ABB Sace Emax 2 Installation, Operation And Maintenance Instructions page 51

49 | © 2022 ABB | 1SDH000999R0002 - ECN000297030
Continued from the previous page
Faults Possible causes
It is not possible to
remove the circuit-
Fail Safe lock active
breaker from the
disconnected position
Wrong threshold/time/curve
selected
Trip times different
than expected Thermal memory enabled
Incorrect neutral selection
Rapid trip with I3 = Off linst trip
High ground-fault
Function G inhibited owing to high
current, but no trip
current
occurs
Current below the minimum
Measurements
threshold that can be displayed
incorrect or absent
Harmonic distortion and/or crest
(current, etc)
factor off range
Opening data not No auxiliary power supply and/or
displayed battery low
ABB | SACE Emax 2
Suggestions
Discharge the closing springs of the
command
Correct parameters
Disable it if it is not necessary
Modify the neutral selection
Correct operating condition with
short circuit at high current
Correct operating condition (see
use cases in the chapter that
describes the protection)
Correct operating condition.
Correct operating condition.
Correct operating condition.
Putting into service and maintenance
2 - Identification of alarms or failures