ABB Relion Technical Manual page 347

1MRK 502 048-UUS A
Technical manual
Fuse failure detection
Main logic
TEST
TEST ACTIVE
AND
BlocFuse = Yes
BLOCK
All VP < VSealInPU
SealIn = Enabled
Any VP < VsealInPU
FuseFailDetDVDI
AND
OpDVDI = Enabled
FuseFailDetZeroSeq
AND
AND
FuseFailDetNegSeq
AND
V2I2
V0I0
V0I0 OR V2I2
OpModeSel
V0I0 AND V2I2
OptimZsNs
CurrZeroSeq
a
a>b
CurrNegSeq
b
DeadLineDet1Ph
200 ms
MCBOP
60 sec
All VP > VsealInPU
0
VoltZeroSeq
OR
VoltNegSeq
AllCurrLow
52a
89b
ANSI10000041 V2 EN
Secondary system supervision
OR
OR
AND
AND
5 sec
OR
0
OR
OR
AND
AND
AND
0
0
150 ms
OR
AND
5 sec
0
Section 11
intBlock
AND
AND
AND
OR
AND
OR
ANSI10000041-2-en.vsd
BLKZ
BLKV
341