ABB RELION RET670 - Page 754

289OPTR(22089OTR)(bay 1/sect.B1)
BB_DC_OP
VP_BB_DC
EXDU_BB
en04000508_ansi.vsd
289PTR (22089OTR)(bay n/sect.B1)
. . .
. . .
. . .
VP289TR(V22089TR) (bay 1/sect.B1)
VP289TR(V22089TR) (bay n/sect.B1)
VPDCTR (B1/B2)
EXDU_BB (bay n/sect.B1)
. . .
. . .
. . .
. . .
. . .
. . .
AND
AND
AND
DCOPTR (B1/B2)
EXDU_BB (bay 1/sect.B1)
EXDU_DC (B1/B2)
ANSI04000508 V1 EN-US
Figure 355: Signals from any bays in section B1 to a busbar grounding switch in
the same section
For a busbar grounding switch, these conditions from the B2 busbar section are valid:
289OPTR(22089OTR) (bay 1/sect.B2)
BB_DC_OP
VP_BB_DC
EXDU_BB
en04000509_ansi.vsd
289OPTR(22089OTR) (bay n/sect.B2)
. . .
. . .
. . .
VP289TR(V22089TR) (bay 1/sect.B2)
VP289TR(V22089TR) (bay n/sect.B2)
VPDCTR (B1/B2)
EXDU_BB (bay n/sect.B2)
. . .
. . .
. . .
. . .
. . .
. . .
AND
DCOPTR (B1/B2)
EXDU_BB (bay 1/sect.B2)
EXDU_DC (B1/B2)
AND
AND
ANSI04000509 V1 EN-US
Figure 356: Signals from any bays in section B2 to a busbar grounding switch in
the same section
Section 15 1MRK 504 163-UUS A
Control
748 Transformer protection RET670 2.2 ANSI
Application manual