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Table 67:
CCRBRF (50BF) Output signals
Name
Type
Description
TRBU
BOOLEAN
Back-up trip by breaker failure protection function
TRRET
BOOLEAN
Retrip by breaker failure protection function
6.7.5
Settings
Table 68:
CCRBRF (50BF) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Disable/Enable Operation
FunctionMode
Current
Contact
Current&Contact
-
-
Current
Detection principle for back-up trip
BuTripMode
2 out of 4
1 out of 3
1 out of 4
-
-
1 out of 3
Back-up trip mode
RetripMode
Retrip Off
CB Pos Check
No CBPos Check
-
-
Retrip Off
Operation mode of re-trip logic
Pickup_PH
5 - 200
%IB
1
10
Phase current pickup in % of IBase
Pickup_N
2 - 200
%IB
1
10
Operate residual current level in % of IBase
t1
0.000 - 60.000
s
0.001
0.000
Time delay of re-trip
t2
0.000 - 60.000
s
0.001
0.150
Time delay of back-up trip
Table 69:
CCRBRF (50BF) Group settings (advanced)
Name
Values (Range)
Unit
Step
Default
Description
Pickup_BlkCont
5 - 200
%IB
1
20
Current for blocking of 52a operation in % of
Ibase
Table 70:
CCRBRF (50BF) Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
GlobalBaseSel
1 - 6
-
1
1
Selection of one of the Global Base Value
groups
Section 6
1MRK 511 287-UUS A
Current protection
138
Technical manual
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