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Siemens 7SR45 - Earthing and Connecting Devices

Siemens 7SR45
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Earthing and Connecting Devices
Earthing the Devices
!
DANGER
Danger due to device being improperly earthed
Incomplete and careless earthing leads to death, severe injury, and considerable material damage!
²
The device must be situated in the operating area for at least 2 hours before you connect it to the
power supply for the first time. This prevents condensation from forming in the device.
²
If the device has been in storage for more than 2 years, connect it to an auxiliary voltage for 1 to 2
days. This will cause the electrolytic capacitors to form on the printed circuit board assemblies.
²
Wire the earthing cable using a non-stranded cable with a cross-section of 2.5 mm
2
/4 mm
2
.
Terminate the wire in the shortest possible path to the earthing terminal or busbar in the panel or
cubicle.
Connecting Devices
²
Connect all cables and leads. Use the connection diagrams in the Hardware and Device manuals.
²
Tighten the terminal screws to the prescribed torques.
2.4
Installing the Device
2.4 Earthing and Connecting Devices
Reyrolle, Operating, Manual 25
C53000-B7040-C101-1, Edition 08.2020

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