GE AKR-30 Series Maintenance Manual page 158

SECTION 1 4-MicroVersaTrip® Plus a nd M icro Versa Trip® PM Trip Units
FIG. 1 1 5
1 4.5 PHASE C U RRENT SENSORS
The current sensors supply the power and sig nal i n put
necessary to operate the trip system Fig. 1 1 6 shows the
fixed phase sensors available. The sensors have a po
ity associated with their windings. The com � on t � rm1 � al
of the sensor is the right hand term inal. A wh 1te w1re With
a push-on term inal will be connected to thi � common
terminal. All phase sensors m ust be correctly w1red for the
programmer summing circuitry to function properly.
80
TAPPED
The fixed phase sensors are available with an additional
winding. This winding is brought out to separate fla �
term inals. These phase sensors are used when the hi­
�
level instantaneous ('H' -option) is required .
ar­
shows an ' H ' -option phase sensor. When the ' H ' -o ption
phase sensor is installed, there are four leads connected
to it. There is no polarity associated with the ' H ' -option
windings.
FIG. 1 1 7 'H'-OPTION PHASE SENSOR
COMMON
TERM I NAL
FIG. 1 1 6
Fig. 1 1 7