables and wires with PVC insulation and PVC sheath –
Part 3: Equipment wires with solid or stranded conductor, PVC insulated, in singles,
pairs and triples
IEC 60228:1978, Conductors of insulated cables
Amendment 1 (1993)
IEC 60512 (all parts), Connectors for electronic equipment – Tests and measurements

– 10 – 60352-7 © CEI:2002
CEI 60512-1-100, Connecteurs pour équipements électroniques – Essais et mesures –
Partie 1-100: Généralités – Publications applicables
CEI 60884-1:1994, Prises de courant pour usages domestiques et analogues – Partie 1:
Règles générales
3 Définitions
Pour les besoins de la présente partie de la CEI 60352, les termes et définitions de la CEI
60050(581) et de la CEI 60512-1 ainsi que les termes et définitions suivants sont applicables.
3.1
contact à ressort
partie du contact ou du raccord à laquelle seulement un conducteur simple est connecté par
l’intermédiaire d’un ressort
3.1.1
contact à ressort universel
contact à ressort destiné à accepter des conducteurs rigides , divisés et souples sans
préparation
3.1.2
contact à ressort non universel
contact à ressort destiné à accepter des conducteurs d’une classe seulement, par exemple
seulement des conducteurs rigides, ou de deux classes seulement, par exemple rigides et
divisés mais non pas souples
3.1.3
contact à ressort à introduction en poussant sur le fil
contact à ressort non universel dans lequel la connexion est réalisée par poussée sur le
conducteur rigide ou divisé
3.2
connexion à ressort
connexion sans soudure réalisée par le serrage d’un conducteur à l’aide d’un contact à ressort,
voir figure 1
IEC 1988/02
Figure 1a – Connexion à ressort, manœuvrée sans outil

IEC 1989/02
Figure 1b – Connexion à ressort, manœuvrée avec outil

60352-7 © IEC:2002 – 11 –
IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements – Part 1-100:
General – Applicable publications
IEC 60884-1:1994, Plug and socket-outlets for household and similar purposes – Part 1:
General requirements
3 Definitions
For the purpose of this part of IEC 60352, the terms and definitions of IEC 60050(581) and
IEC 60512-1 and the following additional terms and definitions apply:
3.1
spring-clamp termination
part of the contact or terminal to which one single conductor only is connected by means
of a spring
3.1.1
universal spring-clamp termination
spring-clamp termination intended to accept solid, stranded and flexible unprepared conductors
3.1.2
non-universal spring-clamp termination
spring-clamp termination intended to accept conductors of one class only, for example
solid conductors only, or conductors of two classes only, for example solid and stranded
but not flexible
3.1.3
push-in spring-clamp termination
non-universal spring-clamp termination in which the connection is made by pushing in a solid
or stranded conductor
3.2
spring-clamp connection
solderless connection achieved by clamping a conductor with a spring-clamp termination,
see figure 1
IEC  1988/02
Figure 1a – Spring-clamp connection, operated without a tool

IEC  1989/02
Figure 1b – Spring-clamp connection, operated with a tool

– 12 – 60352-7 © CEI:2002
IEC  1990/02
Figure 1c – Connexion à ressort, manœuvrée avec un organe de commande

IEC  1991/02
Figure 1d – Connexions à ressort, à partir d’un contact à ressort à poussée
sur le conducteur de fil rigide
Figure 1 – Exemples de connexions à ressort
3.3
contact à ressort
contact conçu pour accepter un conducteur dans le but d’établir une connexion par contact
à ressort, voir figure 2
IEC 1992/02
Figure 2 – Exemple d’un contact à ressort
3.4
composant à contacts à ressort
composant pour connexions électriques d’un ou plusieurs conducteurs qui comprend un ou
plusieurs contacts à ressort et, si nécessaire, de l’isolant et/ou des pièces auxiliaires
3.5
organe de commande
partie d’un raccord ou d’un contact à ressort à laquelle une force externe est appliquée. Le
mouvement de l’organe de commande entraîne la mise en service ou hors service du ressort
[VEI 581-11-09, modifiée]
60352-7 © IEC:2002 – 13 –
IEC  1990/02
Figure 1c – Spring-clamp connection, operated with an actuating element

