ABB Relion 670 series - Signals from Bus-Coupler

For bay n, these conditions are valid:
AND
BB7_D_OP
VP_BB7_D
EXDU_BPB
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AND
AND
789OPTR (bay 1)
789OPTR (bay 2)
. . .
. . .
789OPTR (bay n-1)
VP789TR (bay 1)
VP789TR (bay 2)
. . .
. . .
VP789TR (bay n-1)
EXDU_BPB (bay 1)
EXDU_BPB (bay 2)
. . .
. . .
EXDU_BPB (bay n-1)
ANSI04000477 V1 EN
Figure 325: Signals from bypass busbar in line bay n
15.4.2.3 Signals from bus-coupler
If the busbar is divided by bus-section disconnectors into bus sections, the busbar-busbar
connection could exist via the bus-section disconnector and bus-coupler within the other
bus section.
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE ABC_BCABC_LINE ABC_BC
(WA1)A1
(WA2)B1
(WA7)C
C
B2
A2
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ANSI04000479 V1 EN
Figure 326: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Section 15 1MRK 506 369-UUS -
Control
702 Line distance protection REL670 2.2 ANSI
Application manual