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BS EN IEC 60352-7:2021

BS EN IEC 60352-7:2021

$167.15

Solderless connections – Spring clamp connections. General requirements, test methods and practical guidance

Published By Publication Date Number of Pages
BSI 2021 36
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IEC 60352-7:2020 is available as IEC 60352-7:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60352-7:2020 is applicable to spring clamp connections made with stripped wire without further preparation: – solid conductors of 0,32 mm to 3,7 mm nominal diameter (0,08 mm2 to 10 mm2 cross?section), or – stranded conductors of 0,08 mm2 to 10 mm2 cross-section, or – flexible conductors of 0,08 mm2 to 10 mm2 cross-section, according to IEC 60228 or IEC 60189-3 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. The object of this document is to determine the suitability of spring clamp connections under specified mechanical, electrical and atmospheric conditions. This second edition cancels and replaces the first edition of IEC 60352-7, published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) correction of the two flow charts in Figure 6 and Figure 7, b) split the content into more clauses for better separation between full test schedule and basic test schedule, c) relocating the content of former Clause 6 Practical guidance into an informative Annex A, as now common in the IEC 60352 series for solderless connections, d) clarification on conductor types with reference to classes defined in IEC 60228.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
13 3 Terms and definitions
14 Figures
Figure 1 ā€“ Examples of spring clamp connections
15 4 Requirements
4.1 Workmanship
4.2 Tools
5 Pre-requisites for basic test schedule
5.1 Spring clamp terminations
5.1.1 Materials
Figure 2 ā€“ Example of a spring clamp terminal
16 5.1.2 Surface finishes
5.1.3 Design features
5.1.4 Dimensions
5.2 Wires
5.2.1 General
5.2.2 Materials
5.2.3 Dimensions
5.2.4 Surface finishes
17 5.2.5 Wire insulation
5.3 Spring clamp connections
6 Testing
6.1 General
6.2 Standard conditions for testing
6.3 Preconditioning
6.4 Recovery
6.5 Mounting of specimen
18 7 Tests
7.1 General examination
7.2 Mechanical tests
7.2.1 Tensile strength
7.2.2 Wire deflection
Tables
Table 1 ā€“ Values of tensile strength
20 Table 2 ā€“ Value of force for wire deflection test
21 7.2.3 Vibration
Figure 3 ā€“ Information for the wire deflection test
22 7.2.4 Repeated connections and disconnections
Figure 4 ā€“ Test arrangement, vibration
Table 3 ā€“ Vibration, test severities
23 7.3 Electrical tests
7.3.1 Contact resistance
Figure 5 ā€“ Test arrangement, current method
24 7.3.2 Electrical load and temperature
7.4 Climatic tests
7.4.1 General
7.4.2 Rapid change of temperature
7.4.3 Climatic sequence
Table 4 ā€“ Rated current of the wires, initial and final contact resistance
25 7.4.4 Flowing mixed gas corrosion test
8 Test schedules
8.1 General
26 8.2 Basic test schedule
8.2.1 General
8.2.2 Initial examination
8.2.3 Testing of spring clamp connections with spring clamp terminations with and without a specified wire range
Table 5 ā€“ Number of specimens required
Table 6 ā€“ Test group P1
27 8.3 Full test schedule
8.3.1 General
8.3.2 Initial examination
8.3.3 Testing of spring clamp connections with and without a specified wire range
Table 7 ā€“ Test group P2
Table 8 ā€“ Test group A
28 8.4 Flow charts
Table 9 ā€“ Test group B
Table 10 ā€“ Test group C
Table 11 ā€“ Test group D
29 Figure 6 ā€“ Basic test schedule (see 8.2)
30 Figure 7 ā€“ Full test schedule (see 8.3)
31 Annex A (informative) Practical guidance
A.1 Current-carrying capacity
A.2 Tool information
A.3 Termination information
A.3.1 General
A.3.2 Design features
32 A.3.3 Materials
A.3.4 Surface finishes
A.4 Wire information
A.4.1 General
33 A.4.2 Materials
A.4.3 Surface finishes
A.4.4 Stripping information
Figure A.1 ā€“ Correctly stripped wire
34 A.5 Connection information
Figure A.2 ā€“ Examples of stripping faults
35 Bibliography

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