scope:

Scope and object

This Standard deals with cold tests applicable to both non heat-dissipating and heatdissipating specimens. For non heat-dissipating specimens, Tests Ab and Ad do not deviate essentially from earlier issues. Test Ae has been added primarily for testing equipment that requires being operational throughout the test, including the conditioning periods.

NOTE 1 Existing Tests Aa and Tests Ac have been withdrawn.

The object of the cold test is limited to the determination of the ability of components, equipment or other articles to be used, transported or stored at low temperature.

NOTE 2 This test is not intended for endurance test nor reliability test.

Cold tests cover by this Standard do not enable the ability of specimens to withstand or operate during the temperature variations to be assessed. In this case, it would be necessary to use JIS C 0025.

The cold tests are subdivided as follows:

- Cold tests for non heat-dissipating specimens with gradual change of temperature, Ab;

- Cold test for heat-dissipating specimens with gradual change of temperature, specimen powered after reaching initial temperature stability, Ad;

- Cold test for heat-dissipating specimens with gradual change of temperature, specimen powered throughout, Ae.

The procedures given in this Standard are normally intended for specimens that achieve temperature stability during the performance of the test procedure.

NOTE 3 The International Standard corresponding to this Standard is as follows.

IEC 60068-2-1 :2007 Environmental testing-Part 2-1: Tests-Test A: Cold (IDT)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.