Signals In 1 1/2 Breaker Arrangement - ABB REG670 Applications Manual

Section 15
Control
15.3.7.4
544
Section 1
(WA1)A1
(WA2)B1
BB_ES
DB_BUS
IEC04000511 V1 EN
Figure 277: 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:
Signal
QB1OPTR QB1 is open.
QB2OPTR QB2 is open.
VPQB1TR The switch status of QB1 is valid.
VPQB2TR The switch status of QB2 is valid.
EXDU_DB No transmission error from the bay that contains the above information.
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 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".

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.
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Section 2
A1A2_DC(BS)
B1B2_DC(BS)
BB_ES
DB_BUS
en04000511.vsd
1MRK 502 071-UEN -
A2
B2
Application manual