ABB Relion 670 Series Applications Manual page 340

Section 14
Control
14.4.3.1 Application
The interlocking for bus-coupler bay (ABC_BC, 3) function is used for a bus-coupler bay connected
to a double busbar arrangement according to figure 139. The function can also be used for a single
busbar arrangement with transfer busbar or double busbar arrangement without transfer busbar.
189
152
ANSI04000514 V1 EN-US
Figure 139: Switchyard layout ABC_BC (3)
14.4.3.2 Configuration
The signals from the other bays connected to the bus-coupler module ABC_BC are described
below.
14.4.3.3 Signals from all feeders
To derive the signals:
Signal
BBTR_OP
VP_BBTR
EXDU_12
These signals from each line bay (ABC_LINE), each transformer bay (AB_TRAFO), and bus-coupler
bay (ABC_BC), except the own bus-coupler bay are needed:
Signal
Q1289OPTR
VP1289TR
EXDU_12
For bus-coupler bay n, these conditions are valid:
334
2089
789
289
189G
289G
en04000514_ansi.vsd
No busbar transfer is in progress concerning this bus-coupler.
The switch status is valid for all apparatuses involved in the busbar transfer.
No transmission error from any bay connected to the WA1/WA2 busbars.
189 or 289 or both are open.
The switch status of 189 and 289 are valid.
No transmission error from the bay that contains the above information.
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WA1 (A)
WA2 (B)
WA7 (C)
1MRK 511 401-UUS F
M13555-3 v8
M13553-138 v4
M13553-6 v4
Bay control REC670
Application manual