ABB SACE Emax 2 Instructions Manual page 36

34 | © 2023 ABB | 1SDH001316R1002 - ECN000297030
Continued from the previous page
Faults Possible causes
The trip signal of the protection trip
unit has not been reset
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
doesn't close when
the closing coil is
The operating mechanism is blocked
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 opening The operating mechanism is blocked Contact ABB
pushbutton is
pressed
The operating mechanism is blocked Contact ABB
The power supply voltage of the
auxiliary circuits is too low
The power supply voltage is different
from that indicated on the rating
The circuit-breaker
plate
doesn't open when
the opening coil is
powered
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 circuit-
breaker doesn't
open despite the The operating mechanism is blocked
command of the
undervoltage coil
It is not possible to
charge the closing
springs by means of The operating mechanism is blocked Contact ABB
the manual charging
lever
ABB | SACE Emax 2
Suggestions
Press the TU Reset button
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
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
manually; if the fault persists contact
ABB
Continued on the next page
Management operations
1 - Ekip Touch maintenance and troubleshooting