9 Visualization
Maschinenfabrik Reinhausen GmbH 2020
163
4453918/14 EN
ETOS
®
TD
9.17.2 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.
9.17.2.1 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 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:
Parameter
Option
Voltage-transformer circuit
1 Ph phase voltage
Current-transformer circuit
1 Ph phase current
Phase angle correction
0°
Table 43: 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
Summary of Contents for ETOS TD
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