ABB | SACE Emax 2
Putting into service and maintenance
2 - Identification of alarms or failures
51 | © 2023 ABB | 1SDH001000R0002 - ECN000297030
Continued from the previous page
Faults
Possible causes
Suggestions
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
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
Function G inhibited owing to high
current
Correct operating condition (see
use cases in the chapter that
describes the protection)
Measurements
incorrect or absent
(current, etc)
Current below the minimum
threshold that can be displayed
Correct operating condition.
Harmonic distortion and/or crest
factor off range
Correct operating condition.
Opening data not
displayed
No auxiliary power supply and/or
battery low
Correct operating condition.
