Page 21 - MCCB-XT2-XT4

Continued from the previous page ABB | SACE Tmax XT
Protections
In the event of protection or measurement alarms, the associated signals are reported:
Signal Type of alarm
Trip Test Trip test performed signal. Press iTEST to reset the message
Protection timing (for example: L Specific protection in time delay mode
timing)
Protection prealarm (for example: Specific protection in prealarm
Prealarm G)
Protection (Trip off) [for example: Specific protection, configured with trip disabled, in alarm
S (Trip off) ] state
2I Protection Active 2I Protection active
Load LC1 / Load LC2 Current threshold 1 I1 / 2 I1 exceeded and in alarm state
Iw1 Warning / Iw2 Warning Current threshold Iw1 / Iw2 exceeded and in alarm state
Harmonic dist. Harmonic Distortion protection in alarm state
Power factor Power factor measurement (cos φ) less than set threshold
Phase cycle Phase sequence protection in alarm state
Frequency Frequency measured off range (<30 Hz or >80 Hz)
5th harmonic above Th / I sopra
Th / THD I above Th / THD V Single or total harmonic measurement above threshold
above Th

Faults, causes and remedies A list of possible faulty situations for Ekip Touch, their possible causes and suggestions about how to
resolve 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
Fault Possible causes Suggestions
Circuit-breaker in withdrawn Insert modules, set CB to
Communication problems with
modules in terminal box position, Vaux absent or Connected position, connect
modules not inserted properly Vaux
Check for presence of terminal
CB status not aligned with CB Absence of terminal box box modules and connect
position modules or of contact S75I
contact S75/I
The connections or supplies of
the opening/closing actuators Check connections and
are not correct supplies.
Circuit-breaker fails to react Absence of auxiliary power Check supplies and status of
to opening/closing command supply to Ekip Touch Power LEDs
from Ekip Touch
Circuit-breaker is in a condition Check circuit-breaker
which fails to enable the documentation and cases that
selected command fail to enable command
No auxiliary supply or currents
lower than minimum turn-on Correct operating condition.
Display off and/or not backlit values
Temperature outside range Correct operating condition.
Current below the minimum
threshold that can be displayed Correct operating condition.
Incorrect frequency setting Set frequency
Measurements incorrect or
absent (current, voltage, etc) Harmonic distortion and/or Correct operating condition.
crest factor off range
Rated Voltage parameter Set the correct parameters
setting error

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