ABB REB670 Applications Manual page 149

1MRK 505 337-UUS -
Application manual
Zone A
Zone B
REB 670
189
CB Closing
289 Signal
a
b
152
BI1
BIM
Bus-Coupler
Bay
CT Input
Other
Equipment
ANSI06000154 V1 EN
Figure 65: Bus coupler bay with one CT and a&b aux. contact from CB
t=1s
t
OR
SSxx
DISABLE
CLOSED
NO
OPEN
Bxxx
NC
ALARM
BLKTR
FORCED
CTRLZA
CTRLZB
External or Internal
ZEROCUR
Bus-Coupler BFP
TRZONE
Backup Trip Command
TRBAY
I3PB1
Bus-Coupler Backup
OC Trip
TRM
Parameter ZoneSel must be
set to "FixedToZA&-ZB"
tZeroCurrent=150ms
A/D
BBP & BFP trip command to Bus-Coupler breaker
Section 6
Differential protection
TRIP
CONNZA
CONNZB
BOM
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