ABB Relion 670 series - Interlocking for Bus-Coupler Bay ABC_BC (3)

15.4.3 Interlocking for bus-coupler bay ABC_BC (3)
15.4.3.1 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
328. The function can also
be used for a single busbar arrangement with transfer busbar or double busbar
arrangement without transfer busbar.
189 289
189G
WA1 (A)
WA2 (B)
WA7 (C)
789
2089
289G
en04000514_ansi.vsd
152
ANSI04000514 V1 EN
Figure 328: Switchyard layout ABC_BC (3)
15.4.3.2 Configuration
The signals from the other bays connected to the bus-coupler module ABC_BC are
described below.
15.4.3.3 Signals from all feeders
To derive the signals:
Signal
BBTR_OP No busbar transfer is in progress concerning this bus-coupler.
VP_BBTR The switch status is valid for all apparatuses involved in the busbar transfer.
EXDU_12 No transmission error from any bay connected to the WA1/WA2 busbars.
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:
1MRK 506 369-UUS - Section 15
Control
Line distance protection REL670 2.2 ANSI 707
Application manual