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.
5.5
Trips
GUID-481CEBDF-E86A-4F91-9971-9E7DBF0F2D79 v3
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):
Trip: corresponding bus zones
BBP Trip:
Differential current Id
Restraint current Ih
Max. phase difference Ph-Diff
BFP TRIP T1:
Current of each phase
BFP TRIP T2:
Current of each phase
OCDT TRIP:
Current
PDF TRIP:
Current
EFP TRIP:
Current
EXTERNAL TRIP
DIST TRIP:
Zone (Zone 1,2,3,4, or Zone 5 for the final zone), impedance and fault location
Further trip signal of Bay Protection (if existing)
All these information can be seen in the trip list by navigation via the right and left arrow keys
on the LHMI.
Table 22: Navigation within LHMI trip list
1)
Trip
2)
Date
Source
Value
3)4)
1) Navigation via the right and left arrow keys on the LHMI (Value can have entries in several columns)
2) Trip signals column is fixed on left side of the trip list
3) Value: information (number of columns) depends on the information content of the trip signal
4) Current value indications are generally instantaneous values
Section 5
1MRK 500 132-UEN B
Local HMI
78
Distributed busbar protection REB500
Operation manual
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