IEC  1991/02
Figure 1d – Spring-clamp connections, with a push-in
spring-clamp termination, with solid wires
Figure 1 – Examples of spring-clamp connections
3.3
spring-clamp terminal
terminal designed to accept a conductor for the purpose of establishing a spring-clamp
connection, see figure 2
IEC  1992/02
Figure 2 – Example of a spring-clamp terminal
3.4
spring-clamp connecting device
device for the electrical connection of one or more conductors comprising one or more spring-
clamp terminations and, if necessary, insulation and/or auxiliary parts
3.5
actuating element
part of a spring-clamp termination or terminal to which an external force is to be applied.
Movement of the actuating element provides a means for activating or deactivating the spring.
[IEV 581-11-09, modified]
– 14 – 60352-7 © CEI:2002
4 Exigences
4.1 Exécution
Les connexions doivent être exécutées de façon soignée et dans les règles de l’art.
4.2 Outils
Les outils, si nécessaire, doivent être utilisés et inspectés en accord avec les instructions
données par le fabricant.
4.3 Contacts à ressort
4.3.1 Matières
– Matières pour les pièces parcourues par du courant:
des nuances adaptées du cuivre ou des alliages de cuivre doivent être utilisés;
– Matières pour les pièces du ressort de serrage:
des nuances adaptées des alliages de cuivre ou d’acier doivent être utilisées.
4.3.2 Traitement de surface
La surface de contact des pièces parcourues par le courant doit être revêtue d’étain ou
d’alliage d’étain.
La surface doit être exempte de contamination ou de corrosion néfastes pour les
performances.
4.4 Caractéristiques de conception
Les contacts à ressort doivent être conçus de manière à ce que les pièces de serrage à ressort
établissent une force suffisante pour réaliser une connexion fiable.
Dans un composant de contacts à ressort, chaque conducteur doit être serré séparément.
Les ouvertures pour l’utilisation d’un outil en vue de faciliter l’insertion ou l’extraction du
conducteur doivent être clairement reconnaissables des trous d’entrée des conducteurs.
Dimensions
La bonne aptitude d’une connexion à ressort dépend à la fois des dimensions de la borne et
des caractéristiques des matériaux utilisés.
Les dimensions doivent être choisies de manière à convenir au fil ou à la gamme de fils pour
lesquels la borne est conçue.
La bonne aptitude est vérifiée en appliquant les programmes d’essais donnés à l’article 5.
4.5 Fils
Les fils de conducteurs rigides, divisés et souples suivant la CEI 60228 ou la CEI 60189-3
doivent être utilisés selon le type de connexions à ressort utilisées.
4.5.1 Matières
Le conducteur utilisé doit être fait de cuivre recuit.

60352-7 © IEC:2002 – 15 –
4 Requirements
4.1 Workmanship
The connection shall be processed in a careful and workmanlike manner, in accordance with
good current practice.
4.2 Tools
Tools, if necessary, shall be used and inspected according to the instructions given by the
manufacturer.
4.3 Spring-clamp terminations
4.3.1 Materials
– Materials for the current-carrying parts:
suitable grades of copper or copper alloy shall be used.
– Materials for the spring-clamp parts:
suitable grades of copper alloy or steel shall be used.
4.3.2 Surface finishes
The contact area of the current-carrying parts shall be plated with tin or tin-alloy.
The surface shall be free of detrimental contamination or corrosion.
4.4 Design features
Spring-clamp terminations shall be designed so that the spring-clamp parts establish a
sufficient force to produce a reliable connection.
In a spring-clamp connecting device, each conductor shall be clamped individually.
The openings for use of a tool intended to assist the insertion or withdrawal of the conductor
shall be clearly distinguishable from the conductors entry hole.
Dimensions
The suitability of a spring clamp connection depends on the dimensions of the termination
together with the characteristics of the materials used.
The dimensions shall be chosen so as to be suitable for the wire or the range of wires for which
the termination is designed.
The suitability is verified by applying the test schedules given in clause 5.
4.5 Wires
Wires with solid, stranded and flexible conductors according to IEC 60228 or IEC 60189-3 shall
be used depending on the type of spring-clamp terminations.
4.5.1 Materials
The conductor used shall be made of annealed copper.

