ABB REB670 - Breaker-And-A-Half Busbar Arrangements

en06000148_ansi.vsd
Double
breaker
REB 670
CTRLZA
CTRLZB
TRIP
CONNZA
CONNZB
Bxxx
I3PB1
BLKTR
TRZONE
TRBAY
BOM
CTRLZA
CTRLZB
TRIP
CONNZA
CONNZB
Bxxx
I3PB1
BLKTR
TRZONE
TRBAY
CT Input
TRM
152 Internal BFP
Backup Trip Command
Zone B
Other
Equipment
Other
Equipment
CT Input
Zone A
A/D
A/D
252 Internal BFP
Backup Trip Command
BBP &
BFP
TRIP
152
BBP &
BFP
TRIP
252
OR
BFP
Remote
Feeder
End
Inter-
Trip
Feeder
Parameter ZoneSel must
be set to "FixedToZB"
Parameter ZoneSel must
be set to "FixedToZA"
152
252
BI1
BI1
152
ANSI06000148 V1 EN-US
Figure 59: Feeder bay in double bus – double breaker station
6.1.4.7 Breaker-and-a-half busbar arrangements
M6646-3 v5
A fewer number of circuit breakers are needed for the same flexibility as for double
circuit breaker busbar arrangement, as shown in Figure 60.
1MRK 505 370-UUS A Section 6
Differential protection
Busbar protection REB670 2.2 ANSI 143
Application manual