Getting Started
44
7SS52 V4 Manual
C53000-G1176-C182-3
3.7 Storage
If parts of the system are not used immediately, they can be stored after verification of
the rated data. The following storage conditions should be observed:
• SIPROTEC devices and associated assemblies should be stored in a dry and clean
place, For storage of devices or related spare modules the applicable temperature
range is between −25 °C and +70 °C (-13 °F to +158 °F) (Chapter 9.2.16, page
326).
• To avoid premature aging of the electrolyte capacitors in the power supply, a tem-
perature range of +10 °C to +35 °C (+50 °F to +95 °F) is recommended for storage.
• The relative humidity must not lead to condensation or ice buildup.
• If the system is to be stored for an extended period of time, the components (bay
units and central unit power supply unit) should be connected to auxiliary voltage
for one or two days approximately every two years to regenerate the electrolytic ca-
pacitors in the power supply. The same procedure should be followed before install-
ing these devices. Under extreme climatic conditions (tropics), preheating is
achieved at the same time, and condensation is prevented.
• The device should be in the final operating area for a minimum of two hours before
the power source is first applied. This time allows the device to attain temperature
equilibrium, and dampness and condensation to be avoided.
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