Signal189OPTR 189 is open.289OPTR 289 is open.VP189TR The switch status of 189 is valid.VP289TR The switch status of 289 is valid.EXDU_DB No transmission error from the bay that contains the above information.These signals from each bus-section disconnector bay (A1A2_DC) are also needed.For B1B2_DC, corresponding signals from busbar B are used. The same type ofmodule (A1A2_DC) is used for different busbars, that is, for both bus-sectiondisconnectors A1A2_DC and B1B2_DC.SignalDCOPTR The bus-section disconnector is open.VPDCTR The switch status of bus-section disconnector DC is valid.EXDU_DC No transmission error from the bay that contains the above information.The logic is identical to the double busbar configuration described in section “Signalsin single breaker arrangement”.12.4.7.4 Signals in breaker and a half arrangement M15053-123 v4The busbar grounding switch is only allowed to operate if all disconnectors of the bus-section are open.en04000512_ansi.vsdSection 1 Section 2A1A2_DC(BS)B1B2_DC(BS) BB_ESBB_ESBH_LINE(WA1)A1(WA2)B1 B2A2BH_LINEANSI04000512 V1 EN-USFigure 177: Busbars divided by bus-section disconnectors (circuit breakers)The project-specific logic are the same as for the logic for the double busbarconfiguration described in section “Signals in single breaker arrangement”.SignalBB_DC_OP All disconnectors on this part of the busbar are open.VP_BB_DC The switch status of all disconnectors on this part of the busbar is valid.EXDU_BB No transmission error from any bay that contains the above information.Section 12 1MRK 505 370-UUS AControl394 Busbar protection REB670 2.2 ANSIApplication manual
