ABB Relion 670 series - Page 538

StartModeStartMode
11
LatchedStart
FollowStart
FollowStart&Mode
OROR
30ms 30ms
t
t1
t
t1
currPh1Check
CB Position Check
int startA
OROR
OROR
OROR
t
t1
t
t1
tPulsetPulse
tPulsetPulse
TRRETA
TRRETB
TRRETC
TRRET
From other
phases
int retrip
RetripModeRetripMode
11
Off
UseFunctionMode
Always
AND
OR
AND
AND
AND
AND
OR
ANSI18001008-1-en.vsdx
ANSI18001008 V1 EN-US
Figure 280: Simplified re-trip logic
StartModeStartMode
11
LatchedStart
FollowStart
FollowStart&Mode
OROR
30ms 30ms
t
t2
t
t2
currCheck
CB Position Check
int startA
OROR
OROR
OROR
tPulsetPulse
OROR
backupTripA
backupTripB
TRBU
t
t2MPh
t
t2MPh
int startB
int startC
t
tCBAlarm
t
tCBAlarm
CBFLT CBALARM
backupTripC
t
t3
t
t3
OROR
tPulsetPulse
TRBU2
From
other
phases
2 of 3
AND
AND
AND
AND
OR
OR
ANSI18001009-1-en.vsdx
ANSI18001009 V1 EN-US
Figure 281: Simplified backup trip logic
Section 8 1MRK 502 066-UUS B
Current protection
532
Technical manual