SECTION 1 4-MicroVersaTrip® Plus and MicroVersaTrip® PM Trip Units
FIG. 1 1 5
1 4.5 PHASE CURRENT SENSORS
The current sensors supply the power and signal input
necessary to operate the trip system Fig. 1 1 6 shows the
fixed phase sensors available. The sensors have a polar
ity associated with their windings. The common terminal
of the sensor is the right hand terminal. A white wire with
a push-on terminal will be connected to this common
terminal . All phase sensors must be correctly wired for the
programmer summing circuitry to function properly.
80
TAPPED
FIG. 1 1 6
The fixed phase sensors are available with an additional
winding. This winding is brought out to separate flag
terminals. These phase sensors are used when the hi
level instantaneous
(
' H'-option
)
is required. Fig. 1 1 7
shows an ' H ' -option phase sensor. When the 'H'-option
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
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