Storage - Siemens SIPROTEC 7SD600 System Manual

Numerical line differential protection SIPROTEC 7SD600 V3.0
9

Storage

The devices must be stored in dry, clean rooms. The
temperature range -25 to +55 _C (see chapter 3 un
der Technical data) applies for storing the device or its
spare modules.
The relative humidity may not cause condensation or
ice.
It is recommended to maintain a restricted tempera
ture range between +10 and +35 _C to prevent pre
mature ageing of the electrolytic capacitors used in
the power supply.
Siemens AG January 1999
System manual Order no. E50417-G1176-C069-A1
Approximately every two years, it is recommended to
connect the device to an auxiliary supply for 1 or 2
days to format the electrolytic capacitors used in the
power supply. This should also be done when it is
planned to use the device. This also has the effect of
"warming up" the device and avoiding moisture con
densation under extreme climatic conditions (tropical).
Before connecting the device to the power supply for
the first time, it should be placed in the control room
for at least 2 hours to balance the temperature and
avoid moisture and condensation.
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Storage
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