– 16 – 60352-7 © CEI:2002
4.5.2 Dimensions
Différentes gammes de fils doivent être utilisées:
2 2
– des fils rigides de 0,32 mm à 3,7 mm de diamètre nominal (section 0,08 mm à 10 mm ),
ou
2 2
– des fils divisés de section: 0,08 mm à 10 mm , ou
2 2
– des fils souples de section: 0,08 mm à 10 mm .
4.5.3 Traitement de surface
Le conducteur doit être brut ou revêtu d’étain ou d’alliage d’étain.
La surface du conducteur doit être exempte de contamination et de corrosion qui réduisent les
performances.
4.5.4 Isolant du fil
Il doit être possible de dénuder facilement l’isolant du fil, sans altérer les caractéristiques
physiques du conducteur ou des brins.
4.6 Connexion à ressort
a) La combinaison du fil et du contact à ressort doit être compatible.
b) Le fil doit être dénudé sur la longueur correcte définie par le fabricant. La partie dénudée
du conducteur ne doit pas être endommagée et doit être propre et exempte de morceaux
d’isolant.
c) Le conducteur doit être placé correctement dans la connexion à ressort , c’est-à-dire à la
profondeur correcte définie par le fabricant.
Tous les brins du fil doivent être dans la connexion à ressort.
5 Essais
5.1 Essais
5.1.1 Généralités
Comme cela est expliqué dans l’introduction, il y a deux programmes d’essais qui doivent être
appliqués dans les conditions suivantes:
– les connexions à ressort conformes à toutes les exigences de l’article 4 doivent être
essayées et répondre à toutes les exigences du programme d’essais de base de 5.3.2;
– les connexions à ressort qui ne sont pas totalement conformes aux exigences de l’article 4,
par exemple celles qui sont faites avec des fils de type différent, et/ou des connexions de
taille différente et/ou de matières différentes, doivent être essayées et répondre aux
exigences du programme d’essais complet donné en 5.3.3.
5.1.2 Conditions normales d'essai
Sauf indication contraire, tous les essais doivent être effectués dans les conditions normales
d'essai définies dans la CEI 60512-1.
La température ambiante et l'humidité relative auxquelles les mesures sont effectuées doivent
être mentionnées dans le rapport d'essai.

60352-7 © IEC:2002 – 17 –
4.5.2 Dimensions
Wires with the following dimensions shall be used:
2 2
– solid wires of 0,32 mm to 3,7 mm nominal diameter (0,08 mm to 10 mm cross-section), or
2 2
– stranded wires of 0,08 mm to 10 mm cross-section, or
2 2
– flexible wires of 0,08 mm to 10 mm cross-section.
4.5.3 Surface finishes
The conductor shall be unplated or plated with tin or tin-alloy.
The conductor surface shall be free of contamination and corrosion which degrades
performance.
4.5.4 Wire insulation
The insulation shall be capable of being readily stripped from the conductor without changing
the physical characteristics of the conductor or strands.
4.6 Spring-clamp connections
a) The combination of wire and spring-clamp termination shall be compatible.
b) The wire shall be stripped to the correct length specified by the manufacturer. The stripped
part of the conductor shall not be damaged and shall be clean and free from particles
of insulation.
c) The conductor shall be correctly located in the spring-clamp termination at the correct
depth specified by the manufacturer.
All strands of the wire shall be within the spring-clamp termination.
5 Tests
5.1 Testing
5.1.1 General
As explained in the introduction, there are two test schedules which shall be applied according
to the following conditions:
– spring-clamp connections which conform to all the requirements of clause 4 shall be tested
in accordance with and meet the requirements of the basic test schedule, see 5.3.2;
– spring-clamp connections which do not fully conform to all the requirements of clause 4, for
example which are made with different wire types and/or termination sizes and/or materials,
shall be tested and meet the requirements of the full test schedule given in 5.3.3.
5.1.2 Standard conditions for testing
Unless otherwise specified, all tests shall be carried out under standard conditions for testing
as specified in IEC 60512-1.
The ambient temperature and the relative humidity at which the measurements are made shall
be stated in the test report.
– 18 – 60352-7 © CEI:2002
En cas de désaccord sur les résultats d'essai, l'essai doit être répété suivant l'une des
conditions d'arbitrage indiquées dans la CEI 60068-1.
5.1.3 Préconditionnement
Lorsque cela est spécifié, les connexions doivent être préconditionnées dans les conditions
normales d'essai durant 24 h, suivant la CEI 60512-1.
5.1.4 Reprise
Lorsque cela est spécifié, les spécimens doivent avoir une durée de reprise dans les conditions
normales d'essai de 1 h à 2 h après l'épreuve.
5.1.5 Montage des spécimens
a) Lorsqu'un montage est requis dans un essai, les spécimens doivent être montés en
utilisant une méthode normale de montage, sauf spécification contraire.
b) Un spécimen d’essai doit être une connexion à ressort préparée selon les exigences des
programmes d’essais.
NOTE Lorsque plus de spécimens d’essai sont exigés, ils peuvent faire partie du même composant
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