ABB Relion 670 Series Applications Manual page 325

1MRK 505 370-UUS Rev. K
Signal
789OPTR
VP789TR
EXDU_BPB
For bay n, these conditions are valid:
789OPTR (bay 1)
789OPTR (bay 2)
789OPTR (bay n-1)
VP789TR (bay 1)
VP789TR (bay 2)
VP789TR (bay n-1)
EXDU_BPB (bay 1)
EXDU_BPB (bay 2)
EXDU_BPB (bay n-1)
ANSI04000477 V1 EN-US
Figure 151: Signals from bypass busbar in line bay n
12.4.2.3 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
ANSI04000479 V1 EN-US
Figure 152: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Busbar protection REB670
Application manual
789 is open
The switch status for 789 is valid.
No transmission error from the bay that contains the above information.
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Section 1
ABC_LINE ABC_BC
© 2017 - 2021 Hitachi Power Grids. All rights reserved
BB7_D_OP
AND
VP_BB7_D
AND
EXDU_BPB
AND
en04000477_ansi.vsd
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE
A2
B2
C
ABC_BC
en04000479_ansi.vsd
Section 12
Control
M13560-31 v4
319