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ABB Relion 650 Series Technical Manual page 285

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Technical manual (754 pages)

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1MRK 506 326-UUS B

Fuse failure detection

Main logic

TEST

TEST ACTIVE

BlocFuse = Yes

BLOCK

All VP < VSealInPU

SealIn = Enabled

Any VP < VsealInPU

FuseFailDetDVDI

OpDVDI = Enabled

FuseFailDetZeroSeq

FuseFailDetNegSeq

OpModeSel

CurrZeroSeq

CurrNegSeq

DeadLineDet1Ph

MCBOP

All VP > VsealInPU

VoltZeroSeq

VoltNegSeq

AllCurrLow

52a

89b

ANSI10000041 V1 EN-US

Figure 143: Simplified logic diagram for fuse failure supervision function, Main logic

Line distance protection REL650

Technical manual

AND

OR

OR

AND

AND

AND

5 s

OR

t

AND

AND

AND

V2I2

V0I0

V0I0 OR V2I2

V0I0 AND V2I2

OptimZsNs

AND

a

a>b

b

AND

200 ms

AND

t

150 ms

t

60 sec

OR

t

5 sec

t

OR

© Copyright 2011 ABB Power Grids. All rights reserved

AND

OR

OR

OR

OR

AND

ANSI10000041-1-en.vsd

Section 9

Secondary system supervision

intBlock

AND

BLKZ

AND

BLKV

AND

279

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