Electrical Connection - Siemens SINAMICS S120 Equipment Manual

Line-Side Power Components
2.3 Active Interface Modules
2.3.5

Electrical connection

The Active Interface Module is electrically connected in accordance with the sample
connections shown in section 2.3.3.2.
Operating an Active Interface Module on an isolated-neutral 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.: "1" in Fig. 2-12).
The interface overview in section 2.3.3.1 shows the position of the connection bracket on the
different frame sizes.
With devices of frame size HI and JI, two connection brackets must be removed.
Fig. 2-12
Warning
Failing to remove the connection bracket for the interference-suppression capacitor on a
non-grounded system/IT system can cause significant damage to the unit.
2-20
Removing the connection bracket to the noise suppression capacitor (example: frame
size JI)
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Chassis Power Units Liquid Cooled