ABB SACE Emax 2 Installation, Operation And Maintenance Instructions page 97

Continued from the previous page
The circuit-breaker
doesn't open when the
opening coil is powered
The circuit-breaker
doesn't open due to the
command of the under-
voltage coil trips
It is not possible to load
the closing springs by
means of the manual
loading lever
It is not possible to load
the closing springs by
means of the gearmotor
It is not possible to press
the button in order to in-
sert the racking out crank
handle
It is not possible to insert
the moving part in the
fixed part
It is not possible to lock
the circuit-breaker in the
open position
It is not possible to per-
form the trip test
95 | © 2014 ABB | 1SDH000999R0002 - L8569
Faults Possible causes
The operating mechanism is locked
The power supply voltage of the auxil-
iary circuits is too low
The power supply voltage is different
to that indicated on the rating plate
The cables of the coil are not inserted
correctly in the terminals
The connections of the power supply
circuit are wrong
The opening coil is damaged
The operating mechanism is locked
The operating mechanism is locked
The cables of the gearmotor are not
inserted correctly in the terminals
The connections of the power supply
circuit are wrong
The circuit-breaker is in disconnected
position
The gearmotor protection internal
fuse has tripped
The gearmotor is damaged
The circuit-breaker is closed
The racking-in/racking-out operation is
not performed correctly
The moving part is incompatible with
the fixed part
The opening push-button is not being
pressed
The lock in open position is defective
The opening solenoid is not inserted
correctly
The trip signal of the protection re-
lease has not been reset
The busbar current is greater than zero Correct condition of operation.
Suggestions
Contact ABB
Measure the voltage: it should not be
lower than 85 % of the rated voltage
of the coil
Use the correct voltage
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 opening operation manu-
ally; if the fault persists contact ABB
Contact ABB
Make sure there is continuity between
cable and terminal and if necessary
reconnect the cables of the gearmotor
to the terminals
Check the connections using the
relevant wiring diagram
Switch the circuit-breaker to the test
or connected position
Replace the fuse
Replace the gearmotor
Press the opening push-button in or-
der to allow the insertion of the crank
with the circuit-breaker open
See chapters "Circuit breaker racking-
in/racking-out operations" on pages
18
Check the compatibility between the
moving part and the fixed part
Press the opening push-button and
activate the lock
Contact ABB
Check the connection of the opening
solenoid and check the messages on
the display
Press the reset push-button
Putting into service and maintenance | 2 - Identification of alarms or failures
ABB | SACE Emax 2
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