QB1 QB2
QC1
QA1
WA1 (A)
WA2 (B)
WA7 (C)
QB7QB20
QC2
en04000514.vsd
IEC04000514 V1 EN-US
Figure 151: Switchyard layout ABC_BC
12.4.3.2 Configuration
M13553-138 v4
The signals from the other bays connected to the bus-coupler module ABC_BC are described
below.
12.4.3.3 Signals from all feeders
M13553-6 v4
To derive the signals:
Signal
BBTR_OP No busbar transfer is in progress concerning this bus-coupler.
VP_BBTR The switch status is valid for all apparatuses involved in the busbar transfer.
EXDU_12 No transmission error from any bay connected to the WA1/WA2 busbars.
These signals from each line bay (ABC_LINE), each transformer bay (AB_TRAFO), and bus-
coupler bay (ABC_BC), except the own bus-coupler bay are needed:
Signal
QQB12OPTR QB1 or QB2 or both are open.
VPQB12TR The switch status of QB1 and QB2 are valid.
EXDU_12 No transmission error from the bay that contains the above information.
For bus-coupler bay n, these conditions are valid:
Section 12 1MRK 505 370-UEN D
Control
306 Busbar protection REB670
Application manual
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