prEN IEC 60352-7:2024

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

Lötfreie Verbindungen - Teil 7: Federklemmverbindungen - Allgemeine Anforderungen, Prüfverfahren und Anwendungshinweise

Connexions sans soudure - Partie 7: Connexions à ressort - Exigences générales, méthodes d’essai et recommandations pratiques

Spoji brez spajke - 7. del: Objemka vzmetnih spojk - Splošne zahteve, preskusne metode in praktični napotki

General Information

• Status: Not Published
• Publication Date: 25-Jan-2026
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: CLC/SR 48B - Connectors
• Current Stage: 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
• Start Date: 27-Sep-2024
• Completion Date: 27-Sep-2024
• Ref Project: oSIST prEN IEC 60352-7:2024 - Solderless connections - Part 7: Spring clamp connections - General requirements, test methods and practical guidance

Relations

• Revises: EN IEC 60352-7:2021 - Solderless connections - Part 7: Spring clamp connections - General requirements, test methods and practical guidance
• Effective Date: 26-Sep-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2024
Spoji brez spajke - 7. del: Objemka vzmetnih spojk - Splošne zahteve, preskusne
metode in praktični napotki
Solderless connections - Part 7: Spring clamp connections - General requirements, test
methods and practical guidance
Lötfreie Verbindungen - Teil 7: Federklemmverbindungen - Allgemeine Anforderungen,
Prüfverfahren und Anwendungshinweise
Connexions sans soudure - Partie 7: Connexions à ressort - Règles générales,
méthodes d’essai et guide pratique
Ta slovenski standard je istoveten z: prEN IEC 60352-7:2024
ICS:
29.120.20 Spojni elementi Connecting devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

48B/3108/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60352-7 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-07-05 2024-09-27
SUPERSEDES DOCUMENTS:
48B/3069/CD, 48B/3095/CC
IEC SC 48B : ELECTRICAL CONNECTORS
SECRETARIAT: SECRETARY:
United States of America Mr Jeffrey Toran
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

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

PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it,
for any other purpose without permission in writing from IEC.

– 2 – IEC CDV 60352-7 Ed. 3 © IEC 2024

4 CONTENTS
6 FOREWORD . 5
7 INTRODUCTION . 7
8 1 Scope . 8
9 2 Normative references . 8
10 3 Terms and definitions . 9
11 4 Requirements . 12
12 4.1 Workmanship . 12
13 4.2 Tools . 12
14 5 Pre-requisites for basic test schedule . 13
15 5.1 Spring clamp terminations . 13
16 5.1.1 Materials . 13
17 5.1.2 Surface finishes . 13
18 5.1.3 Design features . 13
19 5.1.4 Dimensions . 13
20 5.2 Wires . 13
21 5.2.1 General . 13
22 5.2.2 Materials . 13
23 5.2.3 Dimensions . 13
24 5.2.4 Surface finishes . 13
25 5.2.5 Wire insulation . 14
26 5.3 Spring clamp connections . 14
27 6 Testing . 14
28 6.1 General . 14
29 6.2 Standard conditions for testing . 14
30 6.3 Preconditioning . 14
31 6.4 Recovery . 14
32 6.5 Mounting of specimen . 14
33 7 Tests . 15
34 7.1 General examination . 15
35 7.2 Mechanical tests . 15
36 7.2.1 Tensile strength . 15
37 7.2.2 Wire deflection . 15
38 7.2.3 Vibration . 18
39 7.2.4 Repeated connections and disconnections . 19
40 7.3 Electrical tests . 19
41 7.3.1 Contact resistance . 19
42 7.3.2 Electrical load and temperature . 21
43 7.4 Climatic tests . 21
44 7.4.1 General . 21
45 7.4.2 Rapid change of temperature . 21
46 7.4.3 Climatic sequence . 21
47 7.4.4 Flowing mixed gas corrosion test . 22
48 8 Test schedules . 22
49 8.1 General . 22
50 8.2 Basic test schedule . 23

– 3 – IEC CDV 60352-7 Ed.3 © IEC 2024

51 8.2.1 General . 23
52 8.2.2 Initial examination. 23
53 8.2.3 Testing of spring clamp connections with spring clamp terminations with
54 and without a specified wire range . 23
55 8.3 Full test schedule . 23
56 8.3.1 General . 23
57 8.3.2 Initial examination. 24
58 8.3.3 Testing of spring clamp connections with and without a specified wire
59 range . 24
60 8.4 Flow charts . 25
61 Annex A (informative) Practical guidance . 28
62 A.1 Current-carrying capacity . 28
63 A.2 Tool information . 28
64 A.3 Termination information . 28
65 A.3.1 General . 28
66 A.3.2 Design features . 28
67 A.3.3 Materials . 29
68 A.3.4 Surface finishes . 29
69 A.4 Wire information . 29
70 A.4.1 General . 29
71 A.4.2 Materials . 29
72 A.4.3 Surface finishes . 30
73 A.4.4 Stripping information. 30
74 A.5 Connection information . 31
75 Annex B (normative) Tests for resiliency in metallic parts to compensate for any
76 shrinkage or yielding of insulating material with regards to contact pressure
77 transmitted via insulating material (CoPI) . 32
78 B.1 Ageing test sequence for connections with contact pressure via insulating
79 material . 32
80 B.1.1 Cold storage (preconditioning step 1) . 33
81 B.1.2 Dry heat storage (preconditioning step 2) . 34
82 B.1.3 Current cycling ageing test procedure . 34
83 Bibliography . 36
85 Figure 1 – Examples of spring clamp connections . 11
86 Figure 2 – Example of a spring clamp terminal . 11
87 Figure 3 – Example of a spring clamp connecting device with CoPI . 12
88 Figure 4 – Information for the wire deflection test . 18
89 Figure 5 – Test arrangement, vibration . 18
90 Figure 6 – Test arrangement, current method . 20
91 Figure 7 – Basic test schedule (see 8.2) . 26
92 Figure 8 – Full test schedule (see 8.3) . 27
93 Figure A.1 – Correctly stripped wire . 30
94 Figure A.2 – Examples of stripping faults . 31
95 Figure B.1 – Examples of spring clamp terminal with contact pressure via insulating
96 material with solid (left) and flexible wire (right) . 32
97 Figure B.2 – Test sequence CoPI . 33
98 Figure B.3 – Test assembly for the voltage-drop measurement . 33
99 Figure B.4 – Current cycling ageing test procedure . 35
– 4 – IEC CDV 60352-7 Ed. 3 © IEC 2024

101 Table 1 – Values of tensile strength .
...