ABB RET670 Product Manual page 39

ABB
Transformer protection RET670
Pre-configured
Product version: 1.1
BBP-TRIP
BLOCK LW 3I>
BBP STEP
ST BFP 3PH
BUCH TRIP
SUDDEN P
OT TRIP
WT TRIP
OT WARN
=2-Q0-OPEN
WT WARN
=2-Q0-CL
OIL LOW =2-Q0-SPR UNCH
GAS ALARM
TC IN MAN
TC IN AUTO
TC IN LOC.
TC RAISE
TC LOWER
HV BUSBAR TRIP
MV BUSBAR TRIP
MAN SC OK
BBP-TRIP
IRF
-
Figure 20. Typical connection diagram for two winding transformer in a multi breaker
arrangement. Note! Including IO for control option.
QB1-OPEN
QB1-CL
QB6-OPEN
QB6-CL
TRM1:4-6
CLOSE QA1
CLOSE Reinf
TRIP Reinf
=1-QA1-OPEN
=1-QA1-CL
=1-QA1-SPR UNCH
TRM1:1-3
CLOSE Reinf
TRIP QA1
TRIP Reinf
QB6-OPEN
QB6-CL
QB61-OPEN
QB61-CL
QB9-OPEN
QB9-CL
TRM2:4
=
TAP POS
MIM1:1
TRM2:5
TRM1:10-12
MCB-OK
TRM2:1-3
TRIP Reinf
QA1-OPEN
QA1-CL
SPR UNCH
CLOSE QA1
CLOSE Reinf
TRIP QA1
TRIP Reinf
TRM2:10
MCB OK
+
IEC05000263 V1 EN
1MRK 504 091-BEN B
BUS A
-QB1
-QA1
C
C
TRIP QA1
T
C
MAIN 2 TRIP
T
C
-BI1
P1
CLOSE QA1
TO MAIN 2
MAIN 2 TRIP
TO BB PROT
-QB6
-QB9
Q
O
Q
W
-BU1
MCB OR
FUSE
-BI1
TO BUS PROT
TO MAIN 2 RELAY
P1
-QA1
C
C
T
C
T
C
-BU1
en05000263.vsd
Issued: June 2010
-QB62
-BI1
P1
TO MAIN 2
-QA1
C
C
T
C
T
C
-QB61
-T1
39