Siemens SIPROTEC 4 7XT71 Mode D'emploi page 39

12.2.6 Climatic Stress Tests
Temperatures
Standards:
Recommended temperature during operation
Rated auxiliary voltage +15 %
Rated auxiliary voltage +10 %
Limit temperatures
for storage
for transport
Storage and transport with factory packaging
Humidity
Permissible humidity
Siemens recommends that all devices be installed such that they are not exposed
to direct sunlight, nor subject to large fluctuations in temperature that may cause
condensation.
SIPROTEC 4, Injection Unit 7XT71, Product Information
C53000-B1175-C128-1, Edition 01.2014
IEC 60255-6
–5 °C to +40 °C
–5 °C to +55 °C
–25 °C to +55 °C
–25 °C to +70 °C
Mean value per year ≤ 75 % relative hu-
midity;
on 56 days of the year up to 95 % relative
humidity; condensation must be avoided!
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