GE Industrial Solutions Power Break II Undervoltage Release 480 & 600 Vac - Manual (Page 4)

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.
Symptom Possible Cause Corrective Action
1. The UVR accessory will
not insert completely in
the breaker. The accessory is inserted
incorrectly. Ensure that the accessory is inserted in the correct slot, as
in Figure 2, and that the label is upright. Ensure that the
accessory is completely seated and that the screw is
tightened.
2. The breaker closes when
the UVR is de-energized. The UVR lockout plunger is not
engaged.
The UVR is actually energized.
Remove the UVR accessory. Check that the lockout
plunger protrudes approximately
1 ⁄ 4 inch out of the
accessory; if it does not, replace the UVR. If the plunger
length is correct, reinsert the UVR, ensuring good
alignment of the accessory to the pocket. Ensure that it is
completely seated, flush with the top of the pocket, then
tighten the screw to 9 in-lb.
Check that the control power to the UVR is off.
3. The breaker will not close
when the UVR is
energized. The UVR solenoid is not
energized.
The transformer connections are
incorrect.
Check that UVR control power is applied at greater than
80% of the UVR rated voltage. Check that the accessory is
completely inserted; reinsert if necessary.
Note that an otherwise unpowered Trip Unit is powered
up by an energized UVR accessory.
Ensure that steps 6, 7, and 8 in the Installation section
have been followed correctly.
4. The breaker does not trip
when UVR control power
is removed. The breaker is not closed.
UVR control power is actually
still applied.
The UVR trip connection is poor. Verify that the breaker is closed.
Check that the UVR control power has been removed or
that its voltage is less than 35% of the rated value.
Check that the UVR accessory is completely inserted.
Check that the Trip Unit is seated correctly. If the Trip
Unit was removed to set the switches, check that it has
been correctly installed; remove and reinstall, if necessary.
5. The Bell Alarm–Alarm
Only or Bell Alarm with
Lockout does not trip
correctly (trips when it
shouldn’t or doesn’t trip
when it should). The Bell Alarm–Alarm Only or
Bell Alarm with Lockout
configuration switches on the
back of the MicroVersaTrip Plus
or MicroVersaTrip PM Trip Unit
are not properly set. Note that
this feature is not available with
Power+™ Trip Units.
The Bell Alarm–Alarm Only or
Bell Alarm with Lockout
accessory is improperly installed. Follow the procedure to remove the Trip Unit and set the
switches. Check that the switches have been set correctly.
See the Trouble-Shooting Guide for the Bell Alarm with
Lockout in GEH-6278 or the Bell Alarm–Alarm Only in
GEH-6275.
These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that
may be met in connection with installation, operation, or maintenance. Should further information be desired or should
particular problems arise that are not covered sufficiently for the purchaser’s purposes, the matter should be referred to the
GE Company.
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GE Electrical Distribution & Control
General Electric Company
41 Woodford Ave., Plainville, CT 06062
GEH-6520A 0697 © 1997 General Electric Company