15.3.4.2 Signals from bus-coupler
If the busbar is divided by bus-section disconnectors into bus-sections, the busbar-
busbar connection could exist via the bus-section disconnector and bus-coupler within
the other bus-section.
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
AB_TRAFO ABC_BCAB_TRAFO ABC_BC
(WA1)A1
(WA2)B1
(WA7)C C
B2
A2
en04000487.vsd
IEC04000487 V1 EN
Figure 253: Busbars divided by bus-section disconnectors (circuit breakers)
The project-specific logic for input signals concerning bus-coupler are the same as the
specific logic for the line bay (ABC_LINE):
Signal
BC_12_CL A 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 bus-coupler bay (BC).
The logic is identical to the double busbar configuration “Signals from bus-coupler“.
15.3.4.3 Configuration setting
If there are no second busbar B and therefore no QB2 disconnector, then the
interlocking for QB2 is not used. The state for QB2, QC21, BC_12 are set to open by
setting the appropriate module inputs as follows. In the functional block diagram, 0
and 1 are designated 0=FALSE and 1=TRUE:
• QB2_OP = 1
• QB2QB2_CL = 0
• QC21_OP = 1
• QC21_CL = 0
• BC_12_CL = 0
• VP_BC_12 = 1
If there is no second busbar B at the other side of the transformer and therefore no QB4
disconnector, then the state for QB4 is set to open by setting the appropriate module
inputs as follows:
1MRK 502 071-UEN - Section 15
Control
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 527
Application manual
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