MR ETOS ED - Page 199

9 Visualization
Maschinenfabrik Reinhausen GmbH 2020 1996385142/08 EN ETOS
®
ED
9.18.2 Circuit examples for voltage transformers and current
transformers
Below you will find different examples of circuits for voltage transformers and
current transformers and the corresponding settings.
9.18.2.1 1-phase measurement
Circuit 1-A
UI
L1
N
VT
CT
UL1
IL1
L N k l
▪ The voltage transformer VT is connected to the phase conductor and neu-
tral 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:
Parameters Option
Voltage-transformer circuit 1 Ph phase voltage
Current-transformer circuit 1 Ph phase current
Phase angle correction 0°
Table49: 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