ABB REB670 Series Applications Manual page 128

Section 6
Differential protection
b
QB1
QB2
QA1
BI1
1200/1
QB9
Feeder Bay
IEC06000152 V1 EN-US
Figure 63: Feeder bay where b aux. contacts are used
122
Zone A
Disconnector aux. contact timing
Zone B
Main
contact
Aux. b
contact
b
BIM
External or Internal
Feeder BFP Backup
Trip Command
Feeder Backup
OC Trip
CT Input
Other
TRM
Equipment
BBP & BFP trip command to feeder breaker
Open Closed
Closed Open
Set Parameter
ZoneSel="CtrlExcludes"
Bxxx
BLKTR
CTRLZA
CONNZA
CTRLZB
CONNZB
TRZONE
TRBAY
A/D
I3PB1
1MRK 505 370-UEN D
REB 670
TRIP
BOM
en06000152.vsd
Busbar protection REB670
Application manual