Electrical Inspection - Siemens 7SR45 Manual

1.3

Electrical Inspection

Device Protection
!
DANGER
Danger when connecting the device.
Noncompliance with the safety notes will result in death, severe injury or considerable material
damage.
The device must be situated in the operating area for at least 2 hours before you connect it to the
²
power supply for the first time. This prevents condensation from forming in the device.
If the device has been in storage for more than 2 years, connect it to an auxiliary voltage for 1 to 2
²
days. This will cause the electrolytic capacitors on the printed circuit-board assemblies to form again
(applicable for auxiliary-powered variants only)
Perform the electrical inspection.
²
Activating the Battery
Unscrew and open the battery compartment.
²
To activate the battery, remove the protective paper strip from the battery by simply pulling on the paper
²
strip.
Push the battery compartment including the battery back in again and screw it to the housing.
²
NOTE
i
i
The battery is covered by a paper strip, which prevents premature discharge.
The battery compartment is located on the front of the device. You do not have to take the battery out of
the compartment in order to remove the paper strip.
Earthing a Device
The 7SR45 devices are protection class III equipment. The devices must be connected with the system earth
prior to commissioning.
² The earth cable must be wired using a non-stranded cable with a cross section of 2.5 mm
this must be terminated in the shortest possible path to the earth terminal/busbar in the panel or cubicle.
Connecting a Device
Connect the device as per the connection diagrams mentioned in the device manual.
²
Tighten the terminal screws to the prescribed torques (see chapter
²
Reyrolle, Operating, Manual
C53000-B7040-C101-1, Edition 08.2020
1.3 Electrical Inspection
2 /4 mm
2.5 Terminal Lugs Specification).
First Steps
2 and
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