If the busbar is divided by bus-section circuit breakers, the signals from the bus-sectioncoupler bay (A1A2_BS), rather than the bus-section disconnector bay (A1A2_DC),must be used. For B1B2_BS, corresponding signals from busbar B are used. The sametype of module (A1A2_BS) is used for different busbars, that is, for both bus-sectioncircuit breakers A1A2_BS and B1B2_BS.SignalS1S2CLTR A bus-section coupler connection exists between bus sections 1 and 2.VPS1S2TR The switch status of bus-section coupler BS is valid.EXDU_BS No transmission error from the bay containing the above information.For a bus-coupler bay in section 1, these conditions are valid:AND BC_12_CLVP_BC_12EXDU_BCen04000485_ansi.vsdANDANDDCCLTR (A1A2)DCCLTR (B1B2)BC12CLTR (sect.2)VPDCTR (A1A2)VPDCTR (B1B2)VPBC12TR (sect.2)EXDU_DC (A1A2)EXDU_DC (B1B2)EXDU_BC (sect.2)ANSI04000485 V1 EN-USFigure 150: Signals to a bus-coupler bay in section 1 from a bus-coupler bay inanother sectionFor a bus-coupler bay in section 2, the same conditions as above are valid by changingsection 1 to section 2 and vice versa.12.4.3.5 Configuration setting M13553-107 v4If there is no bypass busbar and therefore no 289 and 789 disconnectors, then theinterlocking for 289 and 789 is not used. The states for 289, 789, 7189G are set to openby setting the appropriate module inputs as follows. In the functional block diagram, 0and 1 are designated 0=FALSE and 1=TRUE:• 289_OP = 1• 289_CL = 0• 789_OP = 1• 789_CL = 01MRK 505 370-UUS A Section 12ControlBusbar protection REB670 2.2 ANSI 373Application manual
