Signal
BC_12_CL Another bus-coupler connection exists between busbar WA1 and WA2.
VP_BC_12 The switch status of BC_12 is valid.
EXDU_BC No transmission error from any bus-coupler bay (BC).
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:
1MRK 511 423-UEN A Section 8
Control
Bay control REC650 2.2 IEC 137
Application manual
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