X530 Neutral Point Grounding - Siemens SINAMICS S120 Equipment Manual

4.6.3.5

X530 neutral point grounding

Table 4- 25
Connector
The Voltage Sensing Module is supplied with inserted jumper. When delivered, the neutral
point is connected to the protective conductor via the connector jumper. Current can flow to
PE. This connection is removed by removing the connector jumper. The measurement is
then electrically isolated.
Figure 4-16
When the Active Interface Module is operated on an ungrounded line system (IT system),
the connection clip must be removed, see "Electrical connection (Page 94)".
Note
Replacing a VSM10 Voltage Sensing Module
When replacing a Voltage Sensing Module VSM10 by one with a different article number,
then inform yourself about the applicable boundary conditions.
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9
Neutral point grounding X530
Terminal Designation
1 Neutral point of the
voltage sensing
2 Ground potential
Internal circuit of the VSM10 Voltage Sensing Module
Line-side power components
4.6 Active Interface Modules
Technical data
Jumper inserted: Grounded measurement
Jumper not inserted: isolated measurement
87