Earthing And Connecting Devices - Siemens 7SR45 Manual

2.4

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!
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 to form on the printed circuit board assemblies.
Wire the earthing cable using a non-stranded cable with a cross-section of 2.5 mm
²
Terminate the wire in the shortest possible path to the earthing terminal or busbar in the panel or
cubicle.
Connecting Devices
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
Reyrolle, Operating, Manual
C53000-B7040-C101-1, Edition 08.2020
Installing the Device

2.4 Earthing and Connecting Devices

2 /4 mm 2 .
25