12.4.6 Interlocking for bus-section disconnector A1A2_DC (3) IP14159-1 v212.4.6.1 Application M13544-3 v7The interlocking for bus-section disconnector (A1A2_DC, 3) function is used for onebus-section disconnector between section 1 and 2 according to figure 157. A1A2_DC(3) function can be used for different busbars, which includes a bus-sectiondisconnector.WA1 (A1) WA2 (A2)189G 289GA1A2_DC en04000492_ansi.vsd52ANSI04000492 V1 EN-USFigure 157: Switchyard layout A1A2_DC (3)M13542-4 v4The signals from other bays connected to the module A1A2_DC are described below.12.4.6.2 Signals in single breaker arrangement M13542-6 v5If the busbar is divided by bus-section disconnectors, the condition no otherdisconnector connected to the bus-section must be made by a project-specific logic.The same type of module (A1A2_DC) is used for different busbars, that is, for bothbus-section disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, correspondingsignals from busbar B are used.en04000493_ansi.vsdSection 1 Section 2A1A2_DC(BS)B1B2_DC(BS)ABC_LINEABC_BCABC_LINE(WA1)A1(WA2)B1(WA7)C CB3A3AB_TRAFOAB_TRAFOA2B2ANSI04000493 V1 EN-USFigure 158: Busbars divided by bus-section disconnectors (circuit breakers)To derive the signals:1MRK 505 370-UUS A Section 12ControlBusbar protection REB670 2.2 ANSI 381Application manual
