Signals From Bus-Coupler - ABB RELION 670 SERIES Applications Manual

Section 15
Control
15.4.2.3
702
For bay n, these conditions are valid:
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

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
(WA1)A1
(WA2)B1
(WA7)C
ABC_LINE
ANSI04000479 V1 EN
Figure 326: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
AND
AND
AND
A1A2_DC(BS)
B1B2_DC(BS)
ABC_BC ABC_LINE
1MRK 506 369-UUS -
BB7_D_OP
VP_BB7_D
EXDU_BPB
en04000477_ansi.vsd
Section 2
ABC_BC
en04000479_ansi.vsd
Line distance protection REL670 2.2 ANSI
Application manual
A2
B2
C