BS EN 60664-3:2017 – TC:2020 Edition
$186.33
Tracked Changes. Insulation coordination for equipment within low-voltage systems – Use of coating, potting or moulding for protection against pollution
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 70 |
IEC 60664-3:2016(E) is available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60664-3:2016 applies to assemblies protected against pollution by the use of coating, potting or moulding, thus allowing a reduction of clearance and creepage distances as described in IEC 60664-1. This document describes the requirements and test procedures for two methods of protection: – type 1 protection improves the microenvironment of the parts under the protection; – type 2 protection is considered to be similar to solid insulation. This edition includes the following significant technical changes with respect to the previous edition: a) information added concerning interpolation; b) provided scratch test is only for type 2 protection; c) renumbered the scratch test to follow the visual examination test, since it makes more sense there; d) separated the tables under what is now called Annex A, to make them clearer. It has the status of a basic safety publication in accordance with /2
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 40 | National foreword |
| 45 | English CONTENTS |
| 47 | FOREWORD |
| 49 | INTRODUCTION |
| 50 | 1 Scope 2 Normative references |
| 51 | 3 Terms and definitions |
| 52 | 4 Design requirements 4.1 Principles 4.2 Application range with regards to the environment |
| 53 | 4.3 Requirements for the types of protection 4.4 Dimensioning procedures Tables Table 1 – Minimum spacings for type 2 protection |
| 54 | 5 Tests 5.1 General 5.2 Specimens for testing coatings |
| 55 | 5.3 Specimens for testing mouldings and potting 5.4 Preparation of test specimens 5.5 Visual examination 5.6 Scratch-resistance test |
| 56 | 5.7 Conditioning of the test specimens 5.7.1 General 5.7.2 Cold conditioning 5.7.3 Dry-heat conditioning Figures Figure 1 – Scratch-resistance test for protecting layers |
| 57 | 5.7.4 Rapid change of temperature Table 2 – Dry-heat conditioning Table 3 – Degrees of severities for rapid change of temperature |
| 58 | 5.7.5 Damp heat, steady-state with polarizing voltage 5.8 Mechanical and electrical tests after conditioning and electromigration 5.8.1 General test conditions 5.8.2 Adhesion of coating |
| 59 | 5.8.3 Insulation resistance between conductors 5.8.4 Voltage test 5.8.5 Partial discharge extinction voltage 5.9 Additional tests 5.9.1 General |
| 60 | 5.9.2 Resistance to soldering heat 5.9.3 Flammability 5.9.4 Solvent resistance |
| 61 | Annex A (normative)Test sequences Table A.1 – Test sequence 1 |
| 62 | Table A.2 – Test sequence 2 additional conditioning with respect to electromigration Table A.3 – Additional tests |
| 63 | Annex B (normative)Decisions to be taken by the technical committees B.1 General B.2 Decisions required by technical committees B.3 Optional test conditions |
| 64 | Annex C (normative)Printed wiring board for testing coatings C.1 General C.2 Specification of the printed wiring board C.3 Arrangement of the conductors |
| 65 | C.4 Arrangement of lands C.5 Connections for the tests |
| 66 | Figure C.1 – Configuration of the test specimen |
| 67 | Figure C.2 – Configuration of landsand adjacent conductors |
| 68 | Bibliography |
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BS EN 60664-3:2017
Insulation coordination for equipment within low-voltage systems – Use of coating, potting or moulding for…
