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 Shunt Trip accessory
will not insert completely
into 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.
2.
The breaker will not trip
when control power is
applied to the Shunt Trip.
The Shunt Trip is not energized.
The installed Shunt Trip has an
incorrect voltage rating.
The transformer connections are
incorrect.
The Shunt Trip connection is
poor.
The breaker is not closed.
Check that Shunt Trip control power is applied at greater
than 55% of the rated ac voltage. Check that the accessory
is completely inserted; reinsert if necessary.
Check for the proper voltage rating on the Shunt Trip.
Ensure that steps 6, 7, and 8 in the Installation section
have been followed correctly.
Check that the Shunt Trip 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.
Note that an otherwise unpowered Trip Unit would be
powered up by an energized Shunt Trip accessory.
Verify that the breaker is closed.
3
.
The breaker closes
manually when the Shunt
Trip with Lockout is
energized.
The Shunt Trip with Lockout
solenoid is not energized.
The Shunt Trip with Lockout
control power connection is poor.
Check that the Shunt Trip with Lockout control power is
applied at greater than 55% of the rated ac voltage. Check
that the accessory is completely inserted; re-insert if
necessary.
Note that an otherwise unpowered Trip Unit is powered
by an energized Shunt Trip accessory.
Check that the Shunt Trip with Lockout accessory is
completely inserted.
4.
The breaker will not close
manually when the Shunt
Trip or Shunt Trip with
Lockout control power is
removed.
The Shunt Trip or Shunt Trip
with Lockout control power is
actually still applied.
The breaker is already closed
The Shunt Trip with Lockout
plunger is not retracted.
Check that the Shunt Trip or Shunt Trip with Lockout
control power has been removed.
Check that the breaker is not closed; if so, open it and try
again.
Remove the Shunt Trip with Lockout accessory. If the
lockout plunger protrudes out of the accessory, replace
the accessory. If the plunger does not protrude, reinsert
the accessory, ensuring good alignment of the accessory
in the pocket.
5.
The breaker fails to close
after control power is
removed from the Shunt
Trip with Lockout.
Control power was not removed
for a minimum of 0.25 seconds
before the breaker was closed.
Wait at least 0.25 seconds before closing the breaker after
removing control power from the Shunt Trip.
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 Dist ribution & Control
General Electric Company
41 Woodford Ave., Plainville, CT 06062
GEH-6519B 0697
© 1997 General Electric Company
