ABB SACE Tmax XT7 Operation And Maintenance Manual page 23

Faults, causes and remedies A list of possible faulty situations for Ekip Touch, their possible causes and suggestions about how to resolve
21 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
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Protections
In the event of protection or measurement alarms, the associated signals are reported:
Signal
Trip Test
Protection timing (for example: L
timing)
Protection prealarm (for example:
Prealarm G)
Protection (Trip off) [for example: S
(Trip off) ]
2I Protection Active
Load LC1 / Load LC2
Iw1 Warning / Iw2 Warning
Harmonic dist.
Power factor
Phase cycle
Frequency
5th harmonic above Th / I sopra Th
/ THD I above Th / THD V above Th
them are given below.
NOTE: check error messages on display before consulting the table; if the suggestions given
fail to resolve the problem, call the ABB assistance service and provide the report
produced by the Ekip Connect software if possible
Faults
The circuit-breaker doesn't close
when the closing pushbutton is
pressed
Type of alarm
Trip test performed signal. Press iTEST to reset the message
Specific protection in time delay mode
Specific protection in prealarm
Specific protection, configured with trip disabled, in alarm state
2I Protection active
Current threshold 1 I1 / 2 I1 exceeded and in alarm state
Current threshold Iw1 / Iw2 exceeded and in alarm state
Harmonic Distortion protection in alarm state
Power factor measurement (cos φ) less than set threshold
Phase sequence protection in alarm state
Frequency measured off range (<30 Hz or >80 Hz)
Single or total harmonic measurement above threshold
Possible causes
The trip signal of the protection
trip unit has not been reset
The open-position key lock or
padlock is activated
The circuit-breaker is in an
intermediate position between
connected and isolated for test
or between isolated for test and
disconnected
The undervoltage coil is not
energized
The opening coil is permanently
energized
The trip unit pushbutton is
pressed (withdrawable version)
Management operations | 2 - Maintenance and troubleshooting
ABB | SACE Tmax XT
Suggestions
Press the TU mechanical reset
pushbutton or operate the
electrical reset remotely.
Unlock the lock in open position
using the relevant key
Complete the rack-in operation
Check the power supply circuit
and the power supply voltage
Correct operating condition.
Rotate the crank to complete
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