IEC 60068-2-33 1st Edition, 1971
BASIC ENVIRONMENTAL TESTING PROCEDURES PART 2: TEST GUIDANCE ON CHANGE OF TEMPERATURE TESTS * SEE ALSO IEC 60068 SET *** SAME AS BS 2011 P2.2N***
Includes all amendments and changes through Amendment 1, January 1978
Additional Comments: BILINGUAL * W/D S/S BY IEC 60068-2-14
Published By:International Electrotechnical Commission (IEC)
This Recommendation gives guidance to designers and testing personnel on the specification and use of change of temperature tests.
A change of temperature test is intended to determine the effect on the specimen of a change of temperature or a succession of changes of temperature.
It is not intended to show effects which are due only to the high or low temperature. For these effects, the dry heat test or the cold test should be used.
The effect of such tests is determined by :
- values of high and low conditioning temperature between which the change is to be effected ;
- the conditioning times for which the test specimen is kept at these temperatures ; - the rate of change between these temperatures ;
- the number of cycles of conditioning ;
- the amount of heat transfer into or from the specimen.