ABB REG670 - Page 542

Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
DB_BUS DB_BUSDB_BUS DB_BUS
(WA1)A1
(WA2)B1 B2
A2
en04000498.vsd
IEC04000498 V1 EN
Figure 264: 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
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.
The logic is identical to the double busbar configuration “Signals in single breaker
arrangement”.
For a bus-section disconnector, these conditions from the A1 busbar section are valid:
Section 15 1MRK 502 071-UEN -
Control
536 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual