is used for different busbars, that is, for both bus-section disconnectors A1A2_DC and
B1B2_DC.
Signal
DCOPTR The bus-section disconnector is open.
VPDCTR The switch status of bus-section disconnector DC is valid.
EXDU_DC No transmission error from the bay that contains the above information.
The logic is identical to the double busbar configuration described in section “Signals in single
breaker arrangement”.
12.4.7.4 Signals in 1 1/2 breaker arrangement
M15053-123 v4
The busbar earthing switch is only allowed to operate if all disconnectors of the bus-section
are open.
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
BB_ESBB_ES
BH_LINE
(WA1)A1
(WA2)B1 B2
A2
en04000512.vsd
BH_LINE
IEC04000512 V1 EN-US
Figure 183: 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 All disconnectors on this part of the busbar are open.
VP_BB_DC The switch status of all disconnectors on this part of the busbar is valid.
EXDU_BB No transmission error from any bay that contains the above information.
12.4.8 Interlocking for double CB bay DB
IP14167-1 v2
12.4.8.1 Application
M13585-3 v10
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
184.
1MRK 505 370-UEN D Section 12
Control
Busbar protection REB670 327
Application manual
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