ABB | SACE Emax 2
96 | © 2017
ABB |
1SDH000999R0002 - ECN000058721 - Rev. B
Putting into service and maintenance | 2 - Identification of alarms or failures
Continued from the previous page
Faults
Possible causes
Suggestions
The circuit-breaker
doesn't open when the
opening coil is powered
The operating mechanism is blocked
Contact ABB
The power supply voltage of the
auxiliary circuits is too low
Measure the voltage: it should not be
lower than 85 % of the rated voltage
of the coil
The power supply voltage is different
from that indicated on the rating plate
Use the correct voltage
The cables of the coil are not inserted
correctly in the terminals
Make sure there is continuity between
cable and terminal and if necessary
reconnect the cables of the coil to the
terminals
The connections of the power supply
circuit are wrong
Check the connections using the
relevant wiring diagram
The opening coil is damaged
Replace the coil
The circuit-breaker
doesn't open despite
the command of the
undervoltage coil
The operating mechanism is blocked
Perform the opening operation
manually; if the fault persists contact
ABB
It is not possible to
charge the closing
springs by means of the
manual charging lever
The operating mechanism is blocked
Contact ABB
It is not possible to
charge the closing
springs by means of the
gearmotor
The cables of the gearmotor are not
inserted correctly in the terminals
Make sure there is continuity between
cable and terminal and if necessary
reconnect the cables of the gearmotor
to the terminals
The connections of the power supply
circuit are wrong
Check the connections using the
relevant wiring diagram
The circuit-breaker is in disconnected
position
Switch the circuit-breaker to the test
or connected position
The gearmotor protection internal
fuse has tripped
Replace the fuse
The gearmotor is damaged
Replace the gearmotor
It is not possible to press
the button in order to
insert the racking out
crank handle
The circuit-breaker is closed
Press the opening pushbutton in order
to allow the insertion of the crank with
the circuit-breaker open
It is not possible to insert
the moving part in the
fixed part
The racking-in/racking-out operation is
not performed correctly
See chapters "Circuit breaker racking-
in/racking-out operations" on pages
18
The moving part is incompatible with
the fixed part
Check the compatibility between the
moving part and the fixed part
It is not possible to lock
the circuit-breaker in the
open position
The opening pushbutton is not being
pressed
Press the opening pushbutton and
activate the lock
The lock in open position is defective
Contact ABB
It is not possible to
perform the trip test
The opening solenoid is not inserted
correctly
Check the connection of the opening
solenoid and check the messages on
the display
The trip signal of the protection trip
unit has not been reset
Press the reset pushbutton
The busbar current is greater than zero Correct operating condition.
Continued on the next page
