SIST EN 60352-2:2006

SLOVENSKI SIST EN 60352-2:2006

STANDARD
oct 2006
Nespajkani spoji – 2. del: Nespajkani stisnjeni spoji – Splošne zahteve,
preskusne metode in praktični napotki (IEC 60352-2:2006)
Solderless connections -- Part 2: Crimped connections – General requirements,
test methods and practical guidance (IEC 60352-2:2006)
ICS 29.120.20 Referenčna številka
SIST EN 60352-2:2006(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD
EN 60352-2

NORME EUROPÉENNE
May 2006
EUROPÄISCHE NORM

ICS 31.220.10 Supersedes EN 60352-2:1994 + A1:1997 + A2:2002


English version


Solderless connections
Part 2: Crimped connections -
General requirements,
test methods and practical guidance
(IEC 60352-2:2006)


Connexions sans soudure Lötfreie Verbindungen
Partie 2: Connexions serties - Teil 2: Crimpverbindungen -
Exigences générales, Allgemeine Anforderungen,
méthodes d'essai et guide pratique Prüfverfahren und Anwendungshinweise
(CEI 60352-2:2006) (IEC 60352-2:2006)




This European Standard was approved by CENELEC on 2006-03-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60352-2:2006 E

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EN 60352-2:2006 - 2 -
Foreword
The text of document 48B/1584/FDIS, future edition 2 of IEC 60352-2, prepared by SC 48B, Connectors,
of IEC TC 48, Electromechanical components and mechanical structures for electronic equipment, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60352-2 on
2006-03-01.
This European Standard supersedes EN 60352-2:1994 + A1:1997 + A2:2002.
It includes the following major technical changes with respect to EN 60352-2:1994 and its amendments:
a) the contents of clauses have been re-arranged, for example the old Clauses 5, 6, 7, 8 and 9 are now
included in the new Clause 4, Requirements;
b) Subclause 4.3.1, the material requirements for crimp barrels have been changed from Vickers
hardness into more appropriate tensile strength requirements and the requirements have been
opened to other materials, if it is of suitable characteristics;
c) Subclause 4.3.3, Surface finishes: the tin-lead has been replaced by tin-alloy to comply with RoHS
legislation. Other plating materials, such as nickel, may be used provided their suitability has been
proven;
d) Subclause 5.1.4, Recovering, has been added;
e) Table 2, example of other materials, has been shortened;
f) Subclause 5.2.4.5 and Figure 7, Current loading, cyclic: the length of wire between two specimens
has been changed to a “minimum of 150 mm” to comply with regional requirements;
g) Subclause 5.2.4.6, Crimping at low temperature, has been changed to “under consideration”;
h) Subclause 15.4 of amendment A1 has been deleted for the sake of design freedom, because the
dimensions are not widely used as stated; only a minority of products, in most cases older ones have
these dimensions.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60352-2:2006 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 60352-2:2006
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year
IEC 60050-581 1978 International Electrotechnical Vocabulary - -
(IEV)
Chapter 581: Electromechanical components
for electronic equipment


IEC 60068-1 1988 Environmental testing
+ corr. October 1988 Part 1: General and guidance
+ A1 1992 EN 60068-1 1994




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 60512 Series Connectors for electronic equipment - Tests EN 60512 Series
and measurements


1)
IEC 60512-1-100 2001 Connectors for electronic equipment - Tests 2001
EN 60512-1-100
and measurements
Part 1-100: General - Applicable publications


IEC 60670 1989 Flat, quick-connect terminations - -
A1 1994


ISO 6892 1998 Metallic materials - Tensile testing at ambient - -
temperature





1)
EN 60512-1-100 is superseded by EN 60512-1-100:2006, which is based on IEC 60512-1-100:2006.

