ABB Relion 670 Series Applications Manual page 371

1MRK 511 401-UEN Rev. K
QB7OPTR (bay 1)
QB7OPTR (bay 2)
QB7OPTR (bay n-1)
VPQB7TR (bay 1)
VPQB7TR (bay 2)
VPQB7TR (bay n-1)
EXDU_BPB (bay 1)
EXDU_BPB (bay 2)
EXDU_BPB (bay n-1)
IEC04000477 V1 EN-US
Figure 165: Signals from bypass busbar in line bay n
15.4.2.3 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.
(WA1)A1
(WA2)B1
(WA7)C
IEC04000479 V1 EN-US
Figure 166: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
BC_12_CL
BC_17_OP
BC_17_CL
BC_27_OP
BC_27_CL
VP_BC_12
VP_BC_17
VP_BC_27
EXDU_BC
These signals from each bus-coupler bay (ABC_BC) are needed:
Bay control REC670
Application manual
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Section 1
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE ABC_BC
A bus-coupler connection exists between busbar WA1 and WA2.
No bus-coupler connection between busbar WA1 and WA7.
A bus-coupler connection exists between busbar WA1and WA7.
No bus-coupler connection between busbar WA2 and WA7.
A bus-coupler connection exists between busbar WA2 and WA7.
The switch status of BC_12 is valid.
The switch status of BC_17 is valid.
The switch status of BC_27 is valid.
No transmission error from any bus-coupler bay (BC).
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BB7_D_OP
&
VP_BB7_D
&
EXDU_BPB
&
en04000477.vsd
Section 2
ABC_LINE ABC_BC
en04000479.vsd
Section 15
M13560-31 v4
A2
B2
C
Control
365