10.4.6.3 Signals in double-breaker arrangementIf the busbar is divided by bus-section disconnectors, the condition for the busbardisconnector bay no other disconnector connected to the bus-section must be made by aproject-specific logic.The same type of module (A1A2_DC) is used for different busbars, that is, for both bus-section disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, correspondingsignals from busbar B are used.en04000498_ansi.vsdSection 1 Section 2A1A2_DC(BS)B1B2_DC(BS)DB_BUS DB_BUSDB_BUS DB_BUS(WA1)A1(WA2)B1 B2A2ANSI04000498 V1 ENFigure 106: Busbars divided by bus-section disconnectors (circuit breakers)To derive the signals:SignalS1DC_OP All disconnectors on bus-section 1 are open.S2DC_OP All disconnectors on bus-section 2 are open.VPS1_DC The switch status of all disconnectors on bus-section 1 is valid.VPS2_DC The switch status of all disconnectors on bus-section 2 is valid.EXDU_BB No transmission error from double-breaker bay (DB) that contains the aboveinformation.These signals from each double-breaker bay (DB_BUS) are needed: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.Section 10 1MRK 511 286-UUS AControl242Application manual
