ABB REQ650 User Manual

10.1.3.2 Single circuit breaker with double busbar, external voltage selection
Bus 1
Bus 2
QB1
QB2
Line
QA1
Fuse
VT
Fuse
VT
Fuse
VT
IEC08000025_2_en.vsd
UBus
SESRSYN
U3PBB1*
U3PBB2*
U3PLN1*
U3PLN2*
BLOCK
BLKSYNCH
BLKSC
BLKENERG
B1QOPEN
B1QCLD
B2QOPEN
B2QCLD
LN1QOPEN
LN1QCLD
LN2QOPEN
LN2QCLD
UB1OK
UB1FF
UB2OK
UB2FF
ULN1OK
ULN1FF
ULN2OK
ULN2FF
STARTSYN
TSTSYNCH
TSTSC
TSTENERG
AENMODE
MENMODE
SYNOK
AUTOSYOK
AUTOENOK
MANSYOK
MANENOK
TSTSYNOK
TSTAUTSY
TSTMANSY
TSTENOK
USELFAIL
B1SEL
B2SEL
LN1SEL
LN2SEL
SYNPROGR
SYNFAIL
FRDIFSYN
FRDERIVA
UOKSC
UDIFFSC
FRDIFFA
PHDIFFA
FRDIFFM
PHDIFFM
INADVCLS
UDIFFME
FRDIFFME
PHDIFFME
UBUS
ULINE
MODEAEN
MODEMEN
SMAI
SMAI
ULine
GRP_OFF
IEC08000025 V2 EN
Figure 84: Connection of SESRSYN function block in a single breaker, double
busbar arrangement with external voltage selection
In this type of arrangement no internal voltage selection is required. The voltage
selection is made by external relays typically connected according to figure 84.
Suitable voltage and VT fuse failure supervision from the two busbars are selected
based on the position of the busbar disconnectors. This means that the connections to
the function block will be the same as for the single busbar arrangement. The voltage
selection parameter CBConfig is set to No voltage sel.
1MRK 505 291-UEN A Section 10
Control
191
Application manual

ABB REQ650 Specifications

General

Type	Protection Relay
Product ID	REQ650
Rated Frequency	50/60 Hz
Display	LCD
Mounting	Panel Mount
Communication Protocols	IEC 61850, Modbus
Protection Functions	Overcurrent, Earth Fault
Operating Temperature Range	-25 to +55 °C
Power Supply	24-250 V DC / 48-265 V AC