Single Circuit Breaker With Double Busbar, External Voltage Selection - ABB RELION RET670 Applications Manual

Section 15
Control
15.1.3.2
686

Single circuit breaker with double busbar, external voltage selection

Bus 1
Fuse
VT
bus Voltage
VREF1
Voltag
Line
e
V
VA/VB/
C
ANSI10000094 V1 EN-US
Figure 309: Connection of SESRSYN (25) 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 309.
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.
Bus 2
Fuse
VT
189
289
152
1/2/3
Fuse
VT
Line
1MRK 504 163-UUS A
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
ANSI10000094-1-en.vsd
Transformer protection RET670 2.2 ANSI
Application manual
M12325-3 v8