ABB Relion 670 Series Applications Manual page 387

1MRK 511 401-UEN Rev. K
QB2OPTR (QB220OTR)(bay 1/sect.B2)
QB2OPTR (QB220OTR)(bay n/sect.B2)
VPQB2TR(VQB220TR) (bay 1/sect.B2)
VPQB2TR(VQB220TR) (bay n/sect.B2)
IEC04000497 V1 EN-US
Figure 185: Signals from any bays in section B2 to a bus-section disconnector
15.4.6.3 Signals in double-breaker arrangement
If the busbar is divided by bus-section disconnectors, the condition for the busbar
disconnector bay
project-specific logic.
The same type of module (A1A2_DC) is used for different busbars, that is, for both bus-section
disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, corresponding signals from busbar B
are used.
(WA1)A1
(WA2)B1
IEC04000498 V1 EN-US
Figure 186: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
S1DC_OP
S2DC_OP
VPS1_DC
VPS2_DC
EXDU_BB
These signals from each double-breaker bay (DB_BUS) are needed:
Bay control REC670
Application manual
. . .
. . .
. . .
DCOPTR (B2/B3)
. . .
. . .
. . .
VPDCTR (B2/B3)
EXDU_BB (bay 1/sect.B2)
. . .
. . .
. . .
EXDU_BB (bay n/sect.B2)
EXDU_DC (B2/B3)
no other disconnector connected to the bus-section must be made by a
Section 1
A1A2_DC(BS)
B1B2_DC(BS)
DB_BUS DB_BUS
All disconnectors on bus-section 1 are open.
All disconnectors on bus-section 2 are open.
The switch status of all disconnectors on bus-section 1 is valid.
The switch status of all disconnectors on bus-section 2 is valid.
No transmission error from double-breaker bay (DB) that contains the above
information.
© Copyright 2017 Hitachi Power Grids. All rights reserved
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Section 2
A2
B2
DB_BUS DB_BUS
en04000498.vsd
Section 15
Control
S2DC_OP
VPS2_DC
EXDU_BB
en04000497.vsd
M13542-80 v5
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