15.4.3.1 Application M13555-3 v8The interlocking for bus-coupler bay (ABC_BC) function is used for a bus-couplerbay connected to a double busbar arrangement according to figure 326. Thefunction can also be used for a single busbar arrangement with transfer busbar ordouble busbar arrangement without transfer busbar.QB1 QB2QC1QA1WA1 (A)WA2 (B)WA7 (C)QB7QB20QC2en04000514.vsdIEC04000514 V1 EN-USFigure 326: Switchyard layout ABC_BC15.4.3.2 Configuration M13553-138 v4The signals from the other bays connected to the bus-coupler module ABC_BC aredescribed below.15.4.3.3 Signals from all feeders M13553-6 v4To derive the signals:SignalBBTR_OP No busbar transfer is in progress concerning this bus-coupler.VP_BBTR The switch status is valid for all apparatuses involved in the busbar transfer.EXDU_12 No transmission error from any bay connected to the WA1/WA2 busbars.These signals from each line bay (ABC_LINE), each transformer bay(AB_TRAFO), and bus-coupler bay (ABC_BC), except the own bus-coupler bayare needed:SignalQQB12OPTR QB1 or QB2 or both are open.VPQB12TR The switch status of QB1 and QB2 are valid.EXDU_12 No transmission error from the bay that contains the above information.Section 15 1MRK 506 369-UEN BControl664 Line distance protection REL670 2.2 IECApplication manual
