9 Operation
Maschinenfabrik Reinhausen GmbH 2021 977817454/02 EN TAPCON
®
230 Expert
9.2.1.2.1 1-phase measurement
Circuit 1-A
▪ 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 1Ph phase voltage
Current-transformer circuit 1Ph phase current
Phase angle correction 0°
Table30: Circuit 1-A
Circuit 1-B
UL1
IL1
L1
L2
L3
N
VT
CT
UL1
IL1
IL2
IL3
UL3
UL2
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.