5.2.6
Signals
Table 677:
50BF Input signals
Name
Type
Default
Description
I_A
SIGNAL
0
Phase A current
I_B
SIGNAL
0
Phase B current
I_C
SIGNAL
0
Phase C current
Io
SIGNAL
0
Residual current
BLOCK
BOOLEAN
0=False
Block CBFP operation
PICKUP
BOOLEAN
0=False
CBFP pickup command
POSCLOSE
BOOLEAN
0=False
CB in closed position
CB_FAULT
BOOLEAN
0=False
CB faulty and unable to trip
Table 678:
50BF Output signals
Name
Type
Description
CB_FAULT_AL
BOOLEAN
Delayed CB failure alarm
TRBU
BOOLEAN
Backup trip
TRRET
BOOLEAN
Retrip
5.2.7
Settings
Table 679:
50BF Non group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Operation
1=enable
5=disable
1=enable
Operation Disable / Enable
Current value
0.05...2.00
xIn
0.05
0.30
Operating phase current
Current value Res
0.05...2.00
xIn
0.05
0.30
Operating residual current
CB failure trip mode
1=2 out of 4
2=1 out of 3
3=1 out of 4
2=1 out of 3
Backup trip current check mode
CB failure mode
1=Current
2=Breaker status
3=Both
1=Current
Operating mode of function
CB fail retrip mode
1=Disabled
2=Without Check
3=Current check
1=Disabled
Operating mode of retrip logic
Retrip time
0...60000
ms
10
120
Delay timer for retrip
CB failure delay
0...60000
ms
10
240
Delay timer for backup trip
Section 5
1MAC059074-MB A
Protection related functions
782
615 series ANSI
Technical Manual
Summary of Contents for Relion 615 series
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