ABB Relion 670 Series Applications Manual page 277

1MRK 505 370-UUS Rev. K
12.1.3.3 Single circuit breaker with double busbar, internal voltage selection
V REF 1
V REF 2
VA/VB/VC
ANSI10000095 V1 EN-US
Figure 129: Connection of the SESRSYN function block in a single breaker, double busbar
When internal voltage selection is needed, the voltage transformer circuit connections are made
according to figure 129. The voltage from the busbar 1 VT is connected to V3PB1 and the voltage from
busbar 2 is connected to V3PB2. The voltage from the line VT is connected to V3PL1. The positions of
the disconnectors and VT fuses shall be connected as shown in figure 129. The voltage selection
parameter CBConfig is set to Double bus.
Busbar protection REB670
Application manual
Bus 1
Bus 2
Fuse
bus1 Voltage
VT
Fuse
bus2 Voltage
VT
189
152
lineVoltage /1/2/3
Fuse
VT
Line
arrangement with internal voltage selection
© 2017 - 2021 Hitachi Power Grids. All rights reserved
289
SESRSYN (25)
V3PB1* SYNOK
V3PB2* AUTOSYOK
V3PL1* AUTOENOK
V3PL2* MANSYOK
BLOCK MANENOK
BLKSYNCH TSTSYNOK
BLKSC TSTAUTSY
BLKENERG TSTMANSY
BUS1_OP TSTENOK
BUS1_CL VSELFAIL
BUS2_OP B1SEL
BUS2_CL B2SEL
LINE1_OP L1SEL
LINE1_CL L2SEL
LINE2_OP SYNPROGR
LINE2_CL SYNFAIL
VB1OK VOKSYN
VB1FF VDIFFSYN
VB2OK FRDIFSYN
VB2FF FRDIFFOK
VL1OK FRDERIVA
VL1FF VOKSC
VL2OK VDIFFSC
VL2FF FRDIFFA
STARTSYN PHDIFFA
TSTSYNCH FRDIFFM
TSTSC PHDIFFM
TSTENERG INADVCLS
AENMODE VDIFFME
MENMODE FRDIFFME
PHDIFFME
Vbus
VLine
MODEAEN
MODEMEN
ANSI10000095-1-en.vsd
Section 12
Control
M12326-3 v7
271