Electrical Connection - Siemens SINAMICS S120 Equipment Manual

3.3.5

Electrical connection

Operating a Smart Line Module from an insulated network (IT system)
When the device is operated on an isolated-neutral network (IT system), the connection
bracket to the noise suppression capacitor must be removed (e.g.: see "1" in figure below).
The interface overview in the section "Interface description" shows the position of the
connection bracket on the different frame sizes.
With frame sizes HX and JX, you must remove the left-hand fan before removing the
connection bracket (see "Replacing components").
Figure 3-17 Removing the connection bracket to the noise suppression capacitor (example: Frame size JX)
Failing to remove the connection bracket for the noise suppression capacitor on a non-
grounded system/IT system can cause significant damage to the unit.
Chassis power units
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
WARNING
Connection bracket for the interference-suppression
capacitor
(behind the fan)
Line Modules
3.3 Smart Line Modules
107