MR ETOS ED - Page 207

9 Visualization
Maschinenfabrik Reinhausen GmbH 2020 2076385142/08 EN ETOS
®
ED
▪ Three-phase voltage measurement, single-phase current measurement.
▪ The voltage transformers are connected between the phase and neutral
conductor.
▪ The current transformer is connected to phase L2.
Parameters Option
Voltage-transformer circuit 3 Ph phase voltage
Current-transformer circuit 3 Ph phase current
Phase angle correction -120°
UI measuring channels 3-ph. voltage, 1-ph. current
Measurement mode Phase-neutral
Table61: Circuit 3-G
Circuit 3-H
L1
L2
L3
N
UI
VTVT
VT
CT
L1 L2 L3 N k1 l1 k2 l2 k3 l3
▪ Three-phase voltage measurement, single-phase current measurement.
▪ The voltage transformers are connected between the phase and neutral
conductor.
▪ The current transformer is connected to phase L3.
Parameters Option
Voltage-transformer circuit 3 Ph phase voltage
Current-transformer circuit 3 Ph phase current
Phase angle correction 120°
UI measuring channels 3-ph. voltage, 1-ph. current
Measurement mode Phase-neutral
Table62: Circuit 3-H
9.18.2.3 Special applications
The following circuits (S-1, S-2, S-3 and S-4) describe special cases of cur-
rent measurement for hot-spot calculation on 3 different windings (e.g. three-
winding transformer or transformer with tertiary winding).