Functionality - ABB Relion 650 Series Technical Manual

1MRK 511 424-UEN B
8.2.7.2
Bay control REC650 2.2 IEC
Technical manual

Functionality

The interlocking for bus-coupler bay (ABC_BC) function is used for a bus-coupler
bay connected to a double busbar arrangement according to figure 72. The function
can also be used for a single busbar arrangement with transfer busbar or double
busbar arrangement without transfer busbar.
QB1 QB2
QC1
QA1
IEC04000514 V1 EN-US
Figure 72: Switchyard layout ABC_BC
WA1 (A)
WA2 (B)
WA7 (C)
QB20 QB7
QC2
en04000514.vsd
Section 8
Control
M13555-3 v8
163