ABB | SACE Tmax XT
Management operations | 2 - Maintenance and troubleshooting
23 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Continued from the previous page
Faults
Possible causes
Suggestions
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 the document
1SDH002013A1001
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
Trip coil is not connected properly
Check Trip coil connection and
messages on display
CB trip signal has not been reset
Press the reset pushbutton
The busbar current is greater than
zero
Correct operating condition.
It is not possible to remove
the circuit-breaker from the
disconnected position
Fail Safe lock active
Discharge the closing springs of
the command
Trip times different than expected
Wrong threshold/time/curve
selected
Correct parameters
Thermal memory enabled
Disable it if it is not necessary
Zone selectivity enabled
Disable it if it is not necessary
Incorrect neutral selection
Modify the neutral selection
Rapid trip with I3 = Off
linst trip
Correct operating condition with
short circuit at high current
High ground-fault current, but no
trip occurs
Incorrect selection of the sensor
Set internal or external sensor
Function G inhibited owing to high
current
Correct operating condition (see
use cases in the chapter that
describes the protection)
Display off and/or not backlit
No auxiliary supply or currents
lower than minimum turn-on
values
Correct operating condition.
Temperature outside range
Correct operating condition.
Continued on the next page
