Solderless connections - Part 4: Non-accessible insulation displacement (ID) connections - General requirements, test methods and practical guidance

IEC 60352-4:2020 is applicable to non-accessible ID connections for which the tests and measurements according to Clauses 6 through 8 are suitable and which are made with:
– appropriately designed ID terminations;
– wires having solid round conductors of 0,25 mm to 3,6 mm nominal diameter;
– wires having stranded conductors of 0,05 mm2 to 10 mm2 cross-sectional area;
for use in electrical and electronic equipment and components.
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.
There are different designs and materials for ID terminations in use. For this reason, only fundamental parameters of the termination are specified, while the performance requirements of the wire and the complete connection are specified in full detail.
The purpose of this document is:
– to determine the suitability of non-accessible ID connections under specified mechanical, electrical and atmospheric conditions;
– to provide a means of comparing test results when the tools used to make the connections, if any, are of different designs or manufacture.
This second edition cancels and replaces the first edition, published in 1994, and its Amendment 1 (2000). This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Transferred Clauses 9 to 13 into Annex A (informative).
b) The figures were re-drawn for clarity.

Connexions sans soudure - Partie 4: Connexions autodénudantes (CAD) non accessibles sans soudure - Règles générales, méthodes d’essai et guide pratique

IEC 600352-4:2020 s'applique aux connexions CAD non accessibles pour lesquelles les essais et les mesures conformes aux Articles 6 à 8 sont appropriés et qui sont composées de:
– contacts CAD de conception appropriée;
– fils à conducteurs cylindriques massifs de diamètre nominal 0,25 mm à 3,6 mm;
– fils à conducteurs divisés de section 0,05 mm2 à 10 mm2;
pour l'utilisation dans les équipements et composants électriques et électroniques.
Des informations sur les matières et des résultats dus à l'expérience industrielle y sont inclus en plus des méthodes d'essai pour assurer des connexions électriquement stables dans les conditions d'environnement prescrites.
Il y a différentes conceptions et matières utilisées pour les contacts CAD. C'est pourquoi seuls les paramètres fondamentaux du contact sont spécifiés, tandis que les exigences des performances du fil et de la connexion terminée sont définies dans tous les détails.
Le présent document a pour objet de:
– déterminer la conformité des connexions CAD non accessibles dans des conditions mécaniques, électriques et atmosphériques spécifiées;
– fournir un moyen de comparaison des résultats d'essai quand les outils utilisés pour faire les connexions, le cas échéant, sont de conceptions ou de fabrications différentes.
Cette deuxième édition annule et remplace la première édition parue en 1994, et son Amendement 1 (2000). La présente édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les Articles 9 à 13 ont été transférés à l'Annexe A (informative);
b) les figures ont été retravaillées pour plus de clarté.

General Information

Status
Published
Publication Date
10-Jun-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
11-Jun-2020
Ref Project

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IEC 60352-4
Edition 2.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Solderless connections –
Part 4: Non-accessible insulation displacement (ID) connections –
General requirements, test methods and practical guidance
Connexions sans soudure –
Partie 4: Connexions autodénudantes (CAD) non accessibles –
Règles générales, méthodes d'essai et guide pratique
IEC 60352-4:2020-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60352-4
Edition 2.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Solderless connections –
Part 4: Non-accessible insulation displacement (ID) connections –
General requirements, test methods and practical guidance
Connexions sans soudure –
Partie 4: Connexions autodénudantes (CAD) non accessibles –
Règles générales, méthodes d'essai et guide pratique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.20 ISBN 978-2-8322-8413-1

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60352-4:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms and definitions .................................................................................................... 10

4 Workmanship ................................................................................................................. 14

5 Prerequisites for basic test schedule ............................................................................. 14

5.1 General ................................................................................................................. 14

5.2 Prerequisites for ID terminations ........................................................................... 14

5.2.1 Non-accessible ID terminations materials ...................................................... 14

5.2.2 Non-accessible ID terminations dimensions ................................................... 14

5.2.3 Non-accessible ID terminations surface finishes ............................................ 14

5.2.4 Non-accessible ID terminations design features ............................................. 15

5.3 Prerequisites for wires and conductors.................................................................. 15

5.3.1 Wire and conductors ...................................................................................... 15

5.3.2 Conductor materials....................................................................................... 15

5.3.3 Wire and conductor dimensions ..................................................................... 15

5.3.4 Conductor surface finishes ............................................................................ 15

5.3.5 Wire insulation ............................................................................................... 15

5.4 Non-accessible insulation displacement connections (ID connections) .................. 16

6 Testing .......................................................................................................................... 16

6.1 Overview............................................................................................................... 16

6.2 General ................................................................................................................. 16

6.3 Standard conditions for testing .............................................................................. 16

6.4 Preconditioning ..................................................................................................... 16

6.5 Recovery .............................................................................................................. 17

