The voltage transformed internally into square wave signal
so that special requirements must met, except the required minimum value and synchronicity
with the voltage.
Ipos
U
S
Row
analog
Inputs
8
8
8
z
b
d
R
22
20
U
0
L1
N
24
26
3
U
ne
100V
U
H
230
VAC
n
e
Imax
Imin
Pot
+
Pot
-
Figure 14: Cabling suggestion for Usync with auxiliary voltage 230 VAC
CAUTION
The right hardware version required wire the synchronization input with 230 VAC. The line-to-line voltage U12, for example, can used the synchronization volt-
age. This auxiliary voltage usually enough to
supply the regulator. Other voltages, that are least grid-synchronized and not affected single pole-to-earth fault,
can also used. few calculation methods use these quantities
for regulation purpose.
This information displayed the regulator's status screen pressing <Menu>, <F3>,
<F5>, <F1>, <F5>:
MeasHW: NTZ2 230. The input for the synchronization designed for nominal voltage 230 VAC
but voltage VAC also sufficient. This synchronization voltage synchronizes internal phase-locked loop (PLL),
hence interruptions the synchronization voltage the seconds range have effect, for example,
when switching the internal transformer another busbar.
To adjust the P-coil, the regulator usually needs auxiliary voltage 230 VAC the P-coil's motor
drive unit. The regulator cannot adjust the P-coil fails.2 Connecting the synchronization voltage
The synchronization voltage Usync used reference voltage, when measuring the phase angle for
both zero sequence voltage Une and currents and I2.
U
0
auxilliary supply
AC DC
L(+)
L(-)
28 30
3
Pin-Nr.
spring bar Nr.Page Connecting the measurands the REG-DP
We take care it. The regulator's data and parameters are buffered and not get lost, which why
it possible use the auxiliary voltage synchronization voltage.
8. When used system with mul-
tiple busbar connectors, the advantage that synchronization voltage always available, irrespective
of the switching state
