ABB Relion 670 Series Applications Manual page 361

1MRK 511 401-UUS F
789OPTR (bay 1)
. . .
. . .
. . .
789OPTR (bay n)
VP789TR (bay 1)
. . .
. . .
. . .
VP789TR (bay n)
EXDU_BB (bay 1)
. . .
. . .
. . .
EXDU_BB (bay n)
ANSI04000510 V1 EN-US
Figure 169: Signals from bypass busbar to busbar grounding switch
14.4.7.3 Signals in double-breaker arrangement
The busbar grounding switch is only allowed to operate if all disconnectors of the bus section are
open.
(WA1)A1
(WA2)B1
ANSI04000511 V1 EN-US
Figure 170: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
BB_DC_OP
VP_BB_DC
EXDU_BB
These signals from each double-breaker bay (DB_BUS) are needed:
Signal
189OPTR
289OPTR
VP189TR
VP289TR
EXDU_DB
Bay control REC670
Application manual
Section 1
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
BB_ES
DB_BUS DB_BUS
All disconnectors of this part of the busbar are open.
The switch status of all disconnectors on this part of the busbar are valid.
No transmission error from any bay that contains the above information.
189 is open.
289 is open.
The switch status of 189 is valid.
The switch status of 289 is valid.
No transmission error from the bay that contains the above information.
© Copyright 2017 ABB. All rights reserved
BB_DC_OP
AND
VP_BB_DC
AND
EXDU_BB
AND
en04000510_ansi.vsd
A2
B2
BB_ES
en04000511_ansi.vsd
Section 14
Control
M15053-83 v4
355