ABB REB670 Series - Page 130

en06000154.vsd
Zone A
Zone B
Bus-Coupler
Bay
REB 670
CTRLZA
CTRLZB
TRIP
CONNZA
CONNZB
Bxxx
I3PB1
BLKTR
TRZONE
TRBAY
BBP & BFP trip command to Bus-Coupler breaker
BOM
A/D
Parameter ZoneSel must be
set to "FixedToZA&-ZB"
tZeroCurrent=150ms
Other
Equipment
CT Input
TRM
External or Internal
Bus-Coupler BFP
Backup Trip Command
Bus-Coupler Backup
OC Trip
QB1
QB2
b a
BI1
2400/1
QA1
NO
NC
CLOSED
OPEN
ALARM
FORCED
SSxx
DISABLE
ZEROCUR
BIM
CB Closing
Signal
³1
t
t=1s
IEC06000154 V1 EN-US
Figure 65: Bus coupler bay with one CT and a&b aux. contact from CB
en06000155.vsd
Zone A
Zone B
Bus-Coupler
Bay
REB 670
CTRLZA
CTRLZB
TRIP
CONNZA
CONNZB
Bxxx
I3PB1
BLKTR
TRZONE
TRBAY
BBP & BFP trip command to Bus-Coupler breaker
BOM
A/D
Parameter ZoneSel must
be set to "FixedToZA&-ZB"
tZeroCurrent=150ms
Other
Equipment
CT Input
TRM
External or Internal
Bus-Coupler BFP
Backup Trip Command
Bus-Coupler Backup
OC Trip
QB1
QB2
b
BI1
2400/1
QA1
ZEROCUR
BIM
CB Closing
Signal
³1
t
t=1s
&
IEC06000155 V1 EN-US
Figure 66: Bus coupler bay with one CT and b aux. contact only from CB
Section 6 1MRK 505 370-UEN D
Differential protection
124 Busbar protection REB670
Application manual