ABB RELION 670 Series Applications Manual page 127

1MRK 505 337-UUS A
152
152
BI1
BI1
252
Double
breaker
ANSI06000148 V1 EN-US
Figure 58: Feeder bay in double bus – double breaker station
6.1.4.7 Breaker-and-a-half busbar arrangements
A fewer number of circuit breakers are needed for the same flexibility as for double circuit breaker
busbar arrangement, as shown in figure 59.
Application manual
REB 670
Zone A
152 Internal BFP
Backup Trip Command
TRM
CT Input
A/D
Other
Equipment
CT Input
A/D
Other
Equipment
252 Internal BFP
Backup Trip Command
Zone B
Bxxx
BLKTR
TRIP
CTRLZA
CONNZA
CTRLZB
CONNZB
TRZONE
Parameter ZoneSel must
TRBAY
be set to "FixedToZA"
I3PB1
BOM
Bxxx
BLKTR
TRIP
CTRLZA
CONNZA
CTRLZB
CONNZB
TRZONE
Parameter ZoneSel must
TRBAY be set to "FixedToZB"
I3PB1
OR
en06000148_ansi.vsd
Section 6
Differential protection
BBP &
BFP
TRIP
152
BBP &
BFP
TRIP
252
BFP
Remote
Feeder
End
Inter-
Trip
M6646-3 v4
121