Signals In Double-Breaker Arrangement - ABB REC670 Applications Manual

Section 14
Control
14.4.7.3
402
For a busbar grounding switch on bypass busbar C, these conditions are valid:
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 164: Signals from bypass busbar to busbar grounding switch

Signals in double-breaker arrangement

The busbar grounding switch is only allowed to operate if all disconnectors of the bus
section are open.
Section 1
(WA1)A1
(WA2)B1
A1A2_DC(BS)
B1B2_DC(BS)
BB_ES
DB_BUS
ANSI04000511 V1 EN-US
Figure 165: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
BB_DC_OP All disconnectors of this part of the busbar are open.
VP_BB_DC The switch status of all disconnectors on this part of the busbar are valid.
EXDU_BB No transmission error from any bay that contains the above information.
These signals from each double-breaker bay (DB_BUS) are needed:
AND
AND
AND
en04000510_ansi.vsd
Section 2
A2
B2
BB_ES
DB_BUS
en04000511_ansi.vsd
1MRK 511 401-UUS A
BB_DC_OP
VP_BB_DC
EXDU_BB
Bay control REC670 2.2 ANSI
Application manual
M15053-83 v4