ABB REL670 2.2 IEC - Interlocking for Bus-Coupler Bay ABC_BC

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:
• QB7_OP = 1
• QB7_CL = 0
• 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
15.4.3 Interlocking for bus-coupler bay ABC_BC
IP14144-1 v2
1MRK 506 369-UEN B Section 15
Control
Line distance protection REL670 2.2 IEC 663
Application manual