Siemens SIMEAS R-PMU Manual page 139

Enter the DAU Name consisting of max. 8 characters that is to be used for recording the
events of the DAU.
Select the connection mode from the drop-down menu of the Connection Mode [1/2] field
to define how the measuring signals are recorded locally, e. g., STAR. You can set separate
recording types for the first and the second group of measured values. This specification is
not possible with BDAU and DDAU modules.
The following reference values are valid for connecting the measuring signals:
Star
Delta
Monophase/1-phase Phase values
3-phase
Check the appropriate Calculate checkbox if you want to measure only three phases in star
connection and have the starpoint voltage V
The result of the vector additions:
is then shown as the 4th and/or 8th channel.
For CDAU modules, select from the drop-down menu of the Voltage Coupling box a
VCDAU or a VDAU to establish a link between VCDAU voltage channels and CDAU current
channels for power calculation. If a CDAU is coupled to a voltage channel, both reference
groups of the CDAU are always set either for three-phase or for single-phase measurement
depending on the voltage channel connection (star/3-phase or 1-phase).
Table 12-1
Voltage group
Star
Delta
Monophase
Star
Delta
Monophase
Activate the 180° phase shift for VCDAU, CDAU, VCDAU checkbox if you have
connected the voltage and current channels according to the SIMEAS R V2/V3
connection diagrams.
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
Phase-to-ground values
Phase-to-phase values
Phase currents
Settings of voltage and current groups for a VCDAU
Current group
3 phase
3 phase
1 phase
1 phase
1 phase
3 phase
or the starpoint current I
n
1
[ ]
= + +
V -- - V V V
n L1 L2 L3
3
Power calculation
yes
yes
yes
no
no
no
12
12.2 Configuration
calculated.
n
[ ]
= – + +
or I I I I
n L1 L2 L3
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