7 Functions and settings
118 TAPCON® 230 basic 2117246/02 EN © Maschinenfabrik Reinhausen 2012
Circuit a (3 phase):
Figure 33 Circuit a - phase difference "0 3PH"
The voltage transformer VT is connected to the outer conductor L1 and
neutral N.
The current transformer CT is looped into the outer conductor L1.
The voltage V
L1
and current I
L1
are in phase.
The voltage drop on an outer conductor is determined by the current I
L1
.
Circuit b:
Figure 34 Circuit b - phase difference "0 3PH"
The voltage transformer VT is connected to the outer conductors L1 and
L2.
The current transformer CT
1
is looped into the outer conductor L1 and CT
2
into the outer conductor L2.
The current transformers CT
1
and CT
2
are connected crosswise in parallel
(total current = I
L1
+ I
L2
).
The total current I
L1
+ I
L2
and voltage V
L1/L2
are in phase.
The voltage drop on an outer conductor is determined by the current: (I
L1
+
I
L2
)/ 3.
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