ABB RELION 650 SERIES, Applications Manual

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These signals from each bus-coupler bay (ABC_BC), except the own bay, are needed:
Signal
BC12CLTR A bus-coupler connection through the own bus-coupler exists between busbar
WA1 and WA2.
VPBC12TR The switch status of BC_12 is valid.
EXDU_BC No transmission error from the bay that contains the above information.
These signals from each bus-section disconnector bay (A1A2_DC) are also needed. For B1B2_DC,
corresponding signals from busbar B are used. The same type of module (A1A2_DC) is used for
different busbars, that is, for both bus-section disconnector A1A2_DC and B1B2_DC.
Signal
DCCLTR The bus-section disconnector is closed.
VPDCTR The switch status of bus-section disconnector DC is valid.
EXDU_DC No transmission error from the bay that contains the above information.
If the busbar is divided by bus-section circuit breakers, the signals from the bus-section coupler
bay (A1A2_BS), rather than the bus-section disconnector bay (A1A2_DC), must be used. For
B1B2_BS, corresponding signals from busbar B are used. The same type of module (A1A2_BS) is
used for different busbars, that is, for both bus-section circuit breakers A1A2_BS and B1B2_BS.
Signal
S1S2CLTR A bus-section coupler connection exists between bus sections 1 and 2.
VPS1S2TR The switch status of bus-section coupler BS is valid.
EXDU_BS No transmission error from the bay containing the above information.
For a bus-coupler bay in section 1, these conditions are valid:
AND
BC_12_CL
VP_BC_12
EXDU_BC
en04000485_ansi.vsd
AND
AND
DCCLTR (A1A2)
DCCLTR (B1B2)
BC12CLTR (sect.2)
VPDCTR (A1A2)
VPDCTR (B1B2)
VPBC12TR (sect.2)
EXDU_DC (A1A2)
EXDU_DC (B1B2)
EXDU_BC (sect.2)
ANSI04000485 V1 EN-US
Figure 85: Signals to a bus-coupler bay in section 1 from a bus-coupler bay in another
section
For a bus-coupler bay in section 2, the same conditions as above are valid by changing section 1 to
section 2 and vice versa.
Section 10 1MRK 505 287-UUS B
Control
162 Busbar protection REB650
Application manual
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