11.1.4
Environmental Tests
Classication
IEC 60068-1 Climatic Classication 20/060/56
IEC 60721-3-1 Classication of ambient conditions
(Storage)
1K5/1B1/1C1L/1S1/1M2 but
min. −30°C (−22°F)
IEC 60721-3-2 Classication of ambient conditions
(Transportation)
2K2/2B1/2C1/2S1/2M2 but
min. −30°C (−22°F)
IEC 60721-3-3 Classication of ambient conditions
(Stationary use at weather protected
locations)
3K6/3B1/3C1/3S1/3M2 but
min. −20°C (−4°F) / max
60°C (140°F)
Test Ad: Cold
IEC 60068-2-1
IEC 60255-27
Temperature −20°C (−4°F)
Test duration 16 h
Test Bd: Dry Heat
IEC 60068-2-2
IEC 60255-27
Temperature 60°C (140°F)
Relative humidity <50%
Test duration 72 h
Test Cab: Damp Heat (Steady State)
IEC 60068-2-78
IEC 60255-27
Temperature 60°C (140°F)
Relative humidity 95%
Test duration 56 days
Test Db: Damp Heat (Cyclic)
IEC 60068-2-30
IEC 60255-27
Temperature 60°C (140°F)
Relative humidity 95%
Cycles (12 + 12-hour) 2
Test Nb: Temperature Change
IEC 60068-2-14 Temperature 60°C/-20°C
cycle 5
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11 Appendix
11.1 Standards