ABB REL 356

ABB REL 356 Current Differential Protection
4-14
Measuring Elements and Operational Logic
ABB
03-23-97
SW
REL356 CURRENT DIFFERENTIAL SYSTEM LOGIC
ABB Automation Inc.
Substation Automation and Protection Division
Allentown, PA
SIZE FSCM NO DWG NO REV
1358D84
V 1.2X
SH
1 OF 3
BACKUP
PROTECTION
DISABLE
DIFFERENTIAL
PROTECTION
DISABLE
52b
STUB
BUS
PROTECTION
TARGET
RESET
DTT-
KEY
HARDWARE
INPUTS
OPTO
ISOL
OPTO
ISOL
OPTO
ISOL
OPTO
ISOL
OPTO
ISOL
OPTO
ISOL
PWR
SUP 1
PWR
SUP 2
PRIMARY
INPUT
POWER
SECONDARY
INPUT
POWER
PSE
TTRP
OUT
IN
LDTT
COMM
RECV
RDTT
VFRI
ROBR
RDPD
FEPH
IA
IB
PHASE
A
IAL
IAE
IAH
IACD
VACD
VA
PHASE
B
IBL
IBE
IBH
IBCD
VBCD
VB
IC
PHASE
C
ICL
ICE
ICH
ICCD
VCCD
VC
3I0
IGL
IGH
IGCD
IC
ITIB
IA
SYMM
COMP
FILTER
C0 C1 C2
IT
LBPD
LDPD
52b
TARGET
RESET
SBP
INPUTS
ROBR = REMOTE OPEN BREAKER
VFRI = IT CURRENT FROM REMOTE END
RDTT = RECEIVED DIRECT TRANSFER TRIP
RDPD = REMOTE DIFF. PROT. DISABLED
FEPH = FRAME ERRORS PER HOUR
COMM
XMTR
CHOK
DISABLE
0
200
VFLI
LDTT
SBP
OPBR
RY2RY1
LL
BK1 BK2 BFI1 BFI2
0
50
TRIPA
BFIA
T1DAND
T2DAND
RY2RY1
LL
BK3 BK4 BFI3 BFI4
0
50
TRIPB
BFIB
0
2
4
T1DAND
'0'
0
2
4
T2DAND
0
2
4
'0'
'0'
DDTT
GENERAL
START
CHANNEL
ALARM
GS
CDT
CA
CT
TRIP
ALARM
TATRP1
TRP2
FAILURE
ALARM
FA
PSE
uPROC OK
RECL
INITIATE
RECL
INITIATE
RECL
INITIATE
RECL
INITIATE
RECL
BLOCK
RECL
BLOCK
0
300
RBT2DAND
RBEN
ALRB
NORB
'0'
T1DAND
RI1
RI2
0
200
T1DAND
OUTPUTS
RY2RY1
LL
BK5 BK6 BFI5 BFI6
0
50
TRIPC
BFIC
2
4
'0'
0
2
4
2
4
DDTT
'0'
T2DAND
'0'
0
T1DAND
DDTT
DDTT
0