Electrical Connection - Siemens SINAMICS S120 Equipment Manual

5.3.5

Electrical connection

Operating a Smart Line Module on a non-grounded line supply (IT system)
When the device is operated on an ungrounded line supply (IT system), the integrated basic
interference suppression modules must be deactivated by screwing out a connection clip.
Note
Warning label on the connection clip
A yellow warning label is attached to each connection clip so that it is easier to find.
• The warning label must be removed from the connection clip (by pulling it off) if the
connection clip is to remain in the unit (operation on a grounded line supply).
• The warning label must be removed together with the connection clip if the unit is
operated on a non-grounded line supply (IT system).
Figure 5-21
With frame sizes HX and JX, you must remove the left-hand fan before removing the
connection clip (see "Replacing components").
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9
Warning label on the connection clip
Line Modules
5.3 Smart Line Modules
175