Interlocking For Bus-Coupler Bay Abc_Bc; Application - ABB Relion REC670 Applications Manual

Section 13
Control
• QC71_OP = 1
• QC71_CL = 0
• 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
13.4.3

Interlocking for bus-coupler bay ABC_BC

13.4.3.1

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 115. The function can also be
used for a single busbar arrangement with transfer busbar or double busbar arrangement
without transfer busbar.
272
1MRK 511 358-UEN A
IP14144-1 v2
M13555-3 v8
Application manual