Factory
Switch
Setting Function
1
Disabled
Shunt trip activates Bell Alarm-
Alarm Only
2
Disabled
UVR
trip activates Bell Alarm-Alarm
Only
3
Enabled
Protection trip activates Bell Alarm-
Alarm Only
4
Disabled
Shunt trip activates Bell Alarm with
Lockout
5
Disabled
UVR
trip activates Bell Alarm with
Lockout
6
Enabled
Protection trip activates Bell Alarm
with Lockout
Table
3.
Accessory switch settings, including factory defaults.
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 trip (long-time, short-time,
instantaneous, ground-fault, or protective-relay)
occurs, the contacts of the Bell Alarm-Alarm Only
also change state. (The factory switch setting i s
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 trip (long-time, short-time,
instantaneous, ground-fault, or protective-relay)
occurs, the contacts of the Bell Alarm with Lockout
also change state. (The factory switch setting i s
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.
A VERTISSEMENT:
Avant
de
commencer
cette
procedure, mettre le disjoncteur en position OFF, le
deconnecter de toute tension d'alimentation, et
desarmer 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 #1 0-32 screws at the corner
of
t.he
breaker cover. Remove the cover from the breaker
face.
3.
Pull the Trip Unit locking lever to the right, then
hold the Trip Unit near the battery cover and li£:t
it straight out of the breaker.
4.
Refer to Figure 5 and Table 3 to det�rmine the
switches to be changed.
,
5.
Push in the appropriate "Enable" or
"Disable"
side of the switch.
6.
Confirm all switch settings before remstaiiing
the Trip Unit in the breaker.
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 #1 0-32 screws to 32 in-lb.
9.
Replace the trim plate and tighten the four #8-32
screws to 20 in-lb.
10.
Verify that the switch settings are correct by
inducing breaker trips from the Shunt Trip and
Undervoltage Release (if present) and checking
the responses of the Bell Alarm-Alarm Only and
Bell Alarm with Lockout accessories.
Test Procedure
Test the Shunt Trip for proper operation with the
following procedure.
I.
Turn off the power to the Shunt Trip.
2.
Close the breaker contacts.
3.
Apply at least 55% of the rated ac voltage
or
at least
75% of the rated de voltage to the Shunt Trip; the
breaker should trip immediately.
4.
If a Bell Alarm-Alarm Only or Bell Alarm with
Lockout is present, ensure that it activates (or does
not activate) as selected by the Mi.crcVersaTrip
Plus or MicroVersaTrip PM Trip
Uni.t.
If a Shunt Trip with Lockout has been installed,
continue with the following steps:
5.
After the breaker has tripped and with the power
still applied to the Shunt Trip with Lockout,
attempt to close the breaker. The brf'aker �hould
not close nor attempt to close.
6.
If a MicroVersaTrip Plus or MicroVersaTrip PM
Trip Unit is installed, check that the Trip Unit
display is active (powered).
7.
Remove power from the Shunt Trip with Lu,-::kout.
8.
Attempt to close the breaker; it should c�ose as
normal.
Trouble-Shooting
The following guide is provided for trouble-shooting
and isolating common problems. It does not cover
every possible situation. Contact the
ED&C
Customer
Support Center at 800-843-3742 if any problem is not
resolved by these procedures.
www
. ElectricalPartManuals
. com
