ABB RELION RET670 Applications Manual page 753

1MRK 504 163-UUS A
Transformer protection RET670 2.2 ANSI
Application manual
189OPTR (bay 1/sect.A2)
. . .
. . .
. . .
189OPTR (bay n/sect.A2)
DCOPTR (A1/A2)
VP189TR (bay 1/sect.A2)
. . .
. . .
. . .
VP189TR (bay n/sect.A2)
VPDCTR (A1/A2)
EXDU_BB (bay 1/sect.A2)
. . .
. . .
. . .
EXDU_BB (bay n/sect.A2)
EXDU_DC (A1/A2)
ANSI04000507 V1 EN-US
Figure 354: Signals from any bays in section A2 to a busbar grounding switch in
the same section
For a busbar grounding switch, these conditions from the B1 busbar section are valid:
BB_DC_OP
AND
VP_BB_DC
AND
EXDU_BB
AND
en04000507_ansi.vsd
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