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Description of Switch Settings
Following are descriptions of the effects of each accessory switch
when it is enabled:
1. When a Shunt Trip accessory causes the breaker to trip,
the contacts of the Bell Alarm–Alarm Only also change
state. (The factory switch setting is disabled.)
2. When an Undervoltage Release accessory causes the
breaker to trip, the contacts of the Bell Alarm–Alarm Only
also change state. (The factory switch setting is disabled.)
3. When
a
protection
instantaneous, ground-fault, or protective-relay) occurs,
the contacts of the Bell Alarm–Alarm Only also change
state. (The factory switch setting is enabled.)
4. When a Shunt Trip accessory causes the breaker to trip,
the contacts of the Bell Alarm with Lockout also change
state. (The factory switch setting is disabled.)
5. When an Undervoltage Release accessory causes the
breaker to trip, the contacts of the Bell Alarm with
Lockout also change state. (The factory switch setting is
disabled.)
6. When
a
protection
instantaneous, ground-fault, or protective-relay) occurs,
the contacts of the Bell Alarm with Lockout also change
state. (The factory switch setting is enabled.)
Procedure for Changing Switch Settings
Change the accessory switch settings with the following
procedure:
WARNING: Before beginning this procedure, turn the breaker
off, disconnect it from all voltage sources, and discharge the
closing springs.
AVERTISSEMENT: Avant de commencer cette procédure,
mettre le disjoncteur en position OFF, le déconnecter de toute
tension d'alimentation, et désarmer les ressorts de fermeture.
1. Loosen the four #8-32 screws on the breaker trim-plate
assembly and remove the trim plate.
2. Loosen the four #10-32 screws at the corner of the breaker
cover. Remove the cover from t h e breaker face.
3. Pull the Trip Unit locking lever to the right, then hold the
Trip Unit near the battery cover and lift it straight out of
the breaker.
4. Refer to Figure 4 and Table 2 to determine the switches
to be changed.
5. Push in the appropriate "Enable" or "Disable" side of the
switch.
6. Confirm all switch settings before reinstalling the Trip
Unit in the breaker.
Courtesy of store.ips.us
trip
(long-time,
short-time,
trip
(long-time,
short-time,
7. Pull the Trip Unit locking lever to the right. While
holding the lever, carefully align the connector on the rear
of the Trip Unit with the connector in the breaker. Press
down on the Trip Unit, while holding it near the battery
cover. When the Trip Unit is fully seated, slide the locking
lever back to the left.
8. Reinstall the breaker top cover and tighten the four #10-
32 screws to 32 in-lbs.
9. Replace the trim plate and tighten the four #8-32 screws
to 20 in-lbs.
10. Verify that the switch settings are correct by inducing
breaker trips from the UVR and Shunt Trip or Shunt Trip
with Lockout (if present) and checking the responses of
the Bell Alarm–Alarm Only and Bell Alarm with Lockout
accessories.
Test Procedure
Use the following procedure to test the UVR for proper
operation.
1. Open the breaker.
2. Turn off the power to the UVR.
3. Try to manually close the breaker; the breaker should not
close.
4. Apply at least 80% of the rated voltage specified on the
UVR name plate to the UVR control inputs.
5. Try to close the breaker; it should close as normal.
6. If a MicroVersaTrip Plus or MicroVersaTrip PM Trip
Unit is installed, check that the Trip Unit display is active
(powered).
7. With the breaker closed, reduce the UVR control voltage to
35–60% of the rated voltage; the breaker should trip
within 0.5 second.
8. If a Bell Alarm–Alarm Only or Bell Alarm with Lockout is
present, ensure that they activate (or do not activate) as
selected by the MicroVersaTrip Plus or MicroVersaTrip
PM Trip Unit DIP switches.
Trouble-Shooting
The following guide is provided for trouble-shooting and
isolating common problems. It does not c over every possible
situation. Contact the ED&C Customer Support Center at 800-
843-3742 if any problem is not resolved by these procedures.
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