9 Operation
Maschinenfabrik Reinhausen GmbH 2021
100
7817454/02 EN
TAPCON
®
230 Expert
If you use this circuit, set the device as follows:
Parameter
Option
Voltage-transformer circuit
3 Ph differential voltage
Current-transformer circuit
3 Ph phase current
Phase angle correction
30°
Table 34: Circuit 1-E
Circuit 1-F
I
L1
L1
L2
L3
VT
CT
U
L1
I
L1
I
L2
I
L3
U
L3
U
L2
U
L1
U
L1
-U
L2
-U
L2
UI
L
N
k
l
▪ The voltage transformer VT is connected to the phase conductors L1 and
L2.
▪ The current transformer CT is looped into the phase conductor L1.
▪ The current I
L1
lags behind voltage U
L1
-U
L2
by 30°. This corresponds to a
phase shift of +30° and a correction value of -30°.
▪ The voltage drop on a phase conductor is determined by the current I
L1
.
If you use this circuit, set the device as follows:
Parameter
Option
Voltage-transformer circuit
3 Ph differential voltage
Current-transformer circuit
3 Ph phase current
Phase angle correction
-30°
Table 35: Circuit 1-F
9.2.2 Voltage monitoring
In order to monitor the transformer's current output voltage, you can set
4 limit values:
▪ Undervoltage U<<: Lower limit 2
▪ Undervoltage U<: Lower limit 1
▪ Overvoltage U>: Upper limit 1
▪ Overvoltage U>>: Upper limit 2
