ABB Relion 670 series, Technical Reference Manual

Page: 467 / 1232

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