6.6 Specimen .............................................................................................................. 17

7 Tests ............................................................................................................................. 17

7.1 General examination ............................................................................................. 17

7.2 Mechanical tests ................................................................................................... 17

7.2.1 General ......................................................................................................... 17

7.2.2 Bending of the cable/wire .............................................................................. 17

7.2.3 Vibration ........................................................................................................ 18

7.2.4 Repeated connection and disconnection, reusable non-accessible

ID terminations .............................................................................................. 19

7.2.5 Microsection .................................................................................................. 20

7.3 Electrical tests ...................................................................................................... 21

7.3.1 General ......................................................................................................... 21

7.3.2 Contact resistance ......................................................................................... 21

7.3.3 Electrical load and temperature ..................................................................... 22

7.4 Climatic tests ........................................................................................................ 22

7.4.1 General ......................................................................................................... 22

7.4.2 Rapid change of temperature ......................................................................... 22

7.4.3 Climatic sequence ......................................................................................... 23

7.4.4 Flowing mixed gas, corrosion test .................................................................. 23

7.4.5 Damp heat, cyclic .......................................................................................... 23

---------------------- Page: 4 ----------------------
IEC 60352-4:2020 © IEC 2020 – 3 –

8 Test schedules .............................................................................................................. 23

8.1 General ................................................................................................................. 23

8.1.1 Overview ....................................................................................................... 23

8.1.2 ID connections with terminations suitable for a range of wire diameters ......... 24

8.1.3 Multipole connectors ...................................................................................... 24

8.2 Basic test schedule ............................................................................................... 24

8.2.1 General ......................................................................................................... 24

8.2.2 Initial examination .......................................................................................... 25

8.2.3 Testing of non-accessible ID connections ...................................................... 25

8.3 Full test schedule .................................................................................................. 26

8.3.1 General ......................................................................................................... 26

8.3.2 Initial examination .......................................................................................... 27

8.3.3 Testing of non-accessible ID connections ...................................................... 27

8.4 Flow charts ........................................................................................................... 30

Annex A (informative) Practical guidance ............................................................................. 33

A.1 General information on non-accessible ID connections ......................................... 33

A.1.1 General ......................................................................................................... 33

A.1.2 Advantages of non-accessible ID connections ............................................... 33

A.2 Current-carrying capacity considerations .............................................................. 34

A.3 Tool information .................................................................................................... 34

A.3.1 Wire insertion tool .......................................................................................... 34

A.3.2 Wire extraction tool ........................................................................................ 34

A.3.3 Combination tool ........................................................................................... 34

A.4 Termination information ........................................................................................ 35

A.4.1 General ......................................................................................................... 35

A.4.2 Design features .............................................................................................. 35

A.4.3 Materials ....................................................................................................... 35

A.4.4 Surface finishes ............................................................................................ 35

A.5 Wire information.................................................................................................... 35

A.5.1 Type .............................................................................................................. 35

A.5.2 Dimensions .................................................................................................... 35

A.5.3 Surface finishes ............................................................................................ 35

A.5.4 Insulation ....................................................................................................... 35

A.5.5 Ribbon cable ................................................................................................. 36

A.6 Connection information ......................................................................................... 36

A.6.1 General ......................................................................................................... 36

A.6.2 ID connections made with more than one wire in one connection slot ............ 37

Annex B (informative) Application examples ........................................................................ 38

B.1 ID connections ...................................................................................................... 38

B.1.1 ID connections which can be examined by destructive inspection only ........... 38

B.1.2 ID connections which can be examined by non-destructive inspection ........... 39

B.2 General additional information about ID connections as part of a multi-pole

connector .............................................................................................................. 40

B.2.1 Mounting and bending of wire bundles/cables with contacts having ID

connections ................................................................................................... 40

B.2.2 Mating and unmating of multipole connectors with ID contacts ....................... 41

B.3 Examples for good transversal microsection or negative results (see

Figure B.6) ............................................................................................................ 41

B.4 Final remarks ........................................................................................................ 42

---------------------- Page: 5 ----------------------
– 4 – IEC 60352-4:2020 © IEC 2020

Bibliography .......................................................................................................................... 43

Figure 1 – Example of accessible and non-accessible insulation displacement

connection .............................................................................................................................. 7

Figure 2 – Insulation displacement connection ...................................................................... 11

Figure 3 – Slot ...................................................................................................................... 12

Figure 4 – Beam ................................................................................................................... 13

Figure 5 – Guiding block ....................................................................................................... 13

Figure 6 – Test arrangement, bending of the cable/wire ........................................................ 18

Figure 7 – Test arrangement, vibration ................................................................................. 19

Figure 8 – Non-accessible ID connection made with a stranded conductor ............................ 20

Figure 9 – Non-accessible ID connection made with a solid round conductor ........................ 20

Figure 10 – Test arrangement, contact resistance ................................................................. 21

