Siemens SIPROTEC 5 Series Hardware Description page 207

Humidity
Permissible humidity stress
(according to IEC 60068-2-30)
Constant humid heat, 56 days
Humid heat, cyclical
Other Environmental Information
Maximum altitude above sea level
Minimum admissible atmospheric pressure
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
≤ 75 % relative humidity on the annual average
Up to 93 % relative humidity on 56 days a year
Devices subjected to condensation are not to be oper-
ated!
Arrange the devices so that they are not exposed to
direct sunlight or extreme temperature changes. This
will prevent condensation in the device.
40 °C, 93 % relative humidity
12 h + 12 h cycles
25 °C/55 °C/95 % relative humidity
2000 m (6561.68 ft)
783.8 hPa
Technical Data
6.9 Environmental Conditions
207