MR ECOTAP VPD CONTROL PRO - Page 85

8 Operation
Maschinenfabrik Reinhausen GmbH 2018 855252433/02 EN ECOTAP
®
VPD
®
CONTROL PRO
Circuit D
▪ The voltage transformer VT is connected to the phase conductors L1 and
L2.
▪ The current transformer CT is looped into the phase conductor L3.
▪ The current I
L3
is ahead of voltage U
L1
-V
L2
by 90°. This corresponds to a
phase shift of -90°.
▪ The voltage drop on a phase conductor is determined by the current I
L3
.
If you use this circuit, set the device as follows:
Parameter Option
Voltage-transformer circuit 3 Ph differential voltage
Current-transformer circuit 3 Ph phase current
Phase angle correction 90°
Table19: Circuit D
Circuit E
▪ The voltage transformer VT is connected to the phase conductors L1 and
L2.
▪ The current transformer CT is looped into the phase conductor L2.
▪ The current I
L2
is ahead of voltage U
L2
-U
L1
by 30°. This corresponds to a
phase shift of -30°.
▪ The voltage drop on a phase conductor is determined by the current I
L2
.