ABB RELION 670 Series Applications Manual page 131

1MRK 505 337-UUS A
189
b a
289
152
989
Feeder Bay
ANSI06000151 V1 EN-US
Figure 62: Feeder bay where a&b aux. contacts are used
Application manual
Disconnector aux. contact timing
(Aux. contact a timing is only crucial when Scheme2_INX is used)
Zone A
Main
Open
contact
Zone B
Aux. a
Open
contact
Aux. b
Closed Open
contact
SSxx
DISABLE
CLOSED
NO
NC
ALARM
FORCED
b a
SSxx
DISABLE
CLOSED
NO
NC
ALARM
FORCED
BIM
External or Internal
Feeder BFP Backup Trip
Command
Feeder Backup
OC Trip
CT Input
A/D
Other
TRM
Equipment
BBP & BFP trip command to feeder breaker
Closed
Closed
OPEN
Set Parameter
ZoneSel="CtrlIncludes"
OPEN
Bxxx
BLKTR
TRIP
CTRLZA
CONNZA
CTRLZB
CONNZB
TRZONE
TRBAY
I3PB1
en06000151_ansi.vsd
REB 670
BOM
Section 6
Differential protection
125