ABB Relion 670 series, Technical Reference Manual

Page: 617 / 1232

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