SealIn = On
All UL <
USealIn<
Any UL <
UsealIn<
t
5 s
AND
3PH
MCBOP
All UL >
UsealIn<
t
60 s
CBCLOSED
BLOCK
AND
TEST
TEST ACTIVE
AND
BlocFuse = Yes
OpMode
AND
t
200 ms
AND
OR
DISCPOS
BLKU
BLKZ
AND
AND
FuseFailDetZeroSeq
UZsIZs OR UNsINs
UZsIZs AND UNsINs
UZsIZs
UNsINs
OptimZsNs
AND
FuseFailDetNegSeq
OR
AND
AND
CurrZeroSeq
CurrNegSeq
a
b
a>b
OR
AND
AND
AND
FuseFailDetDUDI
AND
OpDUDI = On
DeadLineDet1Ph
OR
OR
OR
OR
AND
VoltZeroSeq
VoltNegSeq
t
5 s
AllCurrLow
t
150 ms
intBlock
Fuse failure detection
Main logic
BLKTRIP
AND
t
100 ms
OR
t
20 ms
OR
IEC10000033-2-en.vsd
OR
FusefailStarted
IEC10000033 V2 EN
Figure 293:
Simplified logic diagram for fuse failure supervision function, Main
logic
Section 13
1MRK502052-UEN B
Secondary system supervision
618
Technical manual
Содержание Relion REG670
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