Figure 11 – Basic test schedule (see 8.2) ............................................................................. 31

Figure 12 – Full test schedule (see 8.3) ................................................................................ 32

Figure A.1 – Example of a non-accessible ID connection with two conductors with

different cross-sections in one connection slot; wires with stranded conductors .................... 37

Figure B.1 – Examples of correct ID connections with closed housing design, opened

or visible by microsectioning ................................................................................................. 38

Figure B.2 – Parts of connector housings to ensure correct ID connections (examples) ........ 40

Figure B.3 – Mounting of wire bundles/cables with contacts having ID connections ............... 40

Figure B.4 – Bending of wire bundles of connectors .............................................................. 41

Figure B.5 – Mating and unmating of multipole connectors.................................................... 41

Figure B.6 – IDC: transversal microsection ........................................................................... 41

Table 1 – Vibration, preferred test severities ......................................................................... 19

Table 2 – Contact resistance of non-accessible ID connections, maximum permitted

values ................................................................................................................................... 22

Table 3 – Number of specimens required .............................................................................. 24

Table 4 – Qualification test schedule – Test group 1 ............................................................. 25

Table 5 – Qualification test schedule – Test group 2 ............................................................. 26

Table 6 – Qualification test schedule – Test group 3 ............................................................. 26

Table 7 – Qualification test schedule – Test group 4 ............................................................. 26

Table 8 – Qualification test schedule – Test group A ............................................................. 27

Table 9 – Qualification test schedule – Test group B ............................................................. 28

Table 10 – Qualification test schedule – Test group C .......................................................... 28

Table 11 – Qualification test schedule – Test group D .......................................................... 29

Table 12 – Qualification test schedule – Test group E ........................................................... 30

---------------------- Page: 6 ----------------------
IEC 60352-4:2020 © IEC 2020 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SOLDERLESS CONNECTIONS –
Part 4: Non-accessible insulation displacement (ID) connections –
General requirements, test methods and practical guidance
FOREWORD

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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

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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 60352-4 has been prepared by subcommittee 48B: Electrical

connectors, of IEC technical committee 48: Electrical connectors and mechanical structures

for electrical and electronic equipment.

This second edition cancels and replaces the first edition, published in 1994, and its

Amendment 1 (2000). This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) Transferred Clauses 9 to 13 into Annex A (informative).
b) The figures were re-drawn for clarity.
---------------------- Page: 7 ----------------------
– 6 – IEC 60352-4:2020 © IEC 2020
The text of this International Standard is based on the following documents:
FDIS Report on voting
48B/2804/FDIS 48B/2820/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 60352 series, published under the general title Solderless

connections, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 8 ----------------------
IEC 60352-4:2020 © IEC 2020 – 7 –
INTRODUCTION

The two following parts of IEC 60352 are available on solderless insulation displacement

connections:

– Part 3: Accessible insulation displacement (ID) connections – General requirements, test

methods and practical guidance;

– Part 4: Non-accessible insulation displacement (ID) connections – General requirements,

test methods and practical guidance.

NOTE In this document the term "insulation displacement" is abbreviated to "ID", for example "ID connection", "ID

termination".

Figure 1 illustrates examples of accessible and non-accessible insulation displacement

connections that clarify the difference among them.

Part 4 includes requirements and relevant tests (normative) as well as a practical guidance in

Annex A (informative) for non-accessible ID connections.
Two test schedules are provided:

– the basic test schedule which applies to insulation displacement connections which

conform to all prerequisites of Clause 5. It is derived from experience with successful

applications of such connections;

– the full test schedule which applies to insulation displacement connections which do not

fully conform to all prerequisites of Clause 5, for example which are manufactured using

materials or finishes not included in Clause 5.

This philosophy permits cost and time effective performance verification using a limited basic

test schedule for established insulation displacement connections and an expanded full test

schedule for connections requiring more extensive performance validation.

The suitability of the non-accessible ID connection implies that the specified requirements and

tests apply to all factors involved in producing a suitable ID connection, namely:

– the ID termination, which may be part of a single-pole or multipole connector;
– the wire (or range of wires) for which the termination is suitable;
– the tools (if any) required to produce that type of solderless connection.

The practical guidance provided in Annex A (informative) serves as a guideline for the

required workmanship. Attention is drawn to the fact that some industries (e.g. automotive,

aerospace, nuclear, military) may have specific workmanship standards and/or quality

requirements, which are outside the scope of this document.
Figure 1 – Example of accessible and non-accessible
insulation displacement connection
---------------------- Page: 9 ----------------------
– 8 – IEC 60352-4:2020 © IEC 2020

IEC Guide 109 advocates the need to minimise 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 document can have a negative

environmental impact.

As technological advances lead to acceptable alternatives for these materials, they will be

eliminated from the document.
---------------------- Page: 10 ----------------------
IEC 60352-4:2020
...

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