Signals From Bus-Coupler - ABB Relion REC670 Applications Manual

1MRK 511 358-UEN A
For a bus-coupler bay in section 1, these conditions are valid:
BBTR_OP (sect.1)
DCOPTR (A1A2)
DCOPTR (B1B2)
BBTR_OP (sect.2)
VP_BBTR (sect.1)
VPDCTR (A1A2)
VPDCTR (B1B2)
VP_BBTR (sect.2)
EXDU_12 (sect.1)
EXDU_DC (A1A2)
EXDU_DC (B1B2)
EXDU_12 (sect.2)
IEC04000483 V1 EN-US
Figure 118: Signals to a bus-coupler bay in section 1 from any bays in each section
For a bus-coupler bay in section 2, the same conditions as above are valid by changing section
1 to section 2 and vice versa.
13.4.3.4

Signals from bus-coupler

If the busbar is divided by bus-section disconnectors into bus-sections, the signals BC_12 from
the busbar coupler of the other busbar section must be transmitted to the own busbar coupler
if both disconnectors are closed.
(WA1)A1
(WA2)B1
(WA7)C
IEC04000484 V1 EN-US
Figure 119: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
BC_12_CL
VP_BC_12
EXDU_BC
These signals from each bus-coupler bay (ABC_BC), except the own bay, are needed:
Signal
BC12CLTR
VPBC12TR
EXDU_BC
Application manual
>1
Section 1
A1A2_DC(BS)
B1B2_DC(BS)
ABC_BC
Another bus-coupler connection exists between busbar WA1 and WA2.
The switch status of BC_12 is valid.
No transmission error from any bus-coupler bay (BC).
A bus-coupler connection through the own bus-coupler exists between busbar
WA1 and WA2.
The switch status of BC_12 is valid.
No transmission error from the bay that contains the above information.
BBTR_OP
&
VP_BBTR
&
EXDU_12
&
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Section 2
A2
B2
C
ABC_BC
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Section 13
Control
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