Signals In 1 1/2 Breaker Arrangement; Interlocking For Double Cb Bay Db; Application - ABB Relion REC670 Applications Manual

Section 13
Control
is used for different busbars, that is, for both bus-section disconnectors A1A2_DC and
B1B2_DC.
Signal
DCOPTR
VPDCTR
EXDU_DC
The logic is identical to the double busbar configuration described in section "Signals in single
breaker arrangement".
13.4.7.4

Signals in 1 1/2 breaker arrangement

The busbar earthing switch is only allowed to operate if all disconnectors of the bus-section
are open.
(WA1)A1
(WA2)B1
IEC04000512 V1 EN-US
Figure 147: Busbars divided by bus-section disconnectors (circuit breakers)
The project-specific logic are the same as for the logic for the double busbar configuration
described in section "Signals in single breaker arrangement".
Signal
BB_DC_OP
VP_BB_DC
EXDU_BB
13.4.8

Interlocking for double CB bay DB

13.4.8.1

Application

The interlocking for a double busbar double circuit breaker bay including DB_BUS_A,
DB_BUS_B and DB_LINE functions are used for a line connected to a double busbar
arrangement according to figure 148.
294
The bus-section disconnector is open.
The switch status of bus-section disconnector DC is valid.
No transmission error from the bay that contains the above information.
Section 1
A1A2_DC(BS)
B1B2_DC(BS)
BB_ES
BH_LINE
All disconnectors on this part of the busbar are open.
The switch status of all disconnectors on this part of the busbar is valid.
No transmission error from any bay that contains the above information.
Section 2
A2
B2
BB_ES
BH_LINE
en04000512.vsd
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Application manual