Double Busbar Arrangements With Two Bus-Section Breakers And Two Bus-Coupler Breakers - ABB REB670 Applications Manual

Section 6
Differential protection
6.1.4.9
144
Zone A
Zone B
REB 670
189
289
b
152
BI1
BIM
CB Closing
Signal
Bus-Coupler
Bay
CT Input
Other
Equipment
ANSI06000155 V1 EN
Figure 66: Bus coupler bay with one CT and b aux. contact only from CB
Double busbar arrangements with two bus-section breakers and two bus-
coupler breakers
This type of station is commonly used for GIS installations. It offers high operational
flexibility. For this type of stations, two schemes similar to the double busbar station
scheme can be used.
ZA1
ZB1
189 289 189 289 189 289 189
152
152 152 152
ANSI06000016 V1 EN
Figure 67: Example of typical GIS station layout
t=1s
t
OR
AND
Bxxx
BLKTR
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
152
152
289 189 289
152 152
1MRK 505 337-UUS -
TRIP
CONNZA
CONNZB
BOM
en06000155_ansi.vsd
ZA2
ZB2
189 289 189 289 189 289 189 289
152 152 152 152
xx06000016_ansi.vsd
Application manual
152