SealIn = Enabled
All VL < V
SealInPU
Any VL < VS
ealInPU
t
5 s
AND
3PH
MCBOP
All VL > VS
ealInPU
t
60 s
52a
BLOCK
AND
TEST
TEST ACTIVE
AND
BlocFuse = Yes
OpModeSel
AND
t
200 ms
AND
OR
89b
BLKV
BLKZ
AND
AND
FuseFailDetZeroSeq
V0I0 OR V2I2
V0I0 AND V2I2
V0I0
V2I2
OptimZsNs
AND
FuseFailDetNegSeq
OR
AND
AND
CurrZeroSeq
CurrNegSeq
a
b
a>b
OR
AND
AND
AND
FuseFailDetDUDI
AND
OpDVDI = Enabled
DeadLineDet1Ph
OR
OR
OR
OR
AND
VoltZeroSeq
VoltNegSeq
OR
t
5 s
AllCurrLow
t
150 ms
intBlock
Fuse failure detection
Main logic
BLKTRIP
AND
t
100 ms
OR
t
20 ms
OR
ANSI10000033-3-en.vsd
FusefailStarted
ANSI10000033 V3 EN-US
Figure 395: Simplified logic diagram for fuse failure supervision function, Main logic
1MRK 502 066-UUS B
Section 13
Secondary system supervision
741
Technical manual
Summary of Contents for Relion 670 series
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