ABB Relion 670 Series Technical Reference Manual page 617

1MRK505222-UUS C
11.2.3
11.2.4
Technical reference manual
Figure 307: Simplified logic diagram for fuse failure supervision function, Main logic
Function block
SDDRFUF
I3P* BLKZ
V3P* BLKV
BLOCK 3PH
52A DLD1PH
MCBOP DLD3PH
89B
BLKTRIP
ANSI05000700-2-en.vsd
ANSI05000700 V2 EN
Figure 308: SDDRFUF function block
Input and output signals
Table 311: SDDRFUF Input signals
Name Type
I3P GROUP
SIGNAL
V3P GROUP
SIGNAL
BLOCK BOOLEAN
52a BOOLEAN
MCBOP BOOLEAN
89b BOOLEAN
BLKTRIP BOOLEAN
Table 312: SDDRFUF Output signals
Name Type
BLKZ BOOLEAN
BLKV BOOLEAN
3PH BOOLEAN
DLD1PH BOOLEAN
DLD3PH BOOLEAN
Secondary system supervision
Default Description
- Current connection
- Voltage connection
0 Block of function
0 Active when circuit breaker is closed
0 Active when external Miniature Circuit Breaker opens
protected voltage circuit
0 Active when line disconnect switch is open
0 Blocks operation of function when active
Description
Start of current and voltage controlled function
General pickup
Three-phase pickup
Dead line condition in at least one phase
Dead line condition in all three phases
Section 11
611