ABB XT7, Руководство по эксплуатации и обслуживанию

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ABB | SACE Tmax XT
Management operations | 2 - Maintenance and troubleshooting 21 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Continued from the previous page
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
timing)
Specific protection in time delay mode
Protection prealarm (for example:
Prealarm G)
Specific protection in prealarm
Protection (Trip off) [for example: S
(Trip off) ]
Specific protection, configured with trip disabled, in alarm 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 above Th
Single or total harmonic measurement above threshold
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
Faults Possible causes Suggestions
The circuit-breaker doesn't close
when the closing pushbutton is
pressed
The trip signal of the protection
trip unit has not been reset
Press the TU mechanical reset
pushbutton or operate the
electrical reset remotely.
The open-position key lock or
padlock is activated Unlock the lock in open position
using the relevant key
The circuit-breaker is in an
intermediate position between
connected and isolated for test
or between isolated for test and
disconnected
Complete the rack-in operation
The undervoltage coil is not
energized Check the power supply circuit
and the power supply voltage
The opening coil is permanently
energized
Correct operating condition.
The trip unit pushbutton is
pressed (withdrawable version)
Rotate the crank to complete
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