Identification Of Alarms Or Failures; Faults, Causes And Remedies - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions

2 - Identification of alarms or failures

Faults, causes and remedies The following is a list of possible fault situations, their possible causes and suggestions for resolving them.
42 | © 2021 ABB | 1SDH002083A1002 - ECN000119014 - Rev. A
Faults Possible causes
The open-position key lock or padlock
is activated
The circuit-breaker is in an
intermediate position between
connected and isolated for test
The circuit-breaker
or between isolated for test and
doesn't close when the
disconnected
closing pushbutton is
pressed The undervoltage coil is not energized
The opening coil is permanently
energized
The trip unit pushbutton is pressed
(withdrawable version)
The power supply voltage of the
auxiliary circuits is too low
The power supply voltage is different
from that indicated on the rating plate
The cables of the coil are not inserted
correctly in the terminals
The connections in the power supply
circuit are wrong
The closing coil is damaged
The circuit-breaker The operating mechanism is blocked
doesn't close when the
closing coil is powered
The open position key lock is activated
The circuit-breaker is in an
intermediate position between
connected and test or the trip unit
pushbutton is pressed (withdrawable
version)
The undervoltage coil is not energized
The opening coil is permanently
energized
The racking out crank handle is
inserted (withdrawable version)
The circuit-breaker
doesn't open when the
The operating mechanism is blocked
opening pushbutton is
pressed
Suggestions
Unlock the lock in open position using
the relevant key
Complete the rack-in operation
Check the power supply circuit and
the power supply voltage
Correct operating condition.
Rotate the crank to complete
Measure the voltage: it should not be
lower than 70% of the rated voltage of
the coil
Check the voltage on the rating plate
Make sure there is continuity between
cable and terminal and if necessary
reconnect the cables of the coil to the
terminals
Check the connections using the
relevant wiring diagram
Replace the coil
Perform the closing operation
manually; if the fault persists contact
ABB
Unlock the lock in open position using
the relevant key
Complete the rack-in operation
Make sure that undervoltage coil is
energized properly
Correct operating condition. If
necessary, disconnect the power from
the opening coil
Remove the crank
Contact ABB
Putting into service and maintenance | 2 - Identification of alarms or failures
ABB | SACE Emax 2
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