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

Section 6
Differential protection
6.1.4.7
136
REB 670
Zone A
152 Internal BFP
Backup Trip Command
152
152
CT Input
BI1
Other
Equipment
CT Input
BI1
Other
Equipment
252
252 Internal BFP
Backup Trip Command
Zone B
Double
breaker
ANSI06000148 V1 EN
Figure 58: Feeder bay in double bus – double breaker station

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.
Bxxx
BLKTR
CTRLZA
CTRLZB
TRM
TRZONE
TRBAY
A/D
I3PB1
Bxxx
A/D
BLKTR
CTRLZA
CTRLZB
TRZONE
TRBAY
I3PB1
OR
1MRK 505 337-UUS -
BBP &
BFP
TRIP
TRIP
CONNZA 152
CONNZB
Parameter ZoneSel must
be set to "FixedToZA"
BOM
BBP &
BFP
TRIP
TRIP
CONNZA 252
CONNZB
Parameter ZoneSel must
be set to "FixedToZB"
BFP
Remote
Feeder
End
Inter-
Trip
en06000148_ansi.vsd
Application manual