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Normas BSI – AENOR
BS EN 60664-3:2017 - TC

BS EN 60664-3:2017 - TC

Tracked Changes. Insulation coordination for equipment within low-voltage systems. Use of coating, potting or moulding for protection against pollution

2020-02-25 /Definitive
IEC 60664-3:2016(E) is available as IEC 60664-3:2016 RLV 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 IEC Guide 104
Electric conductors, Leakage paths, Clearances, Printed-circuit boards, Printed circuits, Pollution, Environmental testing, Insulating coatings, Electrical equipment, Low-voltage equipment, Coordination, Dimensions, Solid electrical insulating materials, Electrical insulating materials, Electrical insulation
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