ABB Relion 670 Series Applications Manual page 374

Section 15
Control
• BB7_D_OP = 1
• BC_17_OP = 1
• BC_17_CL = 0
• BC_27_OP = 1
• BC_27_CL = 0
• EXDU_BPB = 1
• VP_BB7_D = 1
• VP_BC_17 = 1
• VP_BC_27 = 1
If there is no second busbar WA2 and therefore no QB2 disconnector, then the interlocking for
QB2 is not used. The state for QB2, QC21, BC_12, BC_27 are set to open by setting the
appropriate module inputs as follows. In the functional block diagram, 0 and 1 are designated
0=FALSE and 1=TRUE:
• QB2_OP = 1
• QB2_CL = 0
• QC21_OP = 1
• QC21_CL = 0
• BC_12_CL = 0
• BC_27_OP = 1
• BC_27_CL = 0
• VP_BC_12 = 1
15.4.3 Interlocking for bus-coupler bay ABC_BC
15.4.3.1 Application
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 168. The function can also be
used for a single busbar arrangement with transfer busbar or double busbar arrangement
without transfer busbar.
QB1
QA1
IEC04000514 V1 EN-US
Figure 168: Switchyard layout ABC_BC
368
QB2 QB20 QB7
QC1
QC2
en04000514.vsd
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WA1 (A)
WA2 (B)
WA7 (C)
1MRK 511 401-UEN Rev. K
IP14144-1 v2
M13555-3 v8
Bay control REC670
Application manual