Trips - ABB RELION REB500 Operation Manual

Section 5
Local HMI
• Contacts blocked
• Inspection/Maintenance
• Inspection alarm
• Auxiliary voltage failed
• Trip transferred
• Circuit breaker alarm
• Isolator alarm
• Test generator active
• Contacts blocked
• HW configuration mismatch
• Pow.sup. fault
• Power supply 2 failed
• AC Fail
• Major error
• BU problem
• CU problem
• General alarm
5.5

Trips

The trips generated by REB500 can be viewed in the trip list together with the protection functions that
caused them (Menu Trips/ first column of list). In addition the corresponding date/time information,
source and values (if existing) can be displayed.
The following trips can appear on the local HMI:
TRIP(ITT):
BBP Trip:
BFP TRIP T1:
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Viewing the event list and disturbance records is recommended should an alarm occur.
The corresponding procedure is described in
respectively.
Avoid performing switching operations in the event of the following alarms before the
failure has been analyzed by correspondingly trained personnel:
• Isolator alarm
• Switch inhibit
• Differential current alarm
• Inspection and maintenance
Non-observance of this precaution can cause maloperation in normal operation or a
failure to trip in response to a fault.
Isolator alarm may only be acknowledged by appropriately trained and authorized
personnel. Non-observance of this precaution can cause mal-operation in normal
operation or a failure to trip in response to a fault.
Trip: corresponding bus zones
Differential current Id
Restraint current Ih
Max. phase difference Ph-Diff
Current of each phase
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1MRK 500 132-UUS Rev. B
Section 4.5.7 and Section 4.5.8
GUID-481CEBDF-E86A-4F91-9971-9E7DBF0F2D79 v4
Distributed busbar protection REB500
Operation manual