ABB Relion 650 Series Applications Manual page 173

1MRK 505 287-UUS B
10.3.10.2 Signals from bypass busbar
To derive the signals:
Signal
BB7_D_OP
VP_BB7_D
EXDU_BPB
These signals from each line bay (ABC_LINE, 3) except that of the own bay are needed:
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 89: Signals from bypass busbar in line bay n
10.3.10.3 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.
Busbar protection REB650
Application manual
All line disconnectors on bypass WA7 except in the own bay are open.
The switch status of disconnectors on bypass busbar WA7 are valid.
No transmission error from any bay containing disconnectors on bypass
busbar WA7
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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© Copyright 2013 ABB. All rights reserved
BB7_D_OP
AND
VP_BB7_D
AND
EXDU_BPB
AND
en04000477_ansi.vsd
Section 10
Control
M13560-6 v4
M13560-31 v3
167