<cycled-hum-heat>
Basis: [Environmental Testings Part 2: Testing; Test Db;IEC 60068-2-30;; all;]
This test serves to prove the functioning of the device in changing humidity. Test temperatures, relative humidity and cycle duration are determined by the standard.
Figure 98: Structure of cycles of humidity and heat
Upper test temperature:
TPO Upper test temperature
ABS = 55 °C
Operating state above:
...
Lower test temperature:
TPU Lower test temperature
ABS = 25 °C
Operating state below:
...
Relative humidity:
FP Humidity below
ABS > 90 %
Cycle duration:
tZ Cycle duration
ABS = 24 h (12 h + 12 h)
Number of cycles:
9
Evaluation criteria:
...
Additional specifications
Figure 99: Example for cycles of humidity and heat