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IEC 60664 Part 3, 2016 Released for Assembly Protection Against Pollution

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The International Electrotechnical Commission (IEC) has released IEC 60664-3:2016. This standard pertains to Insulation coordination for equipment within low-voltage systems – Part 3: Use of coating, potting or moulding for protection against pollution and is now available on the IEC webstore.

Description: “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:

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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 horizontal standard in accordance with IEC Guide 104 .

*Description from the IEC Website.

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