ABB Relion 670 series, Technical Reference Manual

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7.8.3 Function block
CCRBRF (50BF)
I3P*
BLOCK
BFI_3P
BFI_A
BFI_B
BFI_C
52A_A
52A_B
52A_C
52FAIL TRBU
TRBU2
TRRET
TRRET_A
TRRET_B
TRRET_C
CBALARM
ANSI06000188-2-en.vsd
ANSI06000188 V2 EN
Figure 231: CCRBRF (50BF) function block
7.8.4 Input and output signals
Table 219: CCRBRF (50BF) Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Three phase group signal for current inputs
BLOCK BOOLEAN 0 Block of function
BFI_3P BOOLEAN 0 Three phase breaker failure initiation
BFI_A BOOLEAN 0 Phase A breaker failure initiation
BFI_B BOOLEAN 0 Phase B breaker failure initiation
BFI_C BOOLEAN 0 Phase C breaker failure initiation
52a_A BOOLEAN 1 Circuit breaker closed in phase A
52a_B BOOLEAN 1 Circuit breaker closed in phase B
52a_C BOOLEAN 1 Circuit breaker closed in phase C
52FAIL BOOLEAN 0 CB faulty, unable to trip. Back-up trip instantaneously
Table 220: CCRBRF (50BF) Output signals
Name Type Description
TRBU BOOLEAN Back-up trip by breaker failure protection function
TRBU2 BOOLEAN Second back-up trip by breaker failure protection
function
TRRET BOOLEAN Retrip by breaker failure protection function
TRRET_A BOOLEAN Retrip by breaker failure protection function phase A
TRRET_B BOOLEAN Retrip by breaker failure protection function phase B
TRRET_C BOOLEAN Retrip by breaker failure protection function phase C
CBALARM BOOLEAN Alarm for faulty circuit breaker
Section 7
1MRK505222-UUS C
Current protection
460
Technical reference manual