ABB REL 356

ABB REL 356 Current Differential Protection
4-16
Measuring Elements and Operational Logic
ABB
03-23-97
SW
REL356 CURRENT DIFFERENTIAL SYSTEM LOGIC
OPTIONAL DISTANCE BACKUP SYSTEM
ABB Automation Inc.
Substation Automation and Protection Division
Allentown, PA
SIZE FSCM NO DWG NO REV
1358D84
V 1.2X
SH
3 OF 3
IAL IBL
21BO-A 21BO-B
21BI-A 21BI-B
OSI
OUT OF STEP
LOGIC
Z2G Z3G
3F SEBR
OSTI
100
OSB
OSOT
0
OST2
100
OST3
100
20
500
OST
WAYO
WAYI
OST
21BI
OSB
Z2
BOTH
Z3
OUT
OSB(Z2) OSB(Z3)
IAL IBL ICL
IL3F
LOW LEVEL
CURRENT
SUPERVISION
FDOPA FDOPB FDOPC
FDOP3F
PHASE
DIRECTIONAL
ELEMENTS
3F Z2
3F OSB(Z2) 21BI FDOP3F IL3F
F AGZ2 F BGZ2
F CGZ2
2F G
IOM FDOG
Z2-2F G
Z2G
FF Z2
FF
3F
Z2P
SEBR IL
LOPB
T2P
BLK
T2P
T2P
0
Z2PT
TRSL
Q Q
SET
CLR
S
R
Z2P
LOPB
IOM SEBR FDOG FG
T2G
BLK
T2G
T2G
0
Z2GT
TRSL
Q Q
SET
CLR
S
R
Z2G
3F Z3
3F OSB(Z3) 21BI FDOP3F IL3F
F AGZ3 F BGZ3
F CGZ3
2F G
IOM FDOG
Z3-2F G
Z3G
FF Z3
FF
3F
Z3P
SEBR IL
LOPB
T3P
BLK
T3P
T3P
0
Z3PT
TRSL
Q Q
SET
CLR
S
R
Z3P
LOPB
IOM SEBR FDOG
T3G
BLK
T3G
T3G
0
Z3GT
TRSL
Q Q
SET
CLR
S
R
Z3G
TOGTRIP Z2GT Z2PT Z3PT Z3GT
BTRP
PSE
TRSL
BACKUP TRIP
ZONE 2
ZONE 3
FDOG
FDOG
OUT
IN
SEBR
IOM
IOM
TOG
BLK
TOG
TOG
0
TRSL
Q Q
SET
CLR
S
R
TOG
TOGTRIP
GROUND TRIP
V0
I0
500 500
16
500
LOI
LOP
LOPB
NO
YES
LOPB
LOSS OF POTENTIAL
LOSS OF CURRENT