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NORME CEI
INTERNATIONALE
IEC



60352-2
INTERNATIONAL


Deuxième édition
STANDARD

Second edition

2006-02


Connexions sans soudure –
Partie 2:
Connexions serties –
Exigences générales, méthodes d'essai
et guide pratique

Solderless connections –
Part 2:
Crimped connections –
General requirements, test methods
and practical guidance

 IEC 2006 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 any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
XA
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60352-2  IEC:2006 – 3 –
CONTENTS
FOREWORD.9
INTRODUCTION.13

1 Scope and object.15
2 Normative references .15
3 Terms and definitions .17
4 Requirements .21
4.1 Workmanship .21
4.2 Tools .21
4.3 Crimp barrels .21
4.4 Wires .23
4.5 Crimped connections.23
5 Tests .25
5.1 Testing .25
5.2 Test methods and test requirements.27
5.3 Test schedules .41
6 General information on crimp connections .63
6.1 Advantages of crimped connections .63
6.2 Current-carrying capacity considerations.63
7 Tool information .65
8 Crimp barrel information .65
8.1 General .65
8.2 Materials .69
8.3 Surface finishes .69
8.4 Shapes of crimped connections .69
9 Wire information .75
9.1 General .75
9.2 Materials .75
9.3 Surface finishes .77
9.4 Stripping information .77
10 Connection information.83
10.1 General .83
10.2 Crimped connections made with more than one wire in a crimp barrel .91
10.3 Dimensions after crimping .91
10.4 Materials .91
11 Crimping process .91
11.1 Crimping of contacts with open crimp barrel .91
11.2 Crimping of contacts with open crimp barrel, loose piece contacts.91
11.3 Processing instruction .93
12 Correct crimped connections (additional information) .95
12.1 Correct crimped connections of contacts with an open crimp barrel .95
12.2 Measuring of crimp height/depth.95
12.3 Insulation grip .99

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60352-2  IEC:2006 – 5 –
13 Faults with crimped contacts having open barrels.101
14 General information about crimp type contacts as part of a multipole connector .107
14.1 Insertion of crimped contacts into the contact cavities of the connector
housing .107
14.2 Removal of inserted contacts .107
14.3 Mounting and bending of wire bundles/cables with crimped contacts .107
14.4 Mating and unmating of multipole connectors with crimped contacts .109
15 Final remarks .111

Figure 1 – Open crimp barrel .17
Figure 2 – Closed crimp barrels .17
Figure 3 – Pre-insulated crimp barrel .19
Figure 4 – Crimping zones .19
Figure 5 – Test arrangement for measurement of contact resistance .29
Figure 6 – Contact resistance R of crimped connections with copper barrels and
C
copper conductor (K = 1) .31
Figure 7 – Examples of test arrangements .37
Figure 8 – Test current for crimped connections .39
Figure 9 – Examples of type A specimens.43
Figure 10 – Examples of type B specimens.43
Figure 11 – Example of type C specimen .45
Figure 12 – Examples of type D specimens.45
Figure 13 – Example of type E specimen .47
Figure 14 – Basic test schedule (see 5.3.2) .59
Figure 15 – Full test schedule (see 5.3.3) .61
Figure 16 – Open crimp barrels.67
Figure 17 – Closed crimp barrels .69
Figure 18 – Crimping shape in the wire axis.71
Figure 19 – Crimping shape 90° angled to the wire axis.71
Figure 20 – Crimping shape without insulation grip .73
Figure 21 – Crimping shape with pre-insulation crimp barrel .73
Figure 22 – Crimping shape without pre-insulation crimp barrel .75
Figure 23 – Stripping length.77
Figure 24 – Correctly stripped wire .79
Figure 25 – Examples of stripping faults .81
Figure 26 – Examples of correctly crimped connections with open crimp barrels .83
Figure 27 – Examples of correctly crimped connections with closed crimp barrels.85
Figure 28 – Examples of crimping faults with open crimp barrels, with insulation grip .87
Figure 29 – Examples of crimping faults with closed crimp barrels, without insulation grip .89
Figure 30 – Crimping process of an open crimp barrel .93
Figure 31 – Correct crimped connections of contacts with open crimp barrel.95
Figure 32 – Measuring instructions .97
Figure 33 – Measuring process .97

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60352-2  IEC:2006 – 7 –
Figure 34 – Examples of insulation grips.99
Figure 35 – Examples of faults with crimped contacts .105
Figure 36 – Insertion of crimped contacts into contact cavities.107
Figure 37 – Mounting of wire bundles/cables with crimped contacts .109
Figure 38 – Bending of wire bundles of connectors .109
Figure 39 – Mating and unmating of multipole connectors.111

