ABB Relion 650 Series Applications Manual page 152

Section 10
Control
These signals from each bus-section disconnector bay (A1A2_DC) are also needed. For B1B2_DC,
corresponding signals from busbar B are used. The same type of module (A1A2_DC) 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".
10.3.4.4 Signals in breaker and a half arrangement
The busbar grounding switch is only allowed to operate if all disconnectors of the bus-section are
open.
(WA1)A1
(WA2)B1
ANSI04000512 V1 EN-US
Figure 63: 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
10.3.5 Interlocking for bus-section breaker A1A2_BS (3)
10.3.5.1 Application
The interlocking for bus-section breaker (A1A2_BS ,3) function is used for one bus-section circuit
breaker between section 1 and 2 according to figure 64. The function can be used for different
busbars, which includes a bus-section circuit breaker.
146
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.
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Section 2
A2
B2
BB_ES
BH_LINE
en04000512_ansi.vsd
1MRK 505 287-UUS B
M15053-123 v3
IP14154-1 v2
M15110-3 v6
Busbar protection REB650
Application manual