GE Industrial Solutions ProTrip Conversion Kits AK-15, AK-25, and AKU-25 - Manual (Page 16)

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SECTION 5. CONFIGURING THE TRIP
UNIT SECTION 6. FOUR-WIRE GROUND
FAULT OPTION
See DEH-40034 for detailed instructions for setting up
ProTrip trip units. The ground fault option for four-wire installations requires
the installation of an additional current sensor on the
neutral bus in the equipment. The sensor is connected to
the trip unit through the connector provided in the wiring
harness.
1. Mount the neutral sensor on the outgoing neutral
lead, normally in the bus or cable compartment in the
equipment. Figure 26 shows the outline of the neutral
sensor.
2. Connect the neutral sensor wire harness to the
correct taps on the sensor. To maintain the same
polarity as the phase sensors, connect the white wire
to the common terminal, black to the tap.
3. Route the wires through the equipment and connect
to the two-pin connector on the trip unit wiring
harness. The wires should be tied to the breaker
frame in an easily accessible location. It may be
located with the communication harness.
Figure 26. Neutral sensor outline.