ABB Relion REC670 Applications Manual page 280

Section 13
Control
QB12OPTR (bay 1)
QB12OPTR (bay 2)
QB12OPTR (bay n-1)
VPQB12TR (bay 1)
VPQB12TR (bay 2)
VPQB12TR (bay n-1)
EXDU_12 (bay 1)
EXDU_12 (bay 2)
EXDU_12 (bay n-1)
IEC04000481 V1 EN-US
Figure 116: Signals from any bays in bus-coupler bay n
If the busbar is divided by bus-section disconnectors into bus-sections, the signals BBTR are
connected in parallel - if both bus-section disconnectors are closed. So for the basic project-
specific logic for BBTR above, add this logic:
(WA1)A1
(WA2)B1
(WA7)C
IEC04000482 V1 EN-US
Figure 117: Busbars divided by bus-section disconnectors (circuit breakers)
The following signals from each bus-section disconnector bay (A1A2_DC) are needed. For
B1B2_DC, corresponding signals from busbar B are used. The same type of module (A1A2_DC)
is used for different busbars, that is, for both bus-section disconnector A1A2_DC and B1B2_DC.
Signal
DCOPTR
VPDCTR
EXDU_DC
If the busbar is divided by bus-section circuit breakers, the signals from the bus-section
coupler bay (A1A2_BS), rather than the bus-section disconnector bay (A1A2_DC), have to be
used. For B1B2_BS, corresponding signals from busbar B are used. The same type of module
(A1A2_BS) is used for different busbars, that is, for both bus-section circuit breakers A1A2_BS
and B1B2_BS.
Signal
S1S2OPTR
VPS1S2TR
EXDU_BS
274
. . .
. . .
. . .
. . .
. . .
. . .
Section 1
A1A2_DC(BS)
B1B2_DC(BS)
ABC_LINE ABC_BC
The bus-section disconnector is open.
The switch status of bus-section disconnector DC is valid.
No transmission error from the bay that contains the above information.
No bus-section coupler connection between bus-sections 1 and 2.
The switch status of bus-section coupler BS is valid.
No transmission error from the bay that contains the above information.
BBTR_OP
&
VP_BBTR
&
EXDU_12
&
en04000481.vsd
Section 2
ABC_BC
ABC_LINE
1MRK 511 358-UEN A
A2
B2
C
AB_TRAFO
en04000482.vsd
Application manual