ABB Relion REC670 - Page 298

QB2OPTR(QB220OTR)(bay 1/sect.B1)
BB_DC_OP
VP_BB_DC
EXDU_BB
en04000508.vsd
QB2OPTR (QB220OTR)(bay n/sect.B1)
. . .
. . .
. . .
VPQB2TR(VQB220TR) (bay 1/sect.B1)
VPQB2TR(VQB220TR) (bay n/sect.B1)
VPDCTR (B1/B2)
EXDU_BB (bay n/sect.B1)
. . .
. . .
. . .
. . .
. . .
. . .
&
&
&
DCOPTR (B1/B2)
EXDU_BB (bay 1/sect.B1)
EXDU_DC (B1/B2)
IEC04000508 V1 EN-US
Figure 143: Signals from any bays in section B1 to a busbar earthing switch in the same
section
For a busbar earthing switch, these conditions from the B2 busbar section are valid:
QB2OPTR(QB220OTR) (bay 1/sect.B2)
BB_DC_OP
VP_BB_DC
EXDU_BB
en04000509.vsd
QB2OPTR(QB220OTR) (bay n/sect.B2)
. . .
. . .
. . .
VPQB2TR(VQB220TR) (bay 1/sect.B2)
VPQB2TR(VQB220TR) (bay n/sect.B2)
VPDCTR (B1/B2)
EXDU_BB (bay n/sect.B2)
. . .
. . .
. . .
. . .
. . .
. . .
&
&
&
DCOPTR (B1/B2)
EXDU_BB (bay 1/sect.B2)
EXDU_DC (B1/B2)
IEC04000509 V1 EN-US
Figure 144: Signals from any bays in section B2 to a busbar earthing switch in the same
section
For a busbar earthing switch on bypass busbar C, these conditions are valid:
Section 13 1MRK 511 358-UEN A
Control
292
Application manual