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2.14 Storage
During storage, a temperature range between +10 °C and
+35 °C is recommended in order to prevent premature
aging of components, particularly the electrolytic capacitors.
For longer storage periods, it is recommended that voltage
be applied to the device power supply for one or two days
every other year, in order to regenerate the electrolytic
capacitors. The same is valid before the device is finally
installed.
2.15 Electrical Connection
WARNING!
Some of the following steps are carried out in the presence of
hazardous voltages. They must be performed only by qualified
personnel who are thoroughly familiar with safety regulations
and precautionary measures; and pay due attention to them.
During electrical installation, all rules and regulations
for power systems must be observed.
• If current transformers are used, the secondary connec-
tions of the current transformers must be short-circuited
before the current leads to the device are interrupted.
• The protective ground terminal of the device must be
connected to the protective ground of the panel or cu-
bicle.
• For connection of an auxiliary DC voltage, the correct
polarity must be used.
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