Determines the ability of electrotechnical products to withstand the stresses occurring in a climate of high relative humidity, with or without condensation, with special regard to variations of electrical and mechanical characteristics. Provides guidance for Tests Ca (AS 1099.2.3), Cb (IEC 68-2-56), Db (IEC 68-2-30) and Z/AD (AS 1099.2Z/AD). The Standard is identical with and has been reproduced from IEC 68-2-28:1990.

This guide includes the necessary information for those experts who, when preparinga relevantspecification(e g. standards for components or equipment), have to select the appropriate tests and test severities for a particular product and possibly a given kind of application.The object of damp heat tests is to determine the ability of electrotechnical products to withstand the stresses occurring in a climate of high relative humidity, with or without condensation, with special regard to variations of electrical and mechanical characteristics. Damp heat tests may also be applied to check the resistance of a specimen to some forms of corrosion attack (see Sub-clause 8.31.This guide should be used together with the following parts of IEC Publication 63 which contain damp heat tests i.e.:68-2-3: Test Ca: Damp heat, steady state.68-2-56: Test Cb: Damp heat, steady state, primarily for equipment68-2-30: Test Db and guidance: Damp heat, cyclic (12 + 12-hour cycle).68-2-38: Test Z/AD: Composite temperature/humiditycyclic test.

First published as part of AS C333-1963.Revised and redesignated in part as AS 1099.1-1971.Revised and redesignated in part as AS 1099.3.3-1982.Revised and redesignated AS 1099.2.28-1994. First published as part of AS C333-1963. Revised and redesignated in part as AS 1099.1-1971. Revised and redesignated in part as AS 1099.3.3-1982. Revised and redesignated AS 1099.2.28-1994.