GE Industrial Solutions Power Break II Switches, 800-4000A Frames, 240-600Vac - Manual (Page 25)

Power Break® II Switches
Chapter 4. Trouble-Shooting Guide
17
The following guide is provided for trouble-shooting and
isolating common problems. It does not cover every
possible situation. Contact the GE Insustrial Systems
Customer Support Center at 800-843-3742 if any problem
is not resolved by these procedures.
Symptom Possible Cause Corrective Action
1. The switch does not
close when the ON
button is pressed and
there is no sound of the
closing spring releasing.
The closing spring is not fully
charged.
The Bell Alarm with Lockout is
deployed.
The Undervoltage Release is
not energized.
The Control Unit is not
properly installed.
On a manually operated switch, operate the handle
until the indicator shows CHARGED .
On an electrically operated switch, check that the
voltage to the motor operator is at least 85% of
nominal. See GEH–6281, Motor Operator
Mechanism.
Correct the condition that initiated the bell alarm,
then depress the yellow plunger on the Bell Alarm
with Lockout module to reset the lockout. See GEH–
6278, Bell Alarm with Lockout .
See GEH–6285, Undervoltage Release , for details on
energizing the UVR.
See DEH–40381,
Power+™ Control Units, for the
Control Unit installation procedure.
2. The switch does not
close when the ON
button is pressed, but
the closing spring is
heard to release.
The Control Unit detected a
fault and immediately tripped
the switch.
The Shunt Trip is energized.
The switch is locked in the
OFF
position by a padlock or key
interlock.
The switch is interlocked with
another switch with a walking
beam.
If a draw-out switch, it is not
fully inserted in the
substructure (between the
TEST and CONNECTED
positions.
Clear the fault, then recharge the closing spring and
close the switch. For fault diagnostics, see DEH–
40381, Power+™ Control Units.
See GEH–6284, S hunt Trip , for instructions on de-
energizing the unit.
After ensuring that the safety reason for locking the
switch no longer applies, remove the padlock or key
interlock. See GEH–-6279, Key Interlock Mounting
Provision .
See GEH–6286, Walking-Beam Interlock , for the
removal procedure.
Ensure that the switch is fully racked in to the
substructure. See GEH–6272, Draw-Out Substructure,
800–4000 Amperes .
3. The switch can be
opened locally, but not
remotely.
There is a problem with the
Shunt Trip.
There is a problem with the
Undervoltage Release.
See the trouble-shooting instructions in GEH–6284,
S hunt Trip .
See the trouble-shooting instructions in GEH–6285,
Undervoltage Release .