7.8.5
Setting parameters
Table 221:
CCRBRF (50BF) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Disable/Enable Operation
IBase
1 - 99999
A
1
3000
Base current
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
t2MPh
0.000 - 60.000
s
0.001
0.150
Time delay of back-up trip at multi-phase
pickup
tPulse
0.000 - 60.000
s
0.001
0.200
Trip pulse duration
Table 222:
CCRBRF (50BF) Group settings (advanced)
Name
Values (Range)
Unit
Step
Default
Description
Pickup_BlkCont
5 - 200
%IB
1
20
Current for blocking of CB contact operation
in % of IBase
t3
0.000 - 60.000
s
0.001
0.030
Additional time delay to 27P2TDLY for a
second back-up trip
tCBAlarm
0.000 - 60.000
s
0.001
5.000
Time delay for CB faulty signal
7.8.6
Technical data
Table 223:
CCRBRF (50BF) technical data
Function
Range or value
Accuracy
Operate phase current
(5-200)% of
lBase
±
1.0% of I
n
at I
£
I
n
±
1.0% of I at I > I
n
Reset ratio, phase current > 95%
-
Operate residual current
(2-200)% of
lBase
±
1.0% of I
n
at I
£
I
n
±
1.0% of I at I > I
n
Table continues on next page
1MRK505222-UUS C
Section 7
Current protection
461
Technical reference manual
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