ABB RELION REB670, Applications Manual

Page: 378 / 554

12.4.3.4 Signals from bus-coupler
M13553-58 v5
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.
en04000484_ansi.vsd
Section 1 Section 2
A1A2_DC(BS)
B1B2_DC(BS)
ABC_BC ABC_BC
(WA1)A1
(WA2)B1
(WA7)C C
B2
A2
ANSI04000484 V1 EN-US
Figure 149: Busbars divided by bus-section disconnectors (circuit breakers)
To derive the signals:
Signal
BC_12_CL Another bus-coupler connection exists between busbar WA1 and WA2.
VP_BC_12 The switch status of BC_12 is valid.
EXDU_BC No transmission error from any bus-coupler bay (BC).
These signals from each bus-coupler bay (ABC_BC), except the own bay, are needed:
Signal
BC12CLTR A bus-coupler connection through the own bus-coupler exists between busbar WA1
and WA2.
VPBC12TR The switch status of BC_12 is valid.
EXDU_BC No transmission error from the bay that contains the above information.
These signals from each bus-section disconnector bay (A1A2_DC) are also 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
DCCLTR The bus-section disconnector is closed.
VPDCTR The switch status of bus-section disconnector DC is valid.
EXDU_DC No transmission error from the bay that contains the above information.
Section 12
1MRK 505 370-UUS A
Control
372 Busbar protection REB670 2.2 ANSI
Application manual