Environmental Conditions
Temperatures
Type test, in operation
(in compliance with IEC 60068-2-1 and
IEC 60068-2-2, test Ad for 16 h and test Bd
-25 °C to +85 °C
Recommended for uninterrupted duty
(in compliance with IEC 60255-1)
-10 °C to +55 °C
Temperatures for continuous storage -25 °C to +55 °C
Type test, transport and storage for 96 h -40 °C to +70 °C
Humidity
Permissible humidity stress
(according to IEC 60068-2-30)
≤ 75 % relative humidity on the annual average
Up to 93 % relative humidity
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.
Constant humid heat, 56 days 40 °C, 93 % relative humidity
Humid heat, cyclical 12 h + 12 h cycles
25 °C / 55 °C / 95 % relative humidity
Other Environmental Information
Maximum altitude above sea level
2000 m (6561.68 ft)
Minimum admissible atmospheric pressure 783.8 hPa
3.7
3.7.1
3.7.2
3.7.3
7XR86 Voltage Divider (5:1, 5:2)
3.7 Environmental Conditions
44 SIPROTEC, Coupling Units for Generator Protection, Manual
C53000-H5040-C072-1, Edition 09.2018
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