Table 1 – Pull out force of crimped connections .27
Table 2 – Example of other materials.33
Table 3 – Number of specimens.47
Table 4 – Test group P1 .49
Table 5 – Test group P2 .49
Table 6 – Test group P3 .51
Table 7 – Test group P4 .51
Table 8 – Test group A .53
Table 9 – Test group B .53
Table 10 – Test group C .55
Table 11 – Test group D .55
Table 12 – Test group E .57
Table 13 – Test group F.57
Table 14 – Test group G .57

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60352-2  IEC:2006 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SOLDERLESS CONNECTIONS –

Part 2: Crimped 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 60352-2 has been prepared by subcommittee 48B: Connectors, of
IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
This second edition cancels and replaces the first edition published in 1990 and its
amendments 1 (1996) and 2 (2002). This edition constitutes a technical revision.
This second edition includes the following major technical changes with respect to the
previous edition:
a) The contents of clauses have been re-arranged, for example the old clauses 5, 6, 7, 8 and
9 are now included in the new clause 4, Requirements.

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60352-2  IEC:2006 – 11 –
b) Subclause 4.3.1: the material requirements for crimp barrels have been changed from
Vickers hardness into more appropriate tensile strength requirements and the
requirements have been opened to other materials, if it is of suitable characteristics.
c) Subclause 4.3.3, Surface finishes: the tin-lead has been replaced by tin-alloy to comply
with RoHS legislation. Other plating materials, such as nickel, may be used provided their
suitability has been proven.
d) Subclause 5.1.4, Recovering, has been added.
e) Table 2, example of other materials, has been shortened.
f) Subclause 5.2.4.5 and Figure 7, Current loading, cyclic: the length of wire between two
specimens has been changed to a “minimum of 150 mm” to comply with regional
requirements.
g) Subclause 5.2.4.6, Crimping at low temperature, has been changed to “under
consideration”.
h) Subclause 15.4 of IEC 60352-2 amendment 1 (1996-11) has been deleted for the sake of
design freedom, because the dimensions are not widely used as stated; only a minority of
products, in most cases older ones have these dimensions.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/1584/FDIS 48B/1617/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 60352 consists of the following parts, under the general title Solderless connections:
Part 1: Wrapped connections − General requirements, test methods and practical guidance
Part 2: Crimped connections − General requirements, test methods and practical guidance
Part 3: Solderless accessible insulation displacement connections − General requirements,
test methods and practical guidance
Part 4: Solderless non-accessible insulation displacement connections − General
requirements, test methods and practical guidance
Part 5: Press-in connections − General requirements, test methods and practical guidance
Part 6: Insulation piercing connections − General requirements, test methods and practical
guidance
Part 7: Spring clamp connections − General requirements, test methods and practical
guidance
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.

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60352-2  IEC:2006 – 13 –
INTRODUCTION
IEC 60352-2 includes requirements, tests and practical guidance information. Two test
schedules are provided: a basic test schedule which applies to solderless crimped
connections which conform to all of the requirements given in Clause 4 and a full test
schedule which applies to solderless crimped connections which do not fully conform to all of
the requirements, for example which are made with solid wires, different materials, etc.
IEC Guide 109 advocates the need to minimise the impact of a product on the natural environ-
ment 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 the standard.

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60352-2  IEC:2006 – 15 –
SOLDERLESS CONNECTIONS –

Part 2: Crimped connections –
General requirements, test methods and practical guidance



1 Scope and object
This part of IEC 60352 is applicable to solderless crimped connections made with stranded
2 2
wires of 0,05 mm to 10 mm cross-section or solid wires of 0,25 mm to 3,6 mm diameter and
appropriately designed uninsulated or pre-insulated crimp barrels for use in telecom-
munication equipment and in electronic devices employing similar techniques.
Information on the materials and data from industrial experience is included in addition to the
test procedures to provide electrically stable connections under prescribed environmental
conditions.
NOTE This part of IEC 60352 is not intended to be applicable to crimping of coaxial cables.
The object of this part of IEC 60352 is to determine the suitability of solderless crimped
connections under specified mechanical, electrical and atmospheric conditions and to provide
a means of comparing test results when the tools used to make the connections are of
different designs or manufacture.
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
...