6 Functions and settings
Maschinenfabrik Reinhausen GmbH 2016
101
5163667/00 EN
TRAFOGUARD® ISM®
Parameter
Option
Voltage-transformer circuit
3 Ph differential voltage
Current-transformer circuit
3 Ph phase current
Phase angle correction
30°
Table 18: Circuit E
Circuit F
▪
The voltage transformer VT is connected to the phase conductors L1
and L2.
▪
The current transformer CT is looped into the phase conductor L1.
▪
The current I
L1
lags behind U
L1
-U
L2
by 30°. This corresponds to a phase
shift of -30°.
▪
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
3 Ph differential voltage
Current-transformer circuit
3 Ph phase current
Phase angle correction
-30°
Table 19: Circuit F
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