Signals In Double-Breaker Arrangement - ABB REB670 Applications Manual

1MRK 505 337-UUS -
12.4.6.3
Application manual

Signals in double-breaker arrangement

If the busbar is divided by bus-section disconnectors, the condition for the busbar
disconnector bay no other disconnector connected to the bus-section must be made by a
project-specific logic.
The same type of module (A1A2_DC) is used for different busbars, that is, for both bus-
section disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, corresponding
signals from busbar B are used.
Section 1
(WA1)A1
(WA2)B1
DB_BUS DB_BUS
ANSI04000498 V1 EN
Figure 150: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
S1DC_OP All disconnectors on bus-section 1 are open.
S2DC_OP All disconnectors on bus-section 2 are open.
VPS1_DC The switch status of all disconnectors on bus-section 1 is valid.
VPS2_DC The switch status of all disconnectors on bus-section 2 is valid.
EXDU_BB No transmission error from double-breaker bay (DB) that contains the above
information.
These signals from each double-breaker bay (DB_BUS) are needed:
Signal
189OPTR 189 is open.
289OPTR 289 is open.
VP189TR The switch status of 189 is valid.
VP289TR The switch status of 289 is valid.
EXDU_DB No transmission error from the bay that contains the above information.
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
DB_BUS DB_BUS
en04000498_ansi.vsd
Section 12
Control
A2
B2
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