<temp-cycle>
[Environmental Testing Part2: Test Nb; Temperature change with determined rate of change;IEC 60068-2-14;;all;]
This test is described according to the standard.
Complex relations between operating states and dwell times can be documented as additional specifications.
Figure 87: Structure of temperature change test
Rate of change:
vT Rate of change
ABS = 4.167 K/min
Upper test temperature:
TPO Upper test temperature
ABS = 85 °C -2+0 K
Lower test temperature:
TPU Lower test temperature
ABS = -40 °C -0+2 K
Dwell time at upper temperature:
tPO Dwell time at upper temperature
ABS = 30 min +/- 1 min
Dwell time at lower temperature:
tPU Dwell time at lower temperature
ABS = 30 min +/- 1 min
Number of cycles:
500
Operating states:
2.1 tV Dwell time ABS = 1 h
3.3 tV Dwell time ABS = 1 h
Evaluation criteria:
...
Additional specifications
Figure 88: Example for temperature change test