Storage - Siemens SIPROTEC 7SS60 Manual

Getting Started
3.4

Storage

3-8
If units or modules are to be stored, the following storage conditions should be ob-
served:
SIPROTEC devices and modules should be stored in dry and clean rooms. For stor-
age of devices, peripheral modules or related spare modules the applicable tempera-
ture range is between –25 °C and +55 °C (refer also to section 9.1 under Technical
Data).
It is recommended to limit the temperature range for storage to values between +10 °C
and +35 °C in order to avoid early ageing of the electrolytic capacitors in the power
supplies.
The relative humidity must not cause condensation or ice.
Furthermore it is recommended to connect the devices and modules to auxiliary volt-
age for about 1 or 2 days every two years, so that the electrolytic capacitors in the
power supplies are formatted. The same procedure should be followed before install-
ing these devices. In case of extreme climatic conditions (tropical), this pre-heats the
device and avoids condensation.
The units and modules 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 prevents dampness and condensation.
7SS60 Manual
E50417-G1176-C132-A2