ABB Relion 670 Series Applications Manual page 329

1MRK 511 358-UUS A
These signals from each double-breaker bay (DB_BUS) are needed:
Signal
189OPTR
289OPTR
VP189TR
VP289TR
EXDU_DB
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:
189OPTR (bay 1/sect.A1)
189OPTR (bay n/sect.A1)
VP189TR (bay 1/sect.A1)
VP189TR (bay n/sect.A1)
EXDU_DB (bay 1/sect.A1)
EXDU_DB (bay n/sect.A1)
ANSI04000499 V1 EN-US
Figure 147: Signals from double-breaker bays in section A1 to a bus-section disconnector
For a bus-section disconnector, these conditions from the A2 busbar section are valid:
189OPTR (bay 1/sect.A2)
189OPTR (bay n/sect.A2)
VP189TR (bay 1/sect.A2)
VP189TR (bay n/sect.A2)
EXDU_DB (bay 1/sect.A2)
EXDU_DB (bay n/sect.A2)
ANSI04000500 V1 EN-US
Figure 148: Signals from double-breaker bays in section A2 to a bus-section disconnector
For a bus-section disconnector, these conditions from the B1 busbar section are valid:
Application manual
189 is open.
289 is open.
The switch status of 189 is valid.
The switch status of 289 is valid.
No transmission error from the bay that contains the above information.
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AND
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AND
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AND
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S1DC_OP
AND
VPS1_DC
AND
EXDU_BB
AND
en04000499_ansi.vsd
S2DC_OP
VPS2_DC
EXDU_BB
en04000500_ansi.vsd
Section 13
Control
323