ABB SACE Emax 2 Installation, Operation And Maintenance Instructions For The Installer And The User page 99

97 | © 2017 ABB | 1SDH000999R0002 - ECN000058721 - Rev. B
Continued from the previous page
Faults
It is not possible to remove
the circuit-breaker from the
disconnected position
Tripping times shorter than
expected
Tripping times longer than
expected
Rapid trip with I3 = Off
High ground-fault current, but
no trip occurs
Display off (if present)
The display is not backlit (if
present)
Incorrect current reading
Incorrect voltage, power and
cos φ reading
The expected trip does not
occur
No activation of the Voltage
unbalance protection (VU)
Opening data not displayed
The password is not
requested
Password error
Communication problems
with Ekip Com, Ekip Link or
Ekip Signalling
State of CB Position field not
aligned with circuit-breaker
position
Possible causes
Fail Safe lock active
Selected threshold too low
Wrong curve selected
Thermal memory enabled
Incorrect neutral selection
Zone Selectivity enabled
Threshold too high
Curve too high
Wrong curve selected
Incorrect neutral selection
linst trip
Incorrect selection of the sensor
Function G inhibited owing to high
current
No auxiliary power supply and the
current and/or voltage is less than
minimum value
Temperature outside range
Current and/or voltages below the
display switch-on limit
Current below the minimum
threshold that can be displayed
Incorrect connection between
isolation transformer and Ekip
Measuring
Voltage parameter setting error
Trip excluded
Values outside range
No auxiliary power supply and/or
battery low
The password was disabled or
already inserted recently
Password wrong or lost
Circuit-breaker in withdrawn
position, Vaux absent or modules
not inserted properly
Absence of Ekip Com or Ekip Link
modules, or contact S75I
Putting into service and maintenance | 2 - Identification of alarms or failures
ABB | SACE Emax 2
Suggestions
Discharge the closing springs of the
command
Modify the threshold
Modify the curve
Disable it if it is not necessary
Modify the neutral selection
Disable it if it is not necessary
Modify the threshold
Modify the curve
Modify the curve type
Modify the neutral selection
Correct operating condition with
short circuit at high current
Set internal or external sensor
Correct operating condition (see
use cases in the chapter that
describes the protection)
Correct operating condition.
Correct operating condition.
Correct operating condition.
Correct operating condition.
Check the connections between
the isolation transformer and Ekip
Measuring
Set the correct parameters
Correct operating condition. Enable
trip if necessary
Correct operating condition.
Correct operating condition.
Correct operating condition, reset
the password with a value other than
"00000"
See the document
1SDH001501R0002 or contact ABB
Insert modules, set circuit-breaker to
Connected position, connect Vaux
Check for presence of Ekip Com
or Ekip Link modules and connect
contact S75/I