GE Industrial Solutions EntelliGuard 800–2000 A Frames, 240–600 Vac Maintenance Manual - Manual (Page 50)

EntelliGuard™ 800–2000 A Power Circuit Breakers
Chapter 8. Accessory Maintenance
40
Figure 48. Shunt Trip connections to the auxiliary switch and
secondary disconnect.
Figure 49. Shunt trip accessory kit.
Catalog
Number
Voltage
Rating
WPS1SF60120 120 Vac, 60 Hz
Table 7. Catalog number and operating voltage for the Shunt Trip
accessory.
Removing the Shunt Trip
Use the following procedure to remove the Shunt Trip
module for replacement, as illustrated in Figure 50. The
mounting bracket does not normally require replacement.
1. Carefully place the breaker on a suitable working
surface, resting on the primary disconnects, so that
the bottom of the breaker is accessible.
2. Disconnect the wire at the secondary disconnect
terminal 7. Disconnect the other wire from the
auxiliary switch, terminal 3C. Bring the wires back
to the Shunt Trip, removing wire ties as necessary.
3. Remove the two nuts and washers securing the
Shunt Trip module to the mounting bracket, then
remove the module.
Figure 50. Shunt Trip module removal and installation.
Installing the Shunt Trip
Use the following procedure to install the Shunt Trip
module as a replacement, as illustrated in Figure 50.
1. Insert the two mounting studs on the top of the
Shunt Trip module into the holes on the top of the
mounting bracket and secure with the two lock
washers and nuts supplied.
2. Run one wire from the Shunt Trip module to
auxiliary switch terminal 3C. Cut all wires to the
appropriate length and crimp on the terminals
provided (the right-angle flag for the auxiliary
switch, the spade terminal for the secondary
disconnect connection).
3. Attach the wires to the breaker frame with wire ties
as appropriate.
4. To verify that the Shunt Trip will trip the breaker,
place a 0.03-inch shim between the armature and
magnet of the Shunt Trip and manually operate the
armature to trip the breaker.
5. If the breaker does not trip in this test, verify that
the mounting fasteners are tight. If they are, bend
the trip paddle on the trip shaft to slightly reduce
the distance between the trip arm of the Shunt Trip
and the trip paddle and recheck for positive trip.
Verify that there is a 0.03–0.05-inch gap between the
trip arm and the trip paddle with the breaker
closed. A gap greater than 0.05 inch is allowable
and may sometimes be necessary to prevent nui-
sance tripping.
5
7
Aux Switch
3C
3
2
1
Shunt Trip