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9 Operation
Maschinenfabrik Reinhausen GmbH 2021
97
7817454/02 EN
TAPCON
®
230 Expert
9.2.1.2.1 1-phase measurement
Circuit 1-A
UI
L1
N
VT
CT
U
L1
I
L1
L
N
k
l
▪ The voltage transformer VT is connected to the phase conductor and the
neutral conductor.
▪ The current transformer CT is looped into the phase conductor.
▪ The voltage U
L1
and current I
L1
are in phase.
▪ 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
1 Ph phase voltage
Current-transformer circuit
1 Ph phase current
Phase angle correction
0°
Table 30: Circuit 1-A
Circuit 1-B
U
L1
I
L1
L1
L2
L3
N
VT
CT
U
L1
I
L1
I
L2
I
L3
U
L3
U
L2
UI
L
N
k
l
▪ The voltage transformer VT is connected to the phase conductor L1 and
the neutral conductor.
▪ The current transformer CT is looped into the phase